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Sno Questions Answer Date Status Actions
1 How do you create a variable in Python? variable_name = value 2024-09-03
2 How do you print a statement in Python? print("Hello, World!") 2024-09-03
3 How do you declare a variable in Java? int myVar = 10; 2024-09-03
4 How do you write a for loop in Python? for i in range(10): print(i) 2024-09-03
5 How do you write a for loop in Java? for(int i = 0; i < 10; i++) { System.out.println(i); } 2024-09-03
6 How do you define a function in Python? def my_function(): 2024-09-03
7 How do you define a method in Java? public void myMethod() { } 2024-09-03
8 How do you handle exceptions in Python? try: # code except: # handle exception 2024-09-03
9 How do you handle exceptions in Java? try { // code } catch(Exception e) { // handle exception } 2024-09-03
10 How do you concatenate strings in Python? string1 + string2 2024-09-03
11 How do you concatenate strings in Java? String result = string1 + string2; 2024-09-03
12 How do you comment a line in Python? # This is a comment 2024-09-03
13 How do you comment a line in Java? // This is a comment 2024-09-03
14 How do you write a multi-line comment in Python? """This is a multi-line comment""" 2024-09-03
15 How do you write a multi-line comment in Java? /* This is a multi-line comment */ 2024-09-03
16 How do you import a module in Python? import module_name 2024-09-03
17 How do you import a package in Java? import package.name.ClassName; 2024-09-03
18 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-03
19 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-03
20 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-03
21 How do you create a HashMap in Java? HashMap map = new HashMap<>(); 2024-09-03
22 How do you write a conditional statement in Python? if condition: # code 2024-09-03
23 How do you write a conditional statement in Java? if (condition) { // code } 2024-09-03
24 How do you write an else-if statement in Python? elif condition: # code 2024-09-03
25 How do you write an else-if statement in Java? else if (condition) { // code } 2024-09-03
26 How do you define a class in Python? class MyClass: 2024-09-03
27 How do you define a class in Java? public class MyClass { } 2024-09-03
28 How do you create an object in Python? obj = MyClass() 2024-09-03
29 How do you create an object in Java? MyClass obj = new MyClass(); 2024-09-03
30 How do you write a while loop in Python? while condition: # code 2024-09-03
31 How do you write a while loop in Java? while (condition) { // code } 2024-09-03
32 How do you exit a loop in Python? break 2024-09-03
33 How do you exit a loop in Java? break; 2024-09-03
34 How do you continue to the next iteration of a loop in Python? continue 2024-09-03
35 Write a Hello World Program in C++ #include int main() { // Print "Hello, World!" to the console std::cout << "Hello, World!" << std::endl; return 0; } 9-8-2023
36 Write the Factorial Program in C++ Factorial Program Here 14-03-2024
37 hello world program in c++ #include int main() { std::cout << "Hello, World!" << std::endl; return 0; } 18-03-2024
38 User subtraction of a-b in c++ #include int main() { // Define variables a and b int a = 10; int b = 5; // Subtract b from a int result = a - b; // Output the result std::cout << "The result of a - b is: " << result << std::endl; return 0; } 18-03-2024
39 How do you define a constant in Python? MY_CONSTANT = 10 2024-09-03
40 How do you define a constant in Java? static final int MY_CONSTANT = 10; 2024-09-03
41 How do you find the length of a list in Python? len(my_list) 2024-09-03
42 How do you find the length of an array in Java? myArray.length; 2024-09-03
43 How do you convert a string to an integer in Python? int("123") 2024-09-03
44 How do you convert a string to an integer in Java? Integer.parseInt("123"); 2024-09-03
45 How do you reverse a string in Python? my_string[::-1] 2024-09-03
46 How do you reverse a string in Java? new StringBuilder(myString).reverse().toString(); 2024-09-03
47 How do you check if a list is empty in Python? if not my_list: 2024-09-03
48 How do you check if an array is empty in Java? if (myArray.length == 0) { } 2024-09-03
49 How do you create a tuple in Python? my_tuple = (1, 2, 3) 2024-09-03
50 How do you create an immutable list in Java? List myList = List.of("a", "b", "c"); 2024-09-03
51 How do you convert a list to a set in Python? my_set = set(my_list) 2024-09-03
52 How do you convert a list to a set in Java? Set mySet = new HashSet<>(myList); 2024-09-03
53 How do you create a function with default arguments in Python? def my_func(a, b=10): 2024-09-03
54 How do you create an overloaded method in Java? public void myMethod(int a) { } public void myMethod(String b) { } 2024-09-03
55 How do you sort a list in Python? my_list.sort() 2024-09-03
56 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-03
57 How do you convert a list to a string in Python? my_str = ",".join(my_list) 2024-09-03
58 How do you convert an array to a string in Java? String str = Arrays.toString(myArray); 2024-09-03
59 How do you remove duplicates from a list in Python? my_list = list(set(my_list)) 2024-09-03
60 How do you remove duplicates from a list in Java? List myList = new ArrayList<>(new HashSet<>(list)); 2024-09-03
61 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-03
62 How do you read a file in Java? BufferedReader reader = new BufferedReader(new FileReader("file.txt")); 2024-09-03
63 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello, World!") 2024-09-03
64 How do you write to a file in Java? BufferedWriter writer = new BufferedWriter(new FileWriter("file.txt")); writer.write("Hello, World!"); 2024-09-03
65 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-03
66 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-03
67 How do you define a class in Python? class MyClass: 2024-09-03
68 How do you define a class in Java? public class MyClass { } 2024-09-03
69 How do you inherit a class in Python? class MySubClass(MyClass): 2024-09-03
70 How do you inherit a class in Java? class MySubClass extends MyClass { } 2024-09-03
71 How do you create an object in Python? obj = MyClass() 2024-09-03
72 How do you create an object in Java? MyClass obj = new MyClass(); 2024-09-03
73 How do you check the type of a variable in Python? type(var) 2024-09-03
74 How do you check the type of a variable in Java? var.getClass().getName(); 2024-09-03
75 How do you generate random numbers in Python? import random; random_number = random.randint(1, 10) 2024-09-03
76 How do you generate random numbers in Java? import java.util.Random; Random rand = new Random(); int random_number = rand.nextInt(10); 2024-09-03
77 How do you reverse a list in Python? my_list.reverse() 2024-09-03
78 How do you reverse an array in Java? Collections.reverse(Arrays.asList(myArray)); 2024-09-03
79 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-03
80 How do you create a HashMap in Java? HashMap map = new HashMap<>(); 2024-09-03
81 How do you convert a string to uppercase in Python? my_str.upper() 2024-09-03
82 How do you convert a string to uppercase in Java? myStr.toUpperCase(); 2024-09-03
83 How do you check if a string contains a substring in Python? "substring" in my_str 2024-09-03
84 How do you check if a string contains a substring in Java? myStr.contains("substring"); 2024-09-03
85 How do you split a string in Python? my_str.split(",") 2024-09-03
86 How do you split a string in Java? myStr.split(","); 2024-09-03
87 How do you concatenate strings in Python? full_str = str1 + str2 2024-09-03
88 How do you concatenate strings in Java? String fullStr = str1 + str2; 2024-09-03
89 How do you format a string in Python? formatted_str = f"Hello, {name}" 2024-09-03
90 How do you format a string in Java? String formattedStr = String.format("Hello, %s", name); 2024-09-03
91 How do you check if a number is even in Python? if num % 2 == 0: 2024-09-03
92 How do you check if a number is even in Java? if (num % 2 == 0) { } 2024-09-03
93 How do you define a lambda function in Python? lambda x: x + 2 2024-09-03
94 How do you define a lambda expression in Java? x -> x + 2 2024-09-03
95 How do you filter a list in Python? filtered_list = list(filter(lambda x: x > 10, my_list)) 2024-09-03
96 How do you filter a list in Java? List filteredList = myList.stream().filter(x -> x > 10).collect(Collectors.toList()); 2024-09-03
97 How do you map a function over a list in Python? mapped_list = list(map(lambda x: x * 2, my_list)) 2024-09-03
98 How do you map a function over a list in Java? List mappedList = myList.stream().map(x -> x * 2).collect(Collectors.toList()); 2024-09-03
99 How do you sum elements of a list in Python? total = sum(my_list) 2024-09-03
100 How do you sum elements of a list in Java? int sum = myList.stream().mapToInt(Integer::intValue).sum(); 2024-09-03
101 How do you check if a list contains an element in Python? if "element" in my_list: 2024-09-03
102 How do you check if a list contains an element in Java? if (myList.contains("element")) { } 2024-09-03
103 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-03
104 How do you find the maximum value in a list in Java? int max = Collections.max(myList); 2024-09-03
105 How do you find the minimum value in a list in Python? min_value = min(my_list) 2024-09-03
106 How do you find the minimum value in a list in Java? int min = Collections.min(myList); 2024-09-03
107 How do you create a list of numbers in Python? my_list = list(range(1, 11)) 2024-09-03
108 How do you create a list of numbers in Java? List myList = IntStream.range(1, 11).boxed().collect(Collectors.toList()); 2024-09-03
109 How do you shuffle a list in Python? import random; random.shuffle(my_list) 2024-09-03
110 How do you shuffle a list in Java? Collections.shuffle(myList); 2024-09-03
111 How do you create a set in Python? my_set = {1, 2, 3} 2024-09-03
112 How do you create a set in Java? Set mySet = new HashSet<>(); 2024-09-03
113 How do you create a list comprehension in Python? [x * 2 for x in my_list] 2024-09-03
114 How do you implement a for-each loop in Java? for (int num : myList) { } 2024-09-03
115 How do you create a function in Python? def my_function(): 2024-09-03
116 How do you create a function in JavaScript? function myFunction() { } 2024-09-03
117 How do you create a function in Java? public void myFunction() { } 2024-09-03
118 How do you return a value from a function in Python? return value 2024-09-03
119 How do you return a value from a function in JavaScript? return value; 2024-09-03
120 How do you return a value from a function in Java? return value; 2024-09-03
121 How do you create a variable in Python? variable_name = value 2024-09-03
122 How do you create a variable in JavaScript? let variableName = value; 2024-09-03
123 How do you create a variable in Java? int myVariable = value; 2024-09-03
124 How do you declare a constant in Python? MY_CONSTANT = value 2024-09-03
125 How do you declare a constant in JavaScript? const MY_CONSTANT = value; 2024-09-03
126 How do you declare a constant in Java? static final int MY_CONSTANT = value; 2024-09-03
127 How do you create an array in Python? my_array = [1, 2, 3] 2024-09-03
128 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-03
129 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-03
130 How do you iterate over a list in Python? for item in my_list: print(item) 2024-09-03
131 How do you iterate over an array in JavaScript? for(let i = 0; i < myArray.length; i++) { console.log(myArray[i]); } 2024-09-03
132 How do you iterate over an array in Java? for(int i = 0; i < myArray.length; i++) { System.out.println(myArray[i]); } 2024-09-03
133 How do you sort a list in Python? my_list.sort() 2024-09-03
134 How do you sort an array in JavaScript? myArray.sort(); 2024-09-03
135 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-03
136 How do you find the length of a list in Python? len(my_list) 2024-09-03
137 How do you find the length of an array in JavaScript? myArray.length 2024-09-03
138 How do you find the length of an array in Java? myArray.length 2024-09-03
139 How do you check if a list is empty in Python? if not my_list: 2024-09-03
140 How do you check if an array is empty in JavaScript? if (myArray.length === 0) { } 2024-09-03
141 How do you check if an array is empty in Java? if (myArray.length == 0) { } 2024-09-03
142 How do you concatenate strings in Python? result = "Hello" + " " + "World" 2024-09-03
143 How do you concatenate strings in JavaScript? let result = "Hello" + " " + "World"; 2024-09-03
144 How do you concatenate strings in Java? String result = "Hello" + " " + "World"; 2024-09-03
145 How do you convert a string to uppercase in Python? my_string.upper() 2024-09-03
146 How do you convert a string to uppercase in JavaScript? myString.toUpperCase(); 2024-09-03
147 How do you convert a string to uppercase in Java? myString.toUpperCase(); 2024-09-03
148 How do you convert a string to lowercase in Python? my_string.lower() 2024-09-03
149 How do you convert a string to lowercase in JavaScript? myString.toLowerCase(); 2024-09-03
150 How do you convert a string to lowercase in Java? myString.toLowerCase(); 2024-09-03
151 How do you check if a string contains a substring in Python? 'substring' in my_string 2024-09-03
152 How do you check if a string contains a substring in JavaScript? myString.includes("substring"); 2024-09-03
153 How do you check if a string contains a substring in Java? myString.contains("substring"); 2024-09-03
154 How do you replace a substring in Python? my_string.replace("old", "new") 2024-09-03
155 How do you replace a substring in JavaScript? myString.replace("old", "new"); 2024-09-03
156 How do you replace a substring in Java? myString.replace("old", "new"); 2024-09-03
157 How do you split a string in Python? my_string.split(" ") 2024-09-03
158 How do you split a string in JavaScript? myString.split(" "); 2024-09-03
159 How do you split a string in Java? myString.split(" "); 2024-09-03
160 How do you join a list of strings in Python? " ".join(my_list) 2024-09-03
161 How do you join an array of strings in JavaScript? myArray.join(" "); 2024-09-03
162 How do you join an array of strings in Java? String.join(" ", myArray); 2024-09-03
163 How do you convert a string to a list in Python? list(my_string) 2024-09-03
164 How do you convert a string to an array in JavaScript? myString.split(""); 2024-09-03
165 How do you convert a string to a char array in Java? myString.toCharArray(); 2024-09-03
166 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-03
167 How do you create an object in JavaScript? let myObject = {"key": "value"}; 2024-09-03
168 How do you access a value in a dictionary in Python? my_dict["key"] 2024-09-03
169 How do you create a dictionary in Python? my_dict = {"key1": "value1", "key2": "value2"} 2024-09-03
170 How do you create an object in JavaScript? let myObject = {key1: "value1", key2: "value2"}; 2024-09-03
171 How do you access a value in a Python dictionary? value = my_dict["key1"] 2024-09-03
172 How do you access a value in a JavaScript object? let value = myObject.key1; 2024-09-03
173 How do you check if a key exists in a Python dictionary? if "key1" in my_dict: 2024-09-03
174 How do you check if a key exists in a JavaScript object? if ("key1" in myObject) { } 2024-09-03
175 How do you add a new key-value pair to a Python dictionary? my_dict["new_key"] = "new_value" 2024-09-03
176 How do you add a new key-value pair to a JavaScript object? myObject.newKey = "newValue"; 2024-09-03
177 How do you delete a key-value pair from a Python dictionary? del my_dict["key1"] 2024-09-03
178 How do you delete a key-value pair from a JavaScript object? delete myObject.key1; 2024-09-03
179 How do you iterate over keys in a Python dictionary? for key in my_dict: 2024-09-03
180 How do you iterate over keys in a JavaScript object? for (let key in myObject) { } 2024-09-03
181 How do you create a set in Python? my_set = {1, 2, 3} 2024-09-03
182 How do you check if an element exists in a Python set? if 1 in my_set: 2024-09-03
183 How do you find the length of a Python set? len(my_set) 2024-09-03
184 How do you add an element to a Python set? my_set.add(4) 2024-09-03
185 How do you remove an element from a Python set? my_set.remove(3) 2024-09-03
186 How do you create a tuple in Python? my_tuple = (1, 2, 3) 2024-09-03
187 How do you access an element in a Python tuple? element = my_tuple[0] 2024-09-03
188 How do you iterate over elements in a Python tuple? for element in my_tuple: 2024-09-03
189 How do you convert a list to a tuple in Python? my_tuple = tuple(my_list) 2024-09-03
190 How do you convert a tuple to a list in Python? my_list = list(my_tuple) 2024-09-03
191 How do you create a function with default parameters in Python? def my_function(a, b=10): 2024-09-03
192 How do you create a function with default parameters in JavaScript? function myFunction(a, b = 10) { } 2024-09-03
193 How do you define an anonymous function in Python? lambda x: x + 1 2024-09-03
194 How do you define an anonymous function in JavaScript? let myFunction = function(x) { return x + 1; }; 2024-09-03
195 How do you create a class in Python? class MyClass: 2024-09-03
196 How do you create a class in JavaScript? class MyClass { constructor() { } } 2024-09-03
197 How do you create a class in Java? public class MyClass { } 2024-09-03
198 How do you create an instance of a class in Python? my_instance = MyClass() 2024-09-03
199 How do you create an instance of a class in JavaScript? let myInstance = new MyClass(); 2024-09-03
200 How do you create an instance of a class in Java? MyClass myInstance = new MyClass(); 2024-09-03
201 How do you define a method in a Python class? def my_method(self): 2024-09-03
202 How do you define a method in a JavaScript class? class MyClass { myMethod() { } } 2024-09-03
203 How do you define a method in a Java class? public void myMethod() { } 2024-09-03
204 How do you create an abstract class in Python? from abc import ABC; class MyAbstractClass(ABC): 2024-09-03
205 How do you create an abstract class in JavaScript? class MyAbstractClass { constructor() { if (new.target === MyAbstractClass) throw new Error("Cannot instantiate an abstract class"); } } 2024-09-03
206 How do you create an abstract class in Java? public abstract class MyAbstractClass { } 2024-09-03
207 How do you create an interface in Python? class MyInterface: def method1(self): pass 2024-09-03
208 How do you create an interface in JavaScript? class MyInterface { method1() { throw new Error("Method not implemented"); } } 2024-09-03
209 How do you create an interface in Java? public interface MyInterface { void method1(); } 2024-09-03
210 How do you implement an interface in Python? class MyClass(MyInterface): def method1(self): 2024-09-03
211 How do you implement an interface in JavaScript? class MyClass extends MyInterface { method1() { } } 2024-09-03
212 How do you implement an interface in Java? public class MyClass implements MyInterface { public void method1() { } } 2024-09-03
213 How do you handle exceptions in Python? try: pass except Exception as e: print(e) 2024-09-03
214 How do you handle exceptions in JavaScript? try { } catch (e) { console.error(e); } 2024-09-03
215 How do you handle exceptions in Java? try { } catch (Exception e) { e.printStackTrace(); } 2024-09-03
216 How do you define a constructor in Python? class MyClass: def __init__(self): pass 2024-09-03
217 How do you define a constructor in JavaScript? class MyClass { constructor() { } } 2024-09-03
218 How do you define a constructor in Java? public MyClass() { } 2024-09-03
219 How do you inherit a class in Python? class ChildClass(ParentClass): 2024-09-03
220 How do you inherit a class in JavaScript? class ChildClass extends ParentClass { } 2024-09-03
221 How do you inherit a class in Java? public class ChildClass extends ParentClass { } 2024-09-03
222 How do you call a parent class method in Python? super().parent_method() 2024-09-03
223 How do you call a parent class method in JavaScript? super.parentMethod(); 2024-09-03
224 How do you call a parent class method in Java? super.parentMethod(); 2024-09-03
225 How do you override a method in Python? def method_name(self): 2024-09-03
226 How do you override a method in JavaScript? class ChildClass extends ParentClass { methodName() { } } 2024-09-03
227 How do you override a method in Java? @Override public void methodName() { } 2024-09-03
228 How do you implement multiple inheritance in Python? class ChildClass(ParentClass1, ParentClass2): 2024-09-03
229 How do you implement multiple inheritance in JavaScript? JavaScript does not support multiple inheritance directly, but mixins can be used. 2024-09-03
230 How do you implement multiple inheritance in Java? Java does not support multiple inheritance directly, but interfaces can be used. 2024-09-03
231 How do you create a constructor in Python? class MyClass: def __init__(self, param1): 2024-09-03
232 How do you create a constructor in JavaScript? class MyClass { constructor(param1) { } } 2024-09-03
233 How do you create a constructor in Java? public MyClass(String param1) { } 2024-09-03
234 How do you define a private method in Python? def __my_private_method(self): 2024-09-03
235 How do you define a private method in JavaScript? class MyClass { #myPrivateMethod() { } } 2024-09-03
236 How do you define a private method in Java? private void myPrivateMethod() { } 2024-09-03
237 How do you define a static method in Python? @staticmethod def my_static_method(): 2024-09-03
238 How do you define a static method in JavaScript? class MyClass { static myStaticMethod() { } } 2024-09-03
239 How do you define a static method in Java? public static void myStaticMethod() { } 2024-09-03
240 How do you define a class method in Python? @classmethod def my_class_method(cls): 2024-09-03
241 How do you define a class method in JavaScript? JavaScript does not distinguish between class methods and instance methods explicitly, but static methods are similar. 2024-09-03
242 How do you define a class method in Java? public static void myClassMethod() { } 2024-09-03
243 How do you use the map function in Python? map(lambda x: x * 2, [1, 2, 3]) 2024-09-03
244 How do you use the filter function in Python? filter(lambda x: x > 1, [1, 2, 3]) 2024-09-03
245 How do you use the reduce function in Python? from functools import reduce; reduce(lambda x, y: x + y, [1, 2, 3]) 2024-09-03
246 How do you use the forEach function in JavaScript? [1, 2, 3].forEach(element => console.log(element)); 2024-09-03
247 How do you use the map function in JavaScript? let newArr = [1, 2, 3].map(x => x * 2); 2024-09-03
248 How do you use the filter function in JavaScript? let filteredArr = [1, 2, 3].filter(x => x > 1); 2024-09-03
249 How do you use the reduce function in JavaScript? let sum = [1, 2, 3].reduce((acc, x) => acc + x, 0); 2024-09-03
250 How do you define a list comprehension in Python? [x * 2 for x in range(5)] 2024-09-03
251 How do you define a dictionary comprehension in Python? {x: x * 2 for x in range(5)} 2024-09-03
252 How do you define a set comprehension in Python? {x * 2 for x in range(5)} 2024-09-03
253 How do you define a generator expression in Python? (x * 2 for x in range(5)) 2024-09-03
254 How do you use a lambda function in Python? lambda x: x * 2 2024-09-03
255 How do you define an arrow function in JavaScript? (x) => x * 2 2024-09-03
256 How do you define a function in JavaScript? function myFunction(x) { return x * 2; } 2024-09-03
257 How do you define a function in Java? public int myFunction(int x) { return x * 2; } 2024-09-03
258 How do you use a ternary operator in Python? x if condition else y 2024-09-03
259 How do you use a ternary operator in JavaScript? condition ? x : y 2024-09-03
260 How do you use a ternary operator in Java? condition ? x : y 2024-09-03
261 How do you define a list in Python? my_list = [1, 2, 3] 2024-09-03
262 How do you define an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-03
263 How do you define an array in Java? int[] myArray = {1, 2, 3}; 2024-09-03
264 How do you access an element in a Python list? my_list[0] 2024-09-03
265 How do you access an element in a JavaScript array? myArray[0] 2024-09-03
266 How do you access an element in a Java array? myArray[0] 2024-09-03
267 How do you add an element to a Python list? my_list.append(element) 2024-09-03
268 How do you add an element to a JavaScript array? myArray.push(element); 2024-09-03
269 How do you add an element to a Java array? Arrays in Java have a fixed size, so elements must be added to a new array. 2024-09-03
270 How do you remove an element from a Python list? my_list.remove(element) 2024-09-03
271 How do you remove an element from a JavaScript array? myArray.splice(index, 1); 2024-09-03
272 How do you remove an element from a Java array? Arrays in Java have a fixed size, so elements must be removed by creating a new array. 2024-09-03
273 How do you find the length of a Python list? len(my_list) 2024-09-03
274 How do you find the length of a JavaScript array? myArray.length; 2024-09-03
275 How do you find the length of a Java array? myArray.length; 2024-09-03
276 How do you sort a Python list? my_list.sort() 2024-09-03
277 How do you sort a JavaScript array? myArray.sort(); 2024-09-03
278 How do you sort a Java array? Arrays in Java can be sorted using Arrays.sort(myArray); 2024-09-03
279 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-03
280 How do you create an object in JavaScript? let myObject = { key: "value" }; 2024-09-03
281 How do you create a HashMap in Java? Map map = new HashMap<>(); 2024-09-03
282 How do you access a value from a Python dictionary? my_dict["key"] 2024-09-03
283 How do you access a value from a JavaScript object? myObject.key 2024-09-03
284 How do you access a value from a HashMap in Java? map.get("key") 2024-09-03
285 How do you add a key-value pair to a Python dictionary? my_dict["new_key"] = "new_value" 2024-09-03
286 How do you add a key-value pair to a JavaScript object? myObject.newKey = "newValue"; 2024-09-03
287 How do you add a key-value pair to a HashMap in Java? map.put("new_key", "new_value"); 2024-09-03
288 How do you remove a key-value pair from a Python dictionary? del my_dict["key"] 2024-09-03
289 How do you remove a key-value pair from a JavaScript object? delete myObject.key; 2024-09-03
290 How do you remove a key-value pair from a HashMap in Java? map.remove("key"); 2024-09-03
291 How do you check if a key exists in a Python dictionary? "key" in my_dict 2024-09-03
292 How do you check if a key exists in a JavaScript object? "key" in myObject 2024-09-03
293 How do you check if a key exists in a HashMap in Java? map.containsKey("key") 2024-09-03
294 How do you iterate over a Python dictionary? for key, value in my_dict.items(): 2024-09-03
295 How do you iterate over a JavaScript object? for (let key in myObject) { } 2024-09-03
296 How do you iterate over a HashMap in Java? for (Map.Entry entry : map.entrySet()) { } 2024-09-03
297 How do you read from a file in Python? with open("file.txt") as file: content = file.read() 2024-09-03
298 How do you read from a file in JavaScript? fetch("file.txt").then(response => response.text()).then(data => console.log(data)); 2024-09-03
299 How do you read from a file in Java? try (BufferedReader br = new BufferedReader(new FileReader("file.txt"))) { String line; while ((line = br.readLine()) != null) { System.out.println(line); } } 2024-09-03
300 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello") 2024-09-03
301 How do you write to a file in JavaScript? fetch("file.txt", { method: "POST", body: "Hello" }); 2024-09-03
302 How do you write to a file in Java? try (BufferedWriter bw = new BufferedWriter(new FileWriter("file.txt"))) { bw.write("Hello"); } 2024-09-03
303 How do you handle exceptions in Python? try: ... except Exception as e: ... 2024-09-03
304 How do you handle exceptions in JavaScript? try { ... } catch (e) { ... } 2024-09-03
305 How do you handle exceptions in Java? try { ... } catch (Exception e) { ... } 2024-09-03
306 How do you create a class in Python? class MyClass: def __init__(self): 2024-09-03
307 How do you create a class in JavaScript? class MyClass { constructor() { } } 2024-09-03
308 How do you create a class in Java? public class MyClass { public MyClass() { } } 2024-09-03
309 How do you inherit a class in Python? class ChildClass(MyClass): 2024-09-03
310 How do you inherit a class in JavaScript? class ChildClass extends MyClass { } 2024-09-03
311 How do you inherit a class in Java? public class ChildClass extends MyClass { } 2024-09-03
312 How do you define a method in Python? def my_method(self): 2024-09-03
313 How do you define a method in JavaScript? myMethod() { } 2024-09-03
314 How do you define a method in Java? public void myMethod() { } 2024-09-03
315 How do you call a method in Python? my_instance.my_method() 2024-09-03
316 How do you call a method in JavaScript? myInstance.myMethod(); 2024-09-03
317 How do you call a method in Java? myInstance.myMethod(); 2024-09-03
318 How do you override a method in Python? def my_method(self): 2024-09-03
319 How do you override a method in JavaScript? myMethod() { super.myMethod(); } 2024-09-03
320 How do you override a method in Java? public class SubClass extends SuperClass { @Override public void myMethod() { } } 2024-09-03
321 How do you implement an interface in Python? class MyClass(MyInterface): 2024-09-03
322 How do you implement an interface in JavaScript? class MyClass implements MyInterface { } 2024-09-03
323 How do you implement an interface in Java? public class MyClass implements MyInterface { } 2024-09-03
324 How do you create a thread in Python? import threading; thread = threading.Thread(target=my_function); thread.start() 2024-09-03
325 How do you create a thread in JavaScript? new Worker("myWorker.js"); 2024-09-03
326 How do you create a thread in Java? new Thread(new Runnable() { public void run() { } }).start(); 2024-09-03
327 How do you synchronize a method in Python? @synchronized def my_method(self): 2024-09-03
328 How do you synchronize a method in JavaScript? use a mutex or lock in a worker script 2024-09-03
329 How do you synchronize a method in Java? synchronized public void myMethod() { } 2024-09-03
330 How do you connect to a database in Python? import sqlite3; conn = sqlite3.connect("mydatabase.db") 2024-09-03
331 How do you connect to a database in JavaScript? use a Node.js library like mysql or pg 2024-09-03
332 How do you connect to a database in Java? Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/mydatabase", "user", "password"); 2024-09-03
333 How do you execute a query in Python? cursor.execute("SELECT * FROM my_table") 2024-09-03
334 How do you execute a query in JavaScript? db.query("SELECT * FROM my_table", function(err, results) { }) 2024-09-03
335 How do you execute a query in Java? Statement stmt = conn.createStatement(); ResultSet rs = stmt.executeQuery("SELECT * FROM my_table"); 2024-09-03
336 How do you handle SQL injections in Python? use parameterized queries 2024-09-03
337 How do you handle SQL injections in JavaScript? use parameterized queries or prepared statements 2024-09-03
338 How do you handle SQL injections in Java? use PreparedStatement 2024-09-03
339 How do you create a REST API in Python? from flask import Flask; app = Flask(__name__); @app.route("/endpoint", methods=["GET"]) def my_endpoint(): return "Hello" 2024-09-03
340 How do you create a REST API in JavaScript? const express = require("express"); const app = express(); app.get("/endpoint", (req, res) => res.send("Hello")); 2024-09-03
341 How do you create a REST API in Java? import javax.ws.rs.*; @Path("/endpoint") public class MyResource { @GET public String get() { return "Hello"; } } 2024-09-03
342 How do you handle authentication in Python? use libraries like Flask-Login or Django authentication 2024-09-03
343 How do you handle authentication in JavaScript? use libraries like Passport.js for Node.js 2024-09-03
344 How do you handle authentication in Java? use frameworks like Spring Security 2024-09-03
345 How do you handle user input validation in Python? use libraries like WTForms or Django forms 2024-09-03
346 How do you handle user input validation in JavaScript? use libraries like validator.js or built-in HTML5 validation 2024-09-03
347 How do you handle user input validation in Java? use libraries like Apache Commons Validator or built-in validation 2024-09-03
348 How do you deploy a Python application? use a web server like Gunicorn with a WSGI server like uWSGI 2024-09-03
349 How do you deploy a JavaScript application? use a platform like Vercel or Netlify for front-end apps, or deploy to a server for Node.js apps 2024-09-03
350 How do you deploy a Java application? use a server with a Java application server like Tomcat or Spring Boot 2024-09-03
351 How do you create a function in Python? def my_function(): 2024-09-03
352 How do you create a function in JavaScript? function myFunction() { } 2024-09-03
353 How do you create a function in Java? public void myFunction() { } 2024-09-03
354 How do you handle exceptions in Python? try: ... except Exception as e: ... 2024-09-03
355 How do you handle exceptions in JavaScript? try { ... } catch (e) { ... } 2024-09-03
356 How do you handle exceptions in Java? try { ... } catch (Exception e) { ... } 2024-09-03
357 How do you use a list in Python? my_list = [1, 2, 3] 2024-09-03
358 How do you use an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-03
359 How do you use an array in Java? int[] myArray = {1, 2, 3}; 2024-09-03
360 How do you create a class in Python? class MyClass: 2024-09-03
361 How do you create a class in JavaScript? class MyClass { } 2024-09-03
362 How do you create a class in Java? public class MyClass { } 2024-09-03
363 How do you add a method to a class in Python? class MyClass: def my_method(self): 2024-09-03
364 How do you add a method to a class in JavaScript? class MyClass { myMethod() { } } 2024-09-03
365 How do you add a method to a class in Java? public class MyClass { public void myMethod() { } } 2024-09-03
366 How do you create a constructor in Python? class MyClass: def __init__(self): 2024-09-03
367 How do you create a constructor in JavaScript? class MyClass { constructor() { } } 2024-09-03
368 How do you create a constructor in Java? public class MyClass { public MyClass() { } } 2024-09-03
369 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-03
370 How do you create an object in JavaScript? let myObject = { key: "value" }; 2024-09-03
371 How do you create a HashMap in Java? Map myMap = new HashMap<>(); 2024-09-03
372 How do you iterate over a list in Python? for item in my_list: 2024-09-03
373 How do you iterate over an array in JavaScript? myArray.forEach(item => { }); 2024-09-03
374 How do you iterate over an array in Java? for (int item : myArray) { } 2024-09-03
375 How do you create a file in Python? with open("myfile.txt", "w") as file: 2024-09-03
376 How do you create a file in JavaScript? const fs = require("fs"); fs.writeFileSync("myfile.txt", "Hello"); 2024-09-03
377 How do you create a file in Java? FileWriter writer = new FileWriter("myfile.txt"); writer.write("Hello"); writer.close(); 2024-09-03
378 How do you read a file in Python? with open("myfile.txt", "r") as file: content = file.read() 2024-09-03
379 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile("myfile.txt", "utf8", (err, data) => { }); 2024-09-03
380 How do you read a file in Java? BufferedReader reader = new BufferedReader(new FileReader("myfile.txt")); String line = reader.readLine(); reader.close(); 2024-09-03
381 How do you connect to a database in Python? import sqlite3; conn = sqlite3.connect("mydatabase.db") 2024-09-03
382 How do you connect to a database in JavaScript? const { Client } = require("pg"); const client = new Client(); 2024-09-03
383 How do you connect to a database in Java? Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/mydb", "user", "password"); 2024-09-03
384 How do you use environment variables in Python? import os; api_key = os.getenv("API_KEY") 2024-09-03
385 How do you use environment variables in JavaScript? const apiKey = process.env.API_KEY; 2024-09-03
386 How do you use environment variables in Java? String apiKey = System.getenv("API_KEY"); 2024-09-03
387 How do you sort a list in Python? my_list.sort() 2024-09-03
388 How do you sort an array in JavaScript? myArray.sort() 2024-09-03
389 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-03
390 How do you handle user input in Python? input("Enter something: ") 2024-09-03
391 How do you handle user input in JavaScript? const input = prompt("Enter something:"); 2024-09-03
392 How do you handle user input in Java? Scanner scanner = new Scanner(System.in); String input = scanner.nextLine(); 2024-09-03
393 How do you use regular expressions in Python? import re; pattern = re.compile(r"\d+") 2024-09-03
394 How do you use regular expressions in JavaScript? const pattern = /\d+/; 2024-09-03
395 How do you use regular expressions in Java? Pattern pattern = Pattern.compile("\d+"); 2024-09-03
396 How do you create a user interface in Python? use Tkinter library 2024-09-03
397 How do you create a user interface in JavaScript? use HTML and CSS with JavaScript 2024-09-03
398 How do you create a user interface in Java? use Swing or JavaFX 2024-09-03
399 How do you debug a Python application? use pdb or IDE debugging tools 2024-09-03
400 How do you debug a JavaScript application? use browser developer tools 2024-09-03
401 How do you debug a Java application? use a debugger like JDB or IDE debugging tools 2024-09-03
402 How do you perform unit testing in Python? use unittest or pytest 2024-09-03
403 How do you perform unit testing in JavaScript? use Jest or Mocha 2024-09-03
404 How do you perform unit testing in Java? use JUnit 2024-09-03
405 How do you handle multi-threading in Python? use the threading module 2024-09-03
406 How do you handle multi-threading in JavaScript? use Web Workers 2024-09-03
407 How do you handle multi-threading in Java? use the java.util.concurrent package 2024-09-03
408 How do you create a GUI in Python? use Tkinter or PyQt 2024-09-03
409 How do you create a GUI in JavaScript? use HTML/CSS for layout and JavaScript for functionality 2024-09-03
410 How do you create a GUI in Java? use Swing or JavaFX 2024-09-03
411 How do you perform file operations in Python? use the open function and file methods 2024-09-03
412 How do you perform file operations in JavaScript? use the fs module in Node.js 2024-09-03
413 How do you perform file operations in Java? use the java.io package 2024-09-03
414 How do you perform network operations in Python? use the requests library 2024-09-03
415 How do you perform network operations in JavaScript? use the fetch API 2024-09-03
416 How do you perform network operations in Java? use the java.net package 2024-09-03
417 How do you implement a stack in Python? class Stack: def __init__(self): self.items = [] def push(self, item): self.items.append(item) def pop(self): return self.items.pop() 2024-09-03
418 How do you implement a stack in JavaScript? class Stack { constructor() { this.items = []; } push(item) { this.items.push(item); } pop() { return this.items.pop(); } } 2024-09-03
419 How do you implement a stack in Java? public class Stack { private LinkedList list = new LinkedList<>(); public void push(int item) { list.addLast(item); } public int pop() { return list.removeLast(); } } 2024-09-03
420 How do you implement a queue in Python? class Queue: def __init__(self): self.items = [] def enqueue(self, item): self.items.insert(0, item) def dequeue(self): return self.items.pop() 2024-09-03
421 How do you implement a queue in JavaScript? class Queue { constructor() { this.items = []; } enqueue(item) { this.items.unshift(item); } dequeue() { return this.items.pop(); } } 2024-09-03
422 How do you implement a queue in Java? public class Queue { private LinkedList list = new LinkedList<>(); public void enqueue(int item) { list.addLast(item); } public int dequeue() { return list.removeFirst(); } } 2024-09-03
423 How do you implement a binary tree in Python? class TreeNode: def __init__(self, value): self.value = value self.left = None self.right = None 2024-09-03
424 How do you implement a binary tree in JavaScript? class TreeNode { constructor(value) { this.value = value; this.left = null; this.right = null; } } 2024-09-03
425 How do you implement a binary tree in Java? public class TreeNode { int value; TreeNode left, right; public TreeNode(int item) { value = item; left = right = null; } } 2024-09-03
426 How do you create a REST API in Python? from flask import Flask, jsonify; app = Flask(__name__); @app.route("/api") def api(): return jsonify({"message": "Hello"}) 2024-09-03
427 How do you create a REST API in JavaScript? const express = require("express"); const app = express(); app.get("/api", (req, res) => res.json({ message: "Hello" })); 2024-09-03
428 How do you create a REST API in Java? import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/api") public class MyController { @GetMapping public ResponseEntity> getApi() { Map response = new HashMap<>(); response.put("message", "Hello"); return ResponseEntity.ok(response); } } 2024-09-03
429 How do you perform HTTP requests in Python? import requests; response = requests.get("http://example.com") 2024-09-03
430 How do you perform HTTP requests in JavaScript? fetch("http://example.com").then(response => response.json()).then(data => console.log(data)); 2024-09-03
431 How do you perform HTTP requests in Java? HttpURLConnection connection = (HttpURLConnection) new URL("http://example.com").openConnection(); connection.setRequestMethod("GET"); BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream())); String line; while ((line = reader.readLine()) != null) { System.out.println(line); } 2024-09-03
432 How do you implement a sorting algorithm in Python? def bubble_sort(arr): for i in range(len(arr)): for j in range(0, len(arr)-i-1): if arr[j] > arr[j+1]: arr[j], arr[j+1] = arr[j+1], arr[j] 2024-09-03
433 How do you implement a sorting algorithm in JavaScript? function bubbleSort(arr) { for (let i = 0; i < arr.length; i++) { for (let j = 0; j < arr.length - i - 1; j++) { if (arr[j] > arr[j + 1]) { [arr[j], arr[j + 1]] = [arr[j + 1], arr[j]]; } } } } 2024-09-03
434 How do you implement a sorting algorithm in Java? public static void bubbleSort(int[] arr) { for (int i = 0; i < arr.length; i++) { for (int j = 0; j < arr.length - i - 1; j++) { if (arr[j] > arr[j + 1]) { int temp = arr[j]; arr[j] = arr[j + 1]; arr[j + 1] = temp; } } } } 2024-09-03
435 How do you implement a binary search algorithm in Python? def binary_search(arr, target): left, right = 0, len(arr) - 1 while left <= right: mid = (left + right) // 2 if arr[mid] == target: return mid elif arr[mid] < target: left = mid + 1 else: right = mid - 1 return -1 2024-09-03
436 How do you implement a binary search algorithm in JavaScript? function binarySearch(arr, target) { let left = 0, right = arr.length - 1; while (left <= right) { const mid = Math.floor((left + right) / 2); if (arr[mid] === target) return mid; if (arr[mid] < target) left = mid + 1; else right = mid - 1; } return -1; } 2024-09-03
437 How do you implement a binary search algorithm in Java? public static int binarySearch(int[] arr, int target) { int left = 0, right = arr.length - 1; while (left <= right) { int mid = (left + right) / 2; if (arr[mid] == target) return mid; if (arr[mid] < target) left = mid + 1; else right = mid - 1; } return -1; } 2024-09-03
438 How do you create a linked list in Python? class Node: def __init__(self, value): self.value = value self.next = None class LinkedList: def __init__(self): self.head = None def append(self, value): if not self.head: self.head = Node(value) else: current = self.head while current.next: current = current.next current.next = Node(value) 2024-09-03
439 How do you create a linked list in JavaScript? class Node { constructor(value) { this.value = value; this.next = null; } } class LinkedList { constructor() { this.head = null; } append(value) { if (!this.head) { this.head = new Node(value); } else { let current = this.head; while (current.next) { current = current.next; } current.next = new Node(value); } } } 2024-09-03
440 How do you create a linked list in Java? public class Node { int value; Node next; public Node(int value) { this.value = value; this.next = null; } } public class LinkedList { private Node head; public LinkedList() { this.head = null; } public void append(int value) { if (head == null) { head = new Node(value); } else { Node current = head; while (current.next != null) { current = current.next; } current.next = new Node(value); } } } 2024-09-03
441 How do you implement a hash map in Python? class HashMap: def __init__(self): self.size = 100 self.map = [None] * self.size def _hash(self, key): return hash(key) % self.size def set(self, key, value): index = self._hash(key) if self.map[index] is None: self.map[index] = [] self.map[index].append((key, value)) def get(self, key): index = self._hash(key) if self.map[index] is None: return None for k, v in self.map[index]: if k == key: return v return None 2024-09-03
442 How do you implement a hash map in JavaScript? class HashMap { constructor(size = 100) { this.size = size; this.map = new Array(size); } _hash(key) { let hash = 0; for (let i = 0; i < key.length; i++) { hash = (hash + key.charCodeAt(i) * i) % this.size; } return hash; } set(key, value) { const index = this._hash(key); if (!this.map[index]) { this.map[index] = []; } this.map[index].push([key, value]); } get(key) { const index = this._hash(key); if (!this.map[index]) return undefined; for (const [k, v] of this.map[index]) { if (k === key) return v; } return undefined; } } 2024-09-03
443 How do you implement a hash map in Java? import java.util.LinkedList; public class HashMap { private LinkedList[] map; private int size; public HashMap(int size) { this.size = size; this.map = new LinkedList[size]; } private int hash(String key) { return key.hashCode() % size; } public void put(String key, String value) { int index = hash(key); if (map[index] == null) { map[index] = new LinkedList<>(); } for (Entry entry : map[index]) { if (entry.key.equals(key)) { entry.value = value; return; } } map[index].add(new Entry(key, value)); } public String get(String key) { int index = hash(key); if (map[index] == null) return null; for (Entry entry : map[index]) { if (entry.key.equals(key)) return entry.value; } return null; } private class Entry { String key; String value; Entry(String key, String value) { this.key = key; this.value = value; } } } 2024-09-03
444 How do you implement a queue with two stacks in Python? class Queue: def __init__(self): self.stack1 = [] self.stack2 = [] def enqueue(self, item): self.stack1.append(item) def dequeue(self): if not self.stack2: while self.stack1: self.stack2.append(self.stack1.pop()) if not self.stack2: raise IndexError("Dequeue from an empty queue") return self.stack2.pop() 2024-09-03
445 How do you implement a queue with two stacks in JavaScript? class Queue { constructor() { this.stack1 = []; this.stack2 = []; } enqueue(item) { this.stack1.push(item); } dequeue() { if (this.stack2.length === 0) { while (this.stack1.length > 0) { this.stack2.push(this.stack1.pop()); } } if (this.stack2.length === 0) throw new Error("Queue is empty"); return this.stack2.pop(); } } 2024-09-03
446 How do you implement a queue with two stacks in Java? import java.util.Stack; public class QueueWithStacks { private Stack stack1 = new Stack<>(); private Stack stack2 = new Stack<>(); public void enqueue(int item) { stack1.push(item); } public int dequeue() { if (stack2.isEmpty()) { while (!stack1.isEmpty()) { stack2.push(stack1.pop()); } } if (stack2.isEmpty()) throw new IllegalStateException("Queue is empty"); return stack2.pop(); } } 2024-09-03
447 How do you implement a stack in Python? class Stack: def __init__(self): self.stack = [] def push(self, item): self.stack.append(item) def pop(self): if not self.stack: raise IndexError("Pop from an empty stack") return self.stack.pop() def peek(self): if not self.stack: raise IndexError("Peek from an empty stack") return self.stack[-1] def is_empty(self): return len(self.stack) == 0 2024-09-03
448 How do you implement a stack in JavaScript? class Stack { constructor() { this.stack = []; } push(item) { this.stack.push(item); } pop() { if (this.isEmpty()) throw new Error("Stack is empty"); return this.stack.pop(); } peek() { if (this.isEmpty()) throw new Error("Stack is empty"); return this.stack[this.stack.length - 1]; } isEmpty() { return this.stack.length === 0; } } 2024-09-03
449 How do you implement a stack in Java? import java.util.ArrayList; public class Stack { private ArrayList stack = new ArrayList<>(); public void push(T item) { stack.add(item); } public T pop() { if (isEmpty()) throw new IllegalStateException("Stack is empty"); return stack.remove(stack.size() - 1); } public T peek() { if (isEmpty()) throw new IllegalStateException("Stack is empty"); return stack.get(stack.size() - 1); } public boolean isEmpty() { return stack.isEmpty(); } } 2024-09-03
450 How do you write a function to reverse a string in Python? def reverse_string(s): return s[::-1] 2024-09-03
451 How do you write a function to reverse a string in JavaScript? function reverseString(s) { return s.split("").reverse().join(""); } 2024-09-03
452 How do you write a function to reverse a string in Java? public class StringUtil { public static String reverseString(String s) { StringBuilder sb = new StringBuilder(s); return sb.reverse().toString(); } } 2024-09-03
453 How do you check if a number is prime in Python? def is_prime(n): if n <= 1: return False for i in range(2, int(n**0.5) + 1): if n % i == 0: return False return True 2024-09-03
454 How do you check if a number is prime in JavaScript? function isPrime(n) { if (n <= 1) return false; for (let i = 2; i <= Math.sqrt(n); i++) { if (n % i === 0) return false; } return true; } 2024-09-03
455 How do you check if a number is prime in Java? public class PrimeUtil { public static boolean isPrime(int n) { if (n <= 1) return false; for (int i = 2; i <= Math.sqrt(n); i++) { if (n % i == 0) return false; } return true; } } 2024-09-03
456 How do you sort an array in Python? def sort_array(arr): return sorted(arr) 2024-09-03
457 How do you sort an array in JavaScript? function sortArray(arr) { return arr.sort(); } 2024-09-03
458 How do you sort an array in Java? import java.util.Arrays; public class ArrayUtil { public static int[] sortArray(int[] arr) { Arrays.sort(arr); return arr; } } 2024-09-03
459 How do you find the maximum value in an array in Python? def max_value(arr): return max(arr) 2024-09-03
460 How do you find the maximum value in an array in JavaScript? function maxValue(arr) { return Math.max(...arr); } 2024-09-03
461 How do you find the maximum value in an array in Java? public class ArrayUtil { public static int maxValue(int[] arr) { int max = arr[0]; for (int i = 1; i < arr.length; i++) { if (arr[i] > max) { max = arr[i]; } } return max; } } 2024-09-03
462 How do you reverse a list in Python? def reverse_list(lst): return lst[::-1] 2024-09-03
463 How do you reverse a list in JavaScript? function reverseList(lst) { return lst.reverse(); } 2024-09-03
464 How do you reverse a list in Java? import java.util.Collections; import java.util.List; public class ListUtil { public static void reverseList(List list) { Collections.reverse(list); } } 2024-09-03
465 How do you calculate the factorial of a number in Python? def factorial(n): if n == 0: return 1 return n * factorial(n - 1) 2024-09-03
466 How do you calculate the factorial of a number in JavaScript? function factorial(n) { if (n === 0) return 1; return n * factorial(n - 1); } 2024-09-03
467 How do you calculate the factorial of a number in Java? public class MathUtil { public static int factorial(int n) { if (n == 0) return 1; return n * factorial(n - 1); } } 2024-09-03
468 How do you write a function to find the nth Fibonacci number in Python? def fibonacci(n): if n <= 1: return n a, b = 0, 1 for _ in range(2, n + 1): a, b = b, a + b return b 2024-09-03
469 How do you write a function to find the nth Fibonacci number in JavaScript? function fibonacci(n) { if (n <= 1) return n; let a = 0, b = 1; for (let i = 2; i <= n; i++) { let temp = a + b; a = b; b = temp; } return b; } 2024-09-03
470 How do you write a function to find the nth Fibonacci number in Java? public class Fibonacci { public static int fibonacci(int n) { if (n <= 1) return n; int a = 0, b = 1; for (int i = 2; i <= n; i++) { int temp = a + b; a = b; b = temp; } return b; } } 2024-09-03
471 How do you check if a string is a palindrome in Python? def is_palindrome(s): return s == s[::-1] 2024-09-03
472 How do you check if a string is a palindrome in JavaScript? function isPalindrome(s) { return s === s.split("").reverse().join(""); } 2024-09-03
473 How do you check if a string is a palindrome in Java? public class Palindrome { public static boolean isPalindrome(String s) { StringBuilder sb = new StringBuilder(s); return s.equals(sb.reverse().toString()); } } 2024-09-03
474 How do you implement a depth-first search algorithm in Python? def depth_first_search(graph, start): visited = set() stack = [start] while stack: vertex = stack.pop() if vertex not in visited: visited.add(vertex) stack.extend(neighbor for neighbor in graph[vertex] if neighbor not in visited) return visited 2024-09-03
475 How do you implement a depth-first search algorithm in JavaScript? function depthFirstSearch(graph, start) { const visited = new Set(); const stack = [start]; while (stack.length) { const vertex = stack.pop(); if (!visited.has(vertex)) { visited.add(vertex); stack.push(...graph[vertex].filter(neighbor => !visited.has(neighbor))); } } return visited; } 2024-09-03
476 How do you implement a depth-first search algorithm in Java? import java.util.*; public class DepthFirstSearch { public static Set depthFirstSearch(Map> graph, int start) { Set visited = new HashSet<>(); Stack stack = new Stack<>(); stack.push(start); while (!stack.isEmpty()) { int vertex = stack.pop(); if (!visited.contains(vertex)) { visited.add(vertex); for (int neighbor : graph.get(vertex)) { if (!visited.contains(neighbor)) { stack.push(neighbor); } } } } return visited; } } 2024-09-03
477 How do you implement a breadth-first search algorithm in Python? def breadth_first_search(graph, start): visited = set() queue = [start] while queue: vertex = queue.pop(0) if vertex not in visited: visited.add(vertex) queue.extend(neighbor for neighbor in graph[vertex] if neighbor not in visited) return visited 2024-09-03
478 How do you implement a breadth-first search algorithm in JavaScript? function breadthFirstSearch(graph, start) { const visited = new Set(); const queue = [start]; while (queue.length) { const vertex = queue.shift(); if (!visited.has(vertex)) { visited.add(vertex); queue.push(...graph[vertex].filter(neighbor => !visited.has(neighbor))); } } return visited; } 2024-09-03
479 How do you implement a breadth-first search algorithm in Java? import java.util.*; public class BreadthFirstSearch { public static Set breadthFirstSearch(Map> graph, int start) { Set visited = new HashSet<>(); Queue queue = new LinkedList<>(); queue.add(start); while (!queue.isEmpty()) { int vertex = queue.poll(); if (!visited.contains(vertex)) { visited.add(vertex); for (int neighbor : graph.get(vertex)) { if (!visited.contains(neighbor)) { queue.add(neighbor); } } } } return visited; } } 2024-09-03
480 How do you sort an array in Python? def sort_array(arr): return sorted(arr) 2024-09-03
481 How do you sort an array in JavaScript? function sortArray(arr) { return arr.sort(); } 2024-09-03
482 How do you sort an array in Java? import java.util.Arrays; public class ArrayUtil { public static int[] sortArray(int[] arr) { Arrays.sort(arr); return arr; } } 2024-09-03
483 How do you implement binary search in Python? def binary_search(arr, target): left, right = 0, len(arr) - 1 while left <= right: mid = (left + right) // 2 if arr[mid] == target: return mid elif arr[mid] < target: left = mid + 1 else: right = mid - 1 return -1 2024-09-03
484 How do you implement binary search in JavaScript? function binarySearch(arr, target) { let left = 0, right = arr.length - 1; while (left <= right) { const mid = Math.floor((left + right) / 2); if (arr[mid] === target) return mid; if (arr[mid] < target) left = mid + 1; else right = mid - 1; } return -1; } 2024-09-03
485 How do you implement binary search in Java? public class BinarySearch { public static int binarySearch(int[] arr, int target) { int left = 0, right = arr.length - 1; while (left <= right) { int mid = (left + right) / 2; if (arr[mid] == target) return mid; if (arr[mid] < target) left = mid + 1; else right = mid - 1; } return -1; } } 2024-09-03
486 How do you find the length of a list in Python? def length_of_list(lst): return len(lst) 2024-09-03
487 How do you find the length of an array in JavaScript? function lengthOfArray(arr) { return arr.length; } 2024-09-03
488 How do you find the length of an array in Java? public class ArrayUtil { public static int lengthOfArray(int[] arr) { return arr.length; } } 2024-09-03
489 How do you create a new list in Python? def create_list(*elements): return list(elements) 2024-09-03
490 How do you create a new array in JavaScript? function createArray(...elements) { return elements; } 2024-09-03
491 How do you create a new array in Java? public class ArrayUtil { public static int[] createArray(int... elements) { return elements; } } 2024-09-03
492 How do you check if a number is even in Python? def is_even(num): return num % 2 == 0 2024-09-03
493 How do you check if a number is even in JavaScript? function isEven(num) { return num % 2 === 0; } 2024-09-03
494 How do you check if a number is even in Java? public class NumberUtil { public static boolean isEven(int num) { return num % 2 == 0; } } 2024-09-03
495 How do you get the current date and time in Python? from datetime import datetime current_datetime = datetime.now() 2024-09-03
496 How do you get the current date and time in JavaScript? const currentDateTime = new Date(); 2024-09-03
497 How do you get the current date and time in Java? import java.time.LocalDateTime; LocalDateTime currentDateTime = LocalDateTime.now(); 2024-09-03
498 How do you handle exceptions in Python? try: # code that might throw an exception except Exception as e: # code to handle the exception 2024-09-03
499 How do you handle exceptions in JavaScript? try { // code that might throw an exception } catch (e) { // code to handle the exception } 2024-09-03
500 How do you handle exceptions in Java? try { // code that might throw an exception } catch (Exception e) { // code to handle the exception } 2024-09-03
501 How do you concatenate strings in Python? def concatenate_strings(s1, s2): return s1 + s2 2024-09-03
502 How do you concatenate strings in JavaScript? function concatenateStrings(s1, s2) { return s1 + s2; } 2024-09-03
503 How do you concatenate strings in Java? public class StringUtil { public static String concatenateStrings(String s1, String s2) { return s1 + s2; } } 2024-09-03
504 How do you reverse a string in Python? def reverse_string(s): return s[::-1] 2024-09-03
505 How do you reverse a string in JavaScript? function reverseString(s) { return s.split("").reverse().join(""); } 2024-09-03
506 How do you reverse a string in Java? public class StringUtil { public static String reverseString(String s) { return new StringBuilder(s).reverse().toString(); } } 2024-09-03
507 How do you check if a string contains a substring in Python? def contains_substring(s, sub): return sub in s 2024-09-03
508 How do you check if a string contains a substring in JavaScript? function containsSubstring(s, sub) { return s.includes(sub); } 2024-09-03
509 How do you check if a string contains a substring in Java? public class StringUtil { public static boolean containsSubstring(String s, String sub) { return s.contains(sub); } } 2024-09-03
510 How do you find the maximum number in an array in Python? def find_max(arr): return max(arr) 2024-09-03
511 How do you find the maximum number in an array in JavaScript? function findMax(arr) { return Math.max(...arr); } 2024-09-03
512 How do you find the maximum number in an array in Java? public class ArrayUtil { public static int findMax(int[] arr) { int max = arr[0]; for (int num : arr) { if (num > max) { max = num; } } return max; } } 2024-09-03
513 How do you find the minimum number in an array in Python? def find_min(arr): return min(arr) 2024-09-03
514 How do you find the minimum number in an array in JavaScript? function findMin(arr) { return Math.min(...arr); } 2024-09-03
515 How do you find the minimum number in an array in Java? public class ArrayUtil { public static int findMin(int[] arr) { int min = arr[0]; for (int num : arr) { if (num < min) { min = num; } } return min; } } 2024-09-03
516 How do you calculate the factorial of a number in Python? def factorial(n): if n == 0: return 1 return n * factorial(n - 1) 2024-09-03
517 How do you calculate the factorial of a number in JavaScript? function factorial(n) { if (n === 0) return 1; return n * factorial(n - 1); } 2024-09-03
518 How do you calculate the factorial of a number in Java? public class MathUtil { public static int factorial(int n) { if (n == 0) return 1; return n * factorial(n - 1); } } 2024-09-03
519 How do you merge two lists in Python? def merge_lists(lst1, lst2): return lst1 + lst2 2024-09-03
520 How do you merge two arrays in JavaScript? function mergeArrays(arr1, arr2) { return arr1.concat(arr2); } 2024-09-03
521 How do you merge two arrays in Java? import java.util.ArrayList; import java.util.Arrays; public class ArrayUtil { public static int[] mergeArrays(int[] arr1, int[] arr2) { int[] merged = new int[arr1.length + arr2.length]; System.arraycopy(arr1, 0, merged, 0, arr1.length); System.arraycopy(arr2, 0, merged, arr1.length, arr2.length); return merged; } } 2024-09-03
522 How do you remove duplicates from a list in Python? def remove_duplicates(lst): return list(set(lst)) 2024-09-03
523 How do you remove duplicates from an array in JavaScript? function removeDuplicates(arr) { return [...new Set(arr)]; } 2024-09-03
524 How do you remove duplicates from an array in Java? import java.util.HashSet; import java.util.Set; import java.util.Arrays; public class ArrayUtil { public static int[] removeDuplicates(int[] arr) { Set set = new HashSet<>(); for (int num : arr) { set.add(num); } return set.stream().mapToInt(Integer::intValue).toArray(); } } 2024-09-03
525 How do you check if a list is empty in Python? def is_empty(lst): return len(lst) == 0 2024-09-03
526 How do you check if an array is empty in JavaScript? function isEmpty(arr) { return arr.length === 0; } 2024-09-03
527 How do you check if an array is empty in Java? public class ArrayUtil { public static boolean isEmpty(int[] arr) { return arr.length == 0; } } 2024-09-03
528 How do you find the index of an element in Python? def find_index(lst, element): return lst.index(element) 2024-09-03
529 How do you find the index of an element in JavaScript? function findIndex(arr, element) { return arr.indexOf(element); } 2024-09-03
530 How do you find the index of an element in Java? public class ArrayUtil { public static int findIndex(int[] arr, int element) { for (int i = 0; i < arr.length; i++) { if (arr[i] == element) return i; } return -1; } } 2024-09-03
531 How do you check if a number is prime in Python? def is_prime(num): if num <= 1: return False for i in range(2, int(num**0.5) + 1): if num % i == 0: return False return True 2024-09-03
532 How do you check if a number is prime in JavaScript? function isPrime(num) { if (num <= 1) return false; for (let i = 2; i <= Math.sqrt(num); i++) { if (num % i === 0) return false; } return true; } 2024-09-03
533 How do you check if a number is prime in Java? public class NumberUtil { public static boolean isPrime(int num) { if (num <= 1) return false; for (int i = 2; i <= Math.sqrt(num); i++) { if (num % i == 0) return false; } return true; } } 2024-09-03
534 How do you create a dictionary in Python? def create_dict(keys, values): return dict(zip(keys, values)) 2024-09-03
535 How do you create an object in JavaScript? const obj = { key1: "value1", key2: "value2" }; 2024-09-03
536 How do you create a map in Java? import java.util.HashMap; import java.util.Map; public class MapUtil { public static Map createMap() { Map map = new HashMap<>(); map.put("key1", "value1"); map.put("key2", "value2"); return map; } } 2024-09-03
537 How do you access a value in a dictionary in Python? def get_value(dct, key): return dct.get(key) 2024-09-03
538 How do you access a value in an object in JavaScript? function getValue(obj, key) { return obj[key]; } 2024-09-03
539 How do you access a value in a map in Java? import java.util.Map; public class MapUtil { public static String getValue(Map map, String key) { return map.get(key); } } 2024-09-03
540 How do you remove a key-value pair from a dictionary in Python? def remove_key(dct, key): dct.pop(key, None) 2024-09-03
541 How do you remove a key from an object in JavaScript? function removeKey(obj, key) { delete obj[key]; } 2024-09-03
542 How do you remove a key-value pair from a map in Java? import java.util.Map; public class MapUtil { public static void removeKey(Map map, String key) { map.remove(key); } } 2024-09-03
543 How do you read a file in Python? def read_file(filename): with open(filename, "r") as file: return file.read() 2024-09-03
544 How do you write to a file in Python? def write_file(filename, content): with open(filename, "w") as file: file.write(content) 2024-09-03
545 How do you read a file in JavaScript? const fs = require("fs"); function readFile(filename, callback) { fs.readFile(filename, "utf8", callback); } 2024-09-03
546 How do you write to a file in JavaScript? const fs = require("fs"); function writeFile(filename, content, callback) { fs.writeFile(filename, content, "utf8", callback); } 2024-09-03
547 How do you read a file in Java? import java.nio.file.Files; import java.nio.file.Paths; import java.io.IOException; public class FileUtil { public static String readFile(String filename) throws IOException { return new String(Files.readAllBytes(Paths.get(filename))); } } 2024-09-03
548 How do you write to a file in Java? import java.nio.file.Files; import java.nio.file.Paths; import java.io.IOException; public class FileUtil { public static void writeFile(String filename, String content) throws IOException { Files.write(Paths.get(filename), content.getBytes()); } } 2024-09-03
549 How do you declare a variable in Python? x = 10 2024-09-03
550 How do you declare a variable in JavaScript? let x = 10; 2024-09-03
551 How do you declare a variable in Java? int x = 10; 2024-09-03
552 How do you declare a variable in C++? int x = 10; 2024-09-03
553 How do you create a function in Python? def my_function(): pass 2024-09-03
554 How do you create a function in JavaScript? function myFunction() { // code } 2024-09-03
555 How do you create a function in Java? public void myFunction() { // code } 2024-09-03
556 How do you create a function in C++? void myFunction() { // code } 2024-09-03
557 How do you call a function in Python? my_function() 2024-09-03
558 How do you call a function in JavaScript? myFunction(); 2024-09-03
559 How do you call a function in Java? myFunction(); 2024-09-03
560 How do you call a function in C++? myFunction(); 2024-09-03
561 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-03
562 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-03
563 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-03
564 How do you create an array in C++? int myArray[] = {1, 2, 3}; 2024-09-03
565 How do you add an element to a list in Python? my_list.append(4) 2024-09-03
566 How do you add an element to an array in JavaScript? myArray.push(4); 2024-09-03
567 How do you add an element to an array in Java? myArray[3] = 4; 2024-09-03
568 How do you add an element to an array in C++? myArray[3] = 4; 2024-09-03
569 How do you loop through a list in Python? for item in my_list: print(item) 2024-09-03
570 How do you loop through an array in JavaScript? myArray.forEach(item => console.log(item)); 2024-09-03
571 How do you loop through an array in Java? for (int item : myArray) { System.out.println(item); } 2024-09-03
572 How do you loop through an array in C++? for (int item : myArray) { std::cout << item << std::endl; } 2024-09-03
573 How do you sort a list in Python? my_list.sort() 2024-09-03
574 How do you sort an array in JavaScript? myArray.sort() 2024-09-03
575 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-03
576 How do you sort an array in C++? #include std::sort(myArray, myArray + size); 2024-09-03
577 How do you find the length of a list in Python? len(my_list) 2024-09-03
578 How do you find the length of an array in JavaScript? myArray.length 2024-09-03
579 How do you find the length of an array in Java? myArray.length; 2024-09-03
580 How do you find the length of an array in C++? sizeof(myArray) / sizeof(myArray[0]); 2024-09-03
581 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-03
582 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle exception } 2024-09-03
583 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-03
584 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { // handle exception } 2024-09-03
585 How do you create a class in Python? class MyClass: def __init__(self, value): self.value = value 2024-09-03
586 How do you create a class in JavaScript? class MyClass { constructor(value) { this.value = value; } } 2024-09-03
587 How do you create a class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } } 2024-09-03
588 How do you create a class in C++? class MyClass { int value; public: MyClass(int value) : value(value) {} }; 2024-09-03
589 How do you instantiate an object in Python? obj = MyClass(value) 2024-09-03
590 How do you instantiate an object in JavaScript? let obj = new MyClass(value); 2024-09-03
591 How do you instantiate an object in Java? MyClass obj = new MyClass(value); 2024-09-03
592 How do you instantiate an object in C++? MyClass obj(value); 2024-09-03
593 How do you create a constructor in Python? def __init__(self, value): self.value = value 2024-09-03
594 How do you create a constructor in JavaScript? constructor(value) { this.value = value; } 2024-09-03
595 How do you create a constructor in Java? public MyClass(int value) { this.value = value; } 2024-09-03
596 How do you create a constructor in C++? MyClass(int value) : value(value) {} 2024-09-03
597 How do you create an inheritance in Python? class SubClass(MyClass): pass 2024-09-03
598 How do you create an inheritance in JavaScript? class SubClass extends MyClass {} 2024-09-03
599 How do you create an inheritance in Java? public class SubClass extends MyClass {} 2024-09-03
600 How do you create an inheritance in C++? class SubClass : public MyClass {} 2024-09-03
601 How do you override a method in Python? def my_method(self): pass 2024-09-03
602 How do you override a method in JavaScript? class SubClass extends MyClass { myMethod() {} } 2024-09-03
603 How do you override a method in Java? public class SubClass extends MyClass { @Override public void myMethod() {} } 2024-09-03
604 How do you override a method in C++? class SubClass : public MyClass { void myMethod() override {} } 2024-09-03
605 How do you define a class variable in Python? class MyClass: class_variable = 10 2024-09-03
606 How do you define a class variable in JavaScript? class MyClass { static classVariable = 10; } 2024-09-03
607 How do you define a class variable in Java? public class MyClass { public static int classVariable = 10; } 2024-09-03
608 How do you define a class variable in C++? class MyClass { static int classVariable; }; int MyClass::classVariable = 10; 2024-09-03
609 How do you use a lambda function in Python? lambda x: x * 2 2024-09-03
610 How do you use a lambda function in JavaScript? (x => x * 2) 2024-09-03
611 How do you use a lambda function in Java? () -> { return x * 2; } 2024-09-03
612 How do you use a lambda function in C++? [](int x) { return x * 2; } 2024-09-03
613 How do you write a comment in Python? # This is a comment 2024-09-03
614 How do you write a comment in JavaScript? // This is a comment 2024-09-03
615 How do you write a comment in Java? // This is a comment 2024-09-03
616 How do you write a comment in C++? // This is a comment 2024-09-03
617 How do you use a for loop in Python? for i in range(5): print(i) 2024-09-03
618 How do you use a for loop in JavaScript? for (let i = 0; i < 5; i++) { console.log(i); } 2024-09-03
619 How do you use a for loop in Java? for (int i = 0; i < 5; i++) { System.out.println(i); } 2024-09-03
620 How do you use a for loop in C++? for (int i = 0; i < 5; i++) { std::cout << i << std::endl; } 2024-09-03
621 How do you use a while loop in Python? while condition: # code 2024-09-03
622 How do you use a while loop in JavaScript? while (condition) { // code } 2024-09-03
623 How do you use a while loop in Java? while (condition) { // code } 2024-09-03
624 How do you use a while loop in C++? while (condition) { // code } 2024-09-03
625 How do you use a switch case in Python? Python does not have a built-in switch case statement. 2024-09-03
626 How do you use a switch case in JavaScript? switch (expression) { case value: // code break; default: // code } 2024-09-03
627 How do you use a switch case in Java? switch (expression) { case value: // code break; default: // code } 2024-09-03
628 How do you use a switch case in C++? switch (expression) { case value: // code break; default: // code } 2024-09-03
629 How do you import a module in Python? import module_name 2024-09-03
630 Who wrote "Pride and Prejudice"? Jane Austen 2024-09-04
631 What is the boiling point of water? 100°C 2024-09-04
632 What is the largest planet in our solar system? Jupiter 2024-09-04
633 Who painted the Mona Lisa? Leonardo da Vinci 2024-09-04
634 What is the speed of light? 299,792,458 m/s 2024-09-04
635 What is the chemical symbol for gold? Au 2024-09-04
636 Who is known as the father of computers? Charles Babbage 2024-09-04
637 What is the main ingredient in traditional sushi? Rice 2024-09-04
638 Which element has the atomic number 1? Hydrogen 2024-09-04
639 What is the capital of Italy? Rome 2024-09-04
640 Who discovered penicillin? Alexander Fleming 2024-09-04
641 What is the smallest planet in our solar system? Mercury 2024-09-04
642 Who wrote "The Odyssey"? Homer 2024-09-04
643 What is the chemical symbol for water? H2O 2024-09-04
644 Who was the first person to walk on the moon? Neil Armstrong 2024-09-04
645 What is the largest ocean on Earth? Pacific Ocean 2024-09-04
646 Who developed the theory of relativity? Albert Einstein 2024-09-04
647 What is the hardest natural substance on Earth? Diamond 2024-09-04
648 Who painted the Sistine Chapel ceiling? Michelangelo 2024-09-04
649 What is the capital of Japan? Tokyo 2024-09-04
650 What is the largest desert in the world? Sahara 2024-09-04
651 Who wrote "To Kill a Mockingbird"? Harper Lee 2024-09-04
652 What is the chemical symbol for sodium? Na 2024-09-04
653 Who was the first President of the United States? George Washington 2024-09-04
654 What is the largest mammal in the world? Blue Whale 2024-09-04
655 Who developed the polio vaccine? Jonas Salk 2024-09-04
656 What is the capital of Canada? Ottawa 2024-09-04
657 Who discovered gravity? Isaac Newton 2024-09-04
658 What is the largest continent by area? Asia 2024-09-04
659 Who wrote "1984"? George Orwell 2024-09-04
660 What is the chemical symbol for iron? Fe 2024-09-04
661 Who invented the telephone? Alexander Graham Bell 2024-09-04
662 What is the deepest point in the ocean? Mariana Trench 2024-09-04
663 What is the capital of Russia? Moscow 2024-09-04
664 Who developed the first successful airplane? Wright Brothers 2024-09-04
665 What is the largest organ in the human body? Skin 2024-09-04
666 Who wrote "The Great Gatsby"? F. Scott Fitzgerald 2024-09-04
667 What is the capital of China? Beijing 2024-09-04
668 Who discovered penicillin? Alexander Fleming 2024-09-04
669 What is the fastest land animal? Cheetah 2024-09-04
670 Who is known as the father of modern physics? Albert Einstein 2024-09-04
671 What is the chemical symbol for oxygen? O 2024-09-04
672 Who wrote "War and Peace"? Leo Tolstoy 2024-09-04
673 What is the capital of Australia? Canberra 2024-09-04
674 What is the most abundant gas in the Earth's atmosphere? Nitrogen 2024-09-04
675 Who discovered electricity? Benjamin Franklin 2024-09-04
676 What is the tallest mountain in the world? Mount Everest 2024-09-04
677 Who painted "Starry Night"? Vincent van Gogh 2024-09-04
678 What is the capital of Brazil? Brasília 2024-09-04
679 Who is known as the father of modern chemistry? Antoine Lavoisier 2024-09-04
680 What is the chemical symbol for potassium? K 2024-09-04
681 Who was the first woman to win a Nobel Prize? Marie Curie 2024-09-04
682 What is the largest island in the world? Greenland 2024-09-04
683 Who wrote "The Catcher in the Rye"? J.D. Salinger 2024-09-04
684 What is the chemical symbol for silver? Ag 2024-09-04
685 Who discovered the structure of DNA? James Watson and Francis Crick 2024-09-04
686 What is the capital of Germany? Berlin 2024-09-04
687 Who invented the light bulb? Thomas Edison 2024-09-04
688 What is the largest bone in the human body? Femur 2024-09-04
689 Who wrote "Moby-Dick"? Herman Melville 2024-09-04
690 What is the capital of India? New Delhi 2024-09-04
691 Who discovered the planet Uranus? William Herschel 2024-09-04
692 What is the smallest bone in the human body? Stapes 2024-09-04
693 Who wrote "The Divine Comedy"? Dante Alighieri 2024-09-04
694 What is the chemical symbol for lead? Pb 2024-09-04
695 Who discovered radioactivity? Henri Becquerel 2024-09-04
696 What is the capital of South Korea? Seoul 2024-09-04
697 Who developed the first successful vaccine for smallpox? Edward Jenner 2024-09-04
698 What is the chemical symbol for mercury? Hg 2024-09-04
699 Who wrote "The Lord of the Rings"? J.R.R. Tolkien 2024-09-04
700 What is the capital of Spain? Madrid 2024-09-04
701 Who developed the theory of evolution by natural selection? Charles Darwin 2024-09-04
702 What is the chemical symbol for aluminum? Al 2024-09-04
703 Who discovered the electron? J.J. Thomson 2024-09-04
704 What is the largest lake in the world? Caspian Sea 2024-09-04
705 Who painted "The Persistence of Memory"? Salvador Dalí 2024-09-04
706 What is the capital of Egypt? Cairo 2024-09-04
707 Who invented the first practical automobile? Karl Benz 2024-09-04
708 What is the chemical symbol for gold? Au 2024-09-04
709 Who wrote "Pride and Prejudice"? Jane Austen 2024-09-04
710 What is the largest river in the world by volume? Amazon River 2024-09-04
711 Who discovered penicillin? Alexander Fleming 2024-09-04
712 What is the capital of France? Paris 2024-09-04
713 Who developed the first successful vaccine? Edward Jenner 2024-09-04
714 What is the chemical symbol for chlorine? Cl 2024-09-04
715 Who wrote "Brave New World"? Aldous Huxley 2024-09-04
716 What is the largest volcano in the world? Mauna Loa 2024-09-04
717 Who painted "The Last Supper"? Leonardo da Vinci 2024-09-04
718 What is the chemical symbol for carbon? C 2024-09-04
719 Who wrote "The Iliad"? Homer 2024-09-04
720 What is the capital of Mexico? Mexico City 2024-09-04
721 Who discovered the circulation of blood? William Harvey 2024-09-04
722 What is the chemical symbol for copper? Cu 2024-09-04
723 Who wrote "The Brothers Karamazov"? Fyodor Dostoevsky 2024-09-04
724 What is the highest mountain in Africa? Mount Kilimanjaro 2024-09-04
725 Who painted the "Mona Lisa"? Leonardo da Vinci 2024-09-04
726 What is the chemical symbol for zinc? Zn 2024-09-04
727 Who wrote "Crime and Punishment"? Fyodor Dostoevsky 2024-09-04
728 What is the largest island in the Mediterranean Sea? Sicily 2024-09-04
729 Who developed the first successful polio vaccine? Jonas Salk 2024-09-04
730 What is the chemical symbol for tin? Sn 2024-09-04
731 What is the square root of 64? 8 2024-09-04
732 Who wrote "Hamlet"? William Shakespeare 2024-09-04
733 What is the capital of Japan? Tokyo 2024-09-04
734 Who developed the general theory of relativity? Albert Einstein 2024-09-04
735 What is the chemical symbol for oxygen? O 2024-09-04
736 Who wrote "The Great Gatsby"? F. Scott Fitzgerald 2024-09-04
737 What is the capital of Italy? Rome 2024-09-04
738 Who discovered the law of universal gravitation? Isaac Newton 2024-09-04
739 What is the chemical symbol for helium? He 2024-09-04
740 Who wrote "To Kill a Mockingbird"? Harper Lee 2024-09-04
741 What is the largest planet in our solar system? Jupiter 2024-09-04
742 Who discovered the laws of motion? Isaac Newton 2024-09-04
743 What is the chemical symbol for sodium? Na 2024-09-04
744 Who wrote "1984"? George Orwell 2024-09-04
745 What is the tallest building in the world? Burj Khalifa 2024-09-04
746 Who developed the theory of electromagnetism? James Clerk Maxwell 2024-09-04
747 What is the chemical symbol for calcium? Ca 2024-09-04
748 Who wrote "War and Peace"? Leo Tolstoy 2024-09-04
749 What is the smallest planet in our solar system? Mercury 2024-09-04
750 Who discovered the concept of the photon? Albert Einstein 2024-09-04
751 What is the chemical symbol for iron? Fe 2024-09-04
752 Who wrote "The Odyssey"? Homer 2024-09-04
753 What is the deepest ocean in the world? Pacific Ocean 2024-09-04
754 Who developed the periodic table of elements? Dmitri Mendeleev 2024-09-04
755 What is the chemical symbol for hydrogen? H 2024-09-04
756 Who wrote "The Adventures of Tom Sawyer"? Mark Twain 2024-09-04
757 What is the most spoken language in the world? Mandarin Chinese 2024-09-04
758 Who discovered the neutron? James Chadwick 2024-09-04
759 What is the chemical symbol for fluorine? F 2024-09-04
760 Who wrote "The Count of Monte Cristo"? Alexandre Dumas 2024-09-04
761 What is the largest desert in the world? Antarctic Desert 2024-09-04
762 Who discovered the law of conservation of mass? Antoine Lavoisier 2024-09-04
763 What is the chemical symbol for magnesium? Mg 2024-09-04
764 Who wrote "Les Misérables"? Victor Hugo 2024-09-04
765 What is the fastest land animal? Cheetah 2024-09-04
766 Who discovered the electron? J.J. Thomson 2024-09-04
767 What is the chemical symbol for potassium? K 2024-09-04
768 Who wrote "Moby-Dick"? Herman Melville 2024-09-04
769 What is the largest mammal in the world? Blue Whale 2024-09-04
770 Who discovered the DNA double helix structure? James Watson and Francis Crick 2024-09-04
771 What is the chemical symbol for sulfur? S 2024-09-04
772 Who wrote "Don Quixote"? Miguel de Cervantes 2024-09-04
773 What is the longest river in Africa? Nile River 2024-09-04
774 Who developed the theory of evolution by natural selection? Charles Darwin 2024-09-04
775 What is the chemical symbol for neon? Ne 2024-09-04
776 Who wrote "The Divine Comedy"? Dante Alighieri 2024-09-04
777 What is the largest ocean on Earth? Pacific Ocean 2024-09-04
778 Who discovered the electron? J.J. Thomson 2024-09-04
779 What is the chemical symbol for nitrogen? N 2024-09-04
780 Who wrote "The Old Man and the Sea"? Ernest Hemingway 2024-09-04
781 What is the tallest mountain in the world? Mount Everest 2024-09-04
782 Who discovered penicillin? Alexander Fleming 2024-09-04
783 What is the chemical symbol for argon? Ar 2024-09-04
784 Who wrote "The Catcher in the Rye"? J.D. Salinger 2024-09-04
785 What is the largest country by land area? Russia 2024-09-04
786 Who developed the theory of general relativity? Albert Einstein 2024-09-04
787 What is the chemical symbol for chlorine? Cl 2024-09-04
788 Who wrote "Frankenstein"? Mary Shelley 2024-09-04
789 What is the most abundant gas in the Earth's atmosphere? Nitrogen 2024-09-04
790 Who discovered the law of gravity? Isaac Newton 2024-09-04
791 What is the chemical symbol for silver? Ag 2024-09-04
792 Who wrote "The Hobbit"? J.R.R. Tolkien 2024-09-04
793 What is the hottest planet in our solar system? Venus 2024-09-04
794 Who discovered the radioactivity? Henri Becquerel 2024-09-04
795 What is the chemical symbol for gold? Au 2024-09-04
796 Who wrote "The Picture of Dorian Gray"? Oscar Wilde 2024-09-04
797 What is the largest lake in the world by surface area? Caspian Sea 2024-09-04
798 Who discovered the X-ray? Wilhelm Conrad Roentgen 2024-09-04
799 What is the chemical symbol for carbon? C 2024-09-04
800 Who wrote "Pride and Prejudice"? Jane Austen 2024-09-04
801 What is the most populous country in the world? China 2024-09-04
802 Who discovered the law of reflection? Euclid 2024-09-04
803 What is the chemical symbol for phosphorus? P 2024-09-04
804 Who wrote "Great Expectations"? Charles Dickens 2024-09-04
805 What is the smallest continent by land area? Australia 2024-09-04
806 Who discovered the law of definite proportions? Joseph Proust 2024-09-04
807 What is the chemical symbol for platinum? Pt 2024-09-04
808 Who wrote "Anna Karenina"? Leo Tolstoy 2024-09-04
809 What is the longest river in the world? Nile River 2024-09-04
810 Who discovered the photoelectric effect? Albert Einstein 2024-09-04
811 What is the chemical symbol for aluminum? Al 2024-09-04
812 Who wrote "Wuthering Heights"? Emily Brontë 2024-09-04
813 What is the largest island in the world? Greenland 2024-09-04
814 Who discovered the proton? Ernest Rutherford 2024-09-04
815 What is the chemical symbol for zinc? Zn 2024-09-04
816 Who wrote "The Brothers Karamazov"? Fyodor Dostoevsky 2024-09-04
817 What is the highest waterfall in the world? Angel Falls 2024-09-04
818 Who developed the theory of plate tectonics? Alfred Wegener 2024-09-04
819 What is the chemical symbol for lead? Pb 2024-09-04
820 Who wrote "The Grapes of Wrath"? John Steinbeck 2024-09-04
821 What is the deepest point in the world? Mariana Trench 2024-09-04
822 Who developed the theory of quantum mechanics? Max Planck 2024-09-04
823 What is the chemical symbol for copper? Cu 2024-09-04
824 Who wrote "One Hundred Years of Solitude"? Gabriel García Márquez 2024-09-04
825 How do you declare a variable in JavaScript? let variableName = value; 2024-09-04
826 How do you declare a variable in Java? int variableName = value; 2024-09-04
827 How do you declare a variable in C++? int variableName = value; 2024-09-04
828 How do you write a function in Python? def function_name(parameters): # code 2024-09-04
829 How do you write a function in JavaScript? function functionName(parameters) { // code } 2024-09-04
830 How do you write a function in Java? public returnType functionName(parameters) { // code } 2024-09-04
831 How do you write a function in C++? returnType functionName(parameters) { // code } 2024-09-04
832 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
833 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
834 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-04
835 How do you create an array in C++? int myArray[] = {1, 2, 3}; 2024-09-04
836 How do you concatenate strings in Python? result = str1 + str2 2024-09-04
837 How do you concatenate strings in JavaScript? let result = str1 + str2; 2024-09-04
838 How do you concatenate strings in Java? String result = str1 + str2; 2024-09-04
839 How do you concatenate strings in C++? std::string result = str1 + str2; 2024-09-04
840 How do you convert a string to an integer in Python? num = int(string) 2024-09-04
841 How do you convert a string to an integer in JavaScript? let num = parseInt(string); 2024-09-04
842 How do you convert a string to an integer in Java? int num = Integer.parseInt(string); 2024-09-04
843 How do you convert a string to an integer in C++? int num = std::stoi(string); 2024-09-04
844 How do you write a for loop in Python? for i in range(10): print(i) 2024-09-04
845 How do you write a for loop in JavaScript? for (let i = 0; i < 10; i++) { console.log(i); } 2024-09-04
846 How do you write a for loop in Java? for (int i = 0; i < 10; i++) { System.out.println(i); } 2024-09-04
847 How do you write a for loop in C++? for (int i = 0; i < 10; i++) { std::cout << i << std::endl; } 2024-09-04
848 How do you reverse a string in Python? reversed_string = my_string[::-1] 2024-09-04
849 How do you reverse a string in JavaScript? let reversedString = myString.split('').reverse().join(''); 2024-09-04
850 How do you reverse a string in Java? String reversedString = new StringBuilder(myString).reverse().toString(); 2024-09-04
851 How do you reverse a string in C++? std::string reversedString = std::string(myString.rbegin(), myString.rend()); 2024-09-04
852 How do you create a dictionary in Python? my_dict = {'key': 'value'} 2024-09-04
853 How do you create an object in JavaScript? let myObject = { key: value }; 2024-09-04
854 How do you create a map in Java? Map myMap = new HashMap<>(); 2024-09-04
855 How do you create a map in C++? std::map myMap; 2024-09-04
856 How do you convert a list to a string in Python? result = ",".join(my_list) 2024-09-04
857 How do you convert an array to a string in JavaScript? let result = myArray.join(","); 2024-09-04
858 How do you convert an array to a string in Java? String result = String.join(",", myArray); 2024-09-04
859 How do you convert an array to a string in C++? std::string result = std::accumulate(std::next(myArray.begin()), myArray.end(), std::to_string(myArray[0]), [](std::string a, int b) { return a + "," + std::to_string(b); }); 2024-09-04
860 How do you create a tuple in Python? my_tuple = (1, 2, 3) 2024-09-04
861 How do you create a set in Python? my_set = {1, 2, 3} 2024-09-04
862 How do you create a set in JavaScript? let mySet = new Set([1, 2, 3]); 2024-09-04
863 How do you create a set in Java? Set mySet = new HashSet<>(Arrays.asList(1, 2, 3)); 2024-09-04
864 How do you create a set in C++? std::set mySet = {1, 2, 3}; 2024-09-04
865 How do you create a list of lists in Python? list_of_lists = [[1, 2], [3, 4]] 2024-09-04
866 How do you create a 2D array in JavaScript? let matrix = [[1, 2], [3, 4]]; 2024-09-04
867 How do you create a 2D array in Java? int[][] matrix = {{1, 2}, {3, 4}}; 2024-09-04
868 How do you create a 2D array in C++? int matrix[2][2] = {{1, 2}, {3, 4}}; 2024-09-04
869 How do you create a list comprehension in Python? [x for x in range(10) if x % 2 == 0] 2024-09-04
870 How do you create an arrow function in JavaScript? let func = (x) => x * 2; 2024-09-04
871 How do you create a lambda expression in Java? List list = Arrays.asList(1, 2, 3); list.forEach(x -> System.out.println(x)); 2024-09-04
872 How do you create a lambda function in C++? auto func = [](int x) { return x * 2; }; 2024-09-04
873 How do you handle exceptions in Python? try: # code except Exception as e: print(e) 2024-09-04
874 How do you handle exceptions in JavaScript? try { // code } catch (e) { console.log(e); } 2024-09-04
875 How do you handle exceptions in Java? try { // code } catch (Exception e) { System.out.println(e); } 2024-09-04
876 How do you handle exceptions in C++? try { // code } catch (std::exception& e) { std::cout << e.what() << std::endl; } 2024-09-04
877 How do you write a class in Python? class MyClass: def __init__(self): pass 2024-09-04
878 How do you write a class in JavaScript? class MyClass { constructor() { // code } } 2024-09-04
879 How do you write a class in Java? public class MyClass { public MyClass() { // code } } 2024-09-04
880 How do you write a class in C++? class MyClass { public: MyClass() { // code } }; 2024-09-04
881 How do you inherit a class in Python? class ChildClass(ParentClass): pass 2024-09-04
882 How do you inherit a class in JavaScript? class ChildClass extends ParentClass { constructor() { super(); } } 2024-09-04
883 How do you inherit a class in Java? public class ChildClass extends ParentClass { public ChildClass() { super(); } } 2024-09-04
884 How do you inherit a class in C++? class ChildClass : public ParentClass { public: ChildClass() : ParentClass() {} }; 2024-09-04
885 How do you read a file in Python? with open('file.txt', 'r') as file: data = file.read() 2024-09-04
886 How do you read a file in JavaScript? const fs = require('fs'); fs.readFile('file.txt', 'utf8', (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
887 How do you read a file in Java? BufferedReader reader = new BufferedReader(new FileReader("file.txt")); String line = reader.readLine(); 2024-09-04
888 How do you read a file in C++? std::ifstream file("file.txt"); std::string line; while (std::getline(file, line)) { std::cout << line << std::endl; } 2024-09-04
889 How do you write to a file in Python? with open('file.txt', 'w') as file: file.write('Hello World') 2024-09-04
890 How do you write to a file in JavaScript? const fs = require('fs'); fs.writeFile('file.txt', 'Hello World', (err) => { if (err) throw err; console.log('File written'); }); 2024-09-04
891 How do you write to a file in Java? BufferedWriter writer = new BufferedWriter(new FileWriter("file.txt")); writer.write("Hello World"); 2024-09-04
892 How do you write to a file in C++? std::ofstream file("file.txt"); file << "Hello World"; 2024-09-04
893 How do you append to a file in Python? with open('file.txt', 'a') as file: file.write('Hello Again') 2024-09-04
894 How do you append to a file in JavaScript? const fs = require('fs'); fs.appendFile('file.txt', 'Hello Again', (err) => { if (err) throw err; console.log('File appended'); }); 2024-09-04
895 How do you append to a file in Java? BufferedWriter writer = new BufferedWriter(new FileWriter("file.txt", true)); writer.write("Hello Again"); 2024-09-04
896 How do you append to a file in C++? std::ofstream file("file.txt", std::ios_base::app); file << "Hello Again"; 2024-09-04
897 How do you delete a file in Python? import os os.remove('file.txt') 2024-09-04
898 How do you delete a file in JavaScript? const fs = require('fs'); fs.unlink('file.txt', (err) => { if (err) throw err; console.log('File deleted'); }); 2024-09-04
899 How do you delete a file in Java? File file = new File("file.txt"); if (file.delete()) { System.out.println("File deleted"); } 2024-09-04
900 How do you concatenate strings in Python? result = str1 + str2 2024-09-04
901 How do you concatenate strings in JavaScript? let result = str1 + str2; 2024-09-04
902 How do you concatenate strings in Java? String result = str1 + str2; 2024-09-04
903 How do you concatenate strings in C++? std::string result = str1 + str2; 2024-09-04
904 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
905 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
906 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-04
907 How do you create a vector in C++? std::vector myVector = {1, 2, 3}; 2024-09-04
908 How do you check if a list is empty in Python? if not my_list: 2024-09-04
909 How do you check if an array is empty in JavaScript? if (myArray.length === 0) { /* empty */ } 2024-09-04
910 How do you check if an array is empty in Java? if (myArray.length == 0) { /* empty */ } 2024-09-04
911 How do you check if a vector is empty in C++? if (myVector.empty()) { /* empty */ } 2024-09-04
912 How do you append to a list in Python? my_list.append(item) 2024-09-04
913 How do you append to an array in JavaScript? myArray.push(item); 2024-09-04
914 How do you append to an array in Java? myList.add(item); 2024-09-04
915 How do you append to a vector in C++? myVector.push_back(item); 2024-09-04
916 How do you sort a list in Python? my_list.sort() 2024-09-04
917 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
918 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
919 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
920 How do you find the length of a list in Python? length = len(my_list) 2024-09-04
921 How do you find the length of an array in JavaScript? let length = myArray.length; 2024-09-04
922 How do you find the length of a list in Java? int length = myList.size(); 2024-09-04
923 How do you find the size of a vector in C++? size_t size = myVector.size(); 2024-09-04
924 How do you remove an item from a list in Python? my_list.remove(item) 2024-09-04
925 How do you remove an item from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
926 How do you remove an item from a list in Java? myList.remove(item); 2024-09-04
927 How do you remove an item from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
928 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-04
929 How do you find the maximum value in an array in JavaScript? let maxValue = Math.max(...myArray); 2024-09-04
930 How do you find the maximum value in a list in Java? int maxValue = Collections.max(myList); 2024-09-04
931 How do you find the maximum value in a vector in C++? int maxValue = *std::max_element(myVector.begin(), myVector.end()); 2024-09-04
932 How do you check if a number is even in Python? is_even = number % 2 == 0 2024-09-04
933 How do you check if a number is even in JavaScript? let isEven = number % 2 === 0; 2024-09-04
934 How do you check if a number is even in Java? boolean isEven = number % 2 == 0; 2024-09-04
935 How do you check if a number is even in C++? bool isEven = number % 2 == 0; 2024-09-04
936 How do you check if a number is odd in Python? is_odd = number % 2 != 0 2024-09-04
937 How do you check if a number is odd in JavaScript? let isOdd = number % 2 !== 0; 2024-09-04
938 How do you check if a number is odd in Java? boolean isOdd = number % 2 != 0; 2024-09-04
939 How do you check if a number is odd in C++? bool isOdd = number % 2 != 0; 2024-09-04
940 How do you find the factorial of a number in Python? import math factorial = math.factorial(number) 2024-09-04
941 How do you find the factorial of a number in JavaScript? function factorial(n) { if (n <= 1) return 1; return n * factorial(n - 1); } 2024-09-04
942 How do you find the factorial of a number in Java? public static long factorial(int n) { if (n <= 1) return 1; return n * factorial(n - 1); } 2024-09-04
943 How do you find the factorial of a number in C++? long long factorial(int n) { if (n <= 1) return 1; return n * factorial(n - 1); } 2024-09-04
944 How do you reverse a string in Python? reversed_str = str[::-1] 2024-09-04
945 How do you reverse a string in JavaScript? let reversedStr = str.split("").reverse().join(""); 2024-09-04
946 How do you reverse a string in Java? String reversedStr = new StringBuilder(str).reverse().toString(); 2024-09-04
947 How do you reverse a string in C++? std::reverse(str.begin(), str.end()); 2024-09-04
948 How do you find the length of a string in Python? length = len(my_string) 2024-09-04
949 How do you find the length of a string in JavaScript? let length = myString.length; 2024-09-04
950 How do you find the length of a string in Java? int length = myString.length(); 2024-09-04
951 How do you find the length of a string in C++? size_t length = myString.length(); 2024-09-04
952 How do you convert a string to uppercase in Python? upper_str = my_string.upper() 2024-09-04
953 How do you convert a string to uppercase in JavaScript? let upperStr = myString.toUpperCase(); 2024-09-04
954 How do you convert a string to uppercase in Java? String upperStr = myString.toUpperCase(); 2024-09-04
955 How do you convert a string to uppercase in C++? std::transform(myString.begin(), myString.end(), myString.begin(), ::toupper); 2024-09-04
956 How do you convert a string to lowercase in Python? lower_str = my_string.lower() 2024-09-04
957 How do you convert a string to lowercase in JavaScript? let lowerStr = myString.toLowerCase(); 2024-09-04
958 How do you convert a string to lowercase in Java? String lowerStr = myString.toLowerCase(); 2024-09-04
959 How do you convert a string to lowercase in C++? std::transform(myString.begin(), myString.end(), myString.begin(), ::tolower); 2024-09-04
960 How do you find the index of an element in a list in Python? index = my_list.index(element) 2024-09-04
961 How do you find the index of an element in an array in JavaScript? let index = myArray.indexOf(element); 2024-09-04
962 How do you find the index of an element in a list in Java? int index = myList.indexOf(element); 2024-09-04
963 How do you find the index of an element in a vector in C++? auto it = std::find(myVector.begin(), myVector.end(), element); int index = std::distance(myVector.begin(), it); 2024-09-04
964 How do you check if a key exists in a dictionary in Python? if key in my_dict: 2024-09-04
965 How do you check if a key exists in an object in JavaScript? if (key in myObject) { /* key exists */ } 2024-09-04
966 How do you check if a key exists in a map in Java? boolean exists = myMap.containsKey(key); 2024-09-04
967 How do you check if a key exists in a map in C++? bool exists = myMap.find(key) != myMap.end(); 2024-09-04
968 How do you remove a key from a dictionary in Python? del my_dict[key] 2024-09-04
969 How do you remove a key from an object in JavaScript? delete myObject[key]; 2024-09-04
970 How do you remove a key from a map in Java? myMap.remove(key); 2024-09-04
971 How do you remove a key from a map in C++? myMap.erase(key); 2024-09-04
972 How do you get the value associated with a key in a dictionary in Python? value = my_dict[key] 2024-09-04
973 How do you get the value associated with a key in an object in JavaScript? let value = myObject[key]; 2024-09-04
974 How do you get the value associated with a key in a map in Java? V value = myMap.get(key); 2024-09-04
975 How do you get the value associated with a key in a map in C++? auto it = myMap.find(key); if (it != myMap.end()) { value = it->second; } 2024-09-04
976 How do you iterate over a list in Python? for item in my_list: 2024-09-04
977 How do you iterate over an array in JavaScript? for (let item of myArray) { /* process item */ } 2024-09-04
978 How do you iterate over a list in Java? for (Object item : myList) { /* process item */ } 2024-09-04
979 How do you iterate over a vector in C++? for (const auto& item : myVector) { /* process item */ } 2024-09-04
980 How do you define a function in Python? def my_function(param1, param2): return result 2024-09-04
981 How do you define a function in JavaScript? function myFunction(param1, param2) { return result; } 2024-09-04
982 How do you define a method in Java? public ReturnType myMethod(ParamType param1, ParamType param2) { return result; } 2024-09-04
983 How do you define a function in C++? ReturnType myFunction(ParamType param1, ParamType param2) { return result; } 2024-09-04
984 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-04
985 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle exception } 2024-09-04
986 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-04
987 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { // handle exception } 2024-09-04
988 How do you check if a list is empty in Python? if not my_list: 2024-09-04
989 How do you check if an array is empty in JavaScript? if (myArray.length === 0) { /* array is empty */ } 2024-09-04
990 How do you check if a list is empty in Java? if (myList.isEmpty()) { /* list is empty */ } 2024-09-04
991 How do you check if a vector is empty in C++? if (myVector.empty()) { /* vector is empty */ } 2024-09-04
992 How do you sort a list in Python? my_list.sort() 2024-09-04
993 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
994 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
995 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
996 How do you concatenate strings in Python? result = str1 + str2 2024-09-04
997 How do you concatenate strings in JavaScript? let result = str1 + str2; 2024-09-04
998 How do you concatenate strings in Java? String result = str1 + str2; 2024-09-04
999 How do you concatenate strings in C++? std::string result = str1 + str2; 2024-09-04
1000 How do you reverse a string in Python? reversed_str = my_string[::-1] 2024-09-04
1001 How do you reverse a string in JavaScript? let reversedStr = myString.split("").reverse().join(""); 2024-09-04
1002 How do you reverse a string in Java? String reversedStr = new StringBuilder(myString).reverse().toString(); 2024-09-04
1003 How do you reverse a string in C++? std::reverse(myString.begin(), myString.end()); 2024-09-04
1004 How do you check if a number is even in Python? if num % 2 == 0: 2024-09-04
1005 How do you check if a number is even in JavaScript? if (num % 2 === 0) { /* number is even */ } 2024-09-04
1006 How do you check if a number is even in Java? if (num % 2 == 0) { /* number is even */ } 2024-09-04
1007 How do you check if a number is even in C++? if (num % 2 == 0) { /* number is even */ } 2024-09-04
1008 How do you calculate the factorial of a number in Python? import math factorial = math.factorial(n) 2024-09-04
1009 How do you calculate the factorial of a number in JavaScript? function factorial(n) { if (n === 0) return 1; return n * factorial(n - 1); } 2024-09-04
1010 How do you calculate the factorial of a number in Java? public static int factorial(int n) { if (n == 0) return 1; return n * factorial(n - 1); } 2024-09-04
1011 How do you calculate the factorial of a number in C++? int factorial(int n) { if (n == 0) return 1; return n * factorial(n - 1); } 2024-09-04
1012 How do you define a class in Python? class MyClass: def __init__(self, value): self.value = value 2024-09-04
1013 How do you define a class in JavaScript? class MyClass { constructor(value) { this.value = value; } } 2024-09-04
1014 How do you define a class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } } 2024-09-04
1015 How do you define a class in C++? class MyClass { int value; public: MyClass(int val) : value(val) {} }; 2024-09-04
1016 How do you create an object in Python? obj = MyClass(value) 2024-09-04
1017 How do you create an object in JavaScript? let obj = new MyClass(value); 2024-09-04
1018 How do you create an object in Java? MyClass obj = new MyClass(value); 2024-09-04
1019 How do you create an object in C++? MyClass obj(value); 2024-09-04
1020 How do you access an attribute of an object in Python? obj.attribute 2024-09-04
1021 How do you access an attribute of an object in JavaScript? obj.attribute 2024-09-04
1022 How do you access an attribute of an object in Java? obj.getAttribute() 2024-09-04
1023 How do you access an attribute of an object in C++? obj.attribute 2024-09-04
1024 How do you implement inheritance in Python? class SubClass(MyClass): pass 2024-09-04
1025 How do you implement inheritance in JavaScript? class SubClass extends MyClass { // code } 2024-09-04
1026 How do you implement inheritance in Java? public class SubClass extends MyClass { // code } 2024-09-04
1027 How do you implement inheritance in C++? class SubClass : public MyClass { // code }; 2024-09-04
1028 How do you create a list of numbers in Python? numbers = list(range(start, end)) 2024-09-04
1029 How do you create an array of numbers in JavaScript? let numbers = Array.from({length: end - start}, (_, i) => i + start); 2024-09-04
1030 How do you create a list of numbers in Java? List numbers = IntStream.range(start, end).boxed().collect(Collectors.toList()); 2024-09-04
1031 How do you create a vector of numbers in C++? std::vector numbers(start, end); 2024-09-04
1032 How do you iterate over a list in Python? for item in my_list: 2024-09-04
1033 How do you iterate over an array in JavaScript? myArray.forEach(item => { /* code */ }); 2024-09-04
1034 How do you iterate over a list in Java? for (Integer item : myList) { /* code */ } 2024-09-04
1035 How do you iterate over a vector in C++? for (const auto& item : myVector) { /* code */ } 2024-09-04
1036 How do you add an element to a list in Python? my_list.append(element) 2024-09-04
1037 How do you add an element to an array in JavaScript? myArray.push(element); 2024-09-04
1038 How do you add an element to a list in Java? myList.add(element); 2024-09-04
1039 How do you add an element to a vector in C++? myVector.push_back(element); 2024-09-04
1040 How do you remove an element from a list in Python? my_list.remove(element) 2024-09-04
1041 How do you remove an element from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
1042 How do you remove an element from a list in Java? myList.remove(element); 2024-09-04
1043 How do you remove an element from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
1044 How do you check if a key exists in a dictionary in Python? if key in my_dict: 2024-09-04
1045 How do you check if a key exists in an object in JavaScript? if (key in myObject) { /* key exists */ } 2024-09-04
1046 How do you check if a key exists in a Map in Java? if (myMap.containsKey(key)) { /* key exists */ } 2024-09-04
1047 How do you check if a key exists in a map in C++? if (myMap.find(key) != myMap.end()) { /* key exists */ } 2024-09-04
1048 How do you convert a string to an integer in Python? num = int(my_string) 2024-09-04
1049 How do you convert a string to a number in JavaScript? let num = parseInt(myString, 10); 2024-09-04
1050 How do you convert a string to an integer in Java? int num = Integer.parseInt(myString); 2024-09-04
1051 How do you convert a string to an integer in C++? int num = std::stoi(myString); 2024-09-04
1052 How do you check if a string contains a substring in Python? if substring in my_string: 2024-09-04
1053 How do you check if a string contains a substring in JavaScript? if (myString.includes(substring)) { /* substring exists */ } 2024-09-04
1054 How do you check if a string contains a substring in Java? if (myString.contains(substring)) { /* substring exists */ } 2024-09-04
1055 How do you check if a string contains a substring in C++? if (myString.find(substring) != std::string::npos) { /* substring exists */ } 2024-09-04
1056 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
1057 How do you read a file in JavaScript (Node.js)? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { /* code */ }); 2024-09-04
1058 How do you read a file in Java? try (BufferedReader br = new BufferedReader(new FileReader("file.txt"))) { String line; while ((line = br.readLine()) != null) { // process line } } 2024-09-04
1059 How do you read a file in C++? std::ifstream file("file.txt"); std::string line; while (std::getline(file, line)) { // process line } 2024-09-04
1060 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello, world!") 2024-09-04
1061 How do you write to a file in JavaScript (Node.js)? const fs = require("fs"); fs.writeFile("file.txt", "Hello, world!", (err) => { /* code */ }); 2024-09-04
1062 How do you write to a file in Java? try (PrintWriter writer = new PrintWriter(new FileWriter("file.txt"))) { writer.println("Hello, world!"); } 2024-09-04
1063 How do you write to a file in C++? std::ofstream file("file.txt"); file << "Hello, world!"; 2024-09-04
1064 How do you create a function in Python? def my_function(param): return param * 2 2024-09-04
1065 How do you create a function in JavaScript? function myFunction(param) { return param * 2; } 2024-09-04
1066 How do you create a method in Java? public int myMethod(int param) { return param * 2; } 2024-09-04
1067 How do you create a method in C++? int myMethod(int param) { return param * 2; } 2024-09-04
1068 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-04
1069 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle exception } 2024-09-04
1070 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-04
1071 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { // handle exception } 2024-09-04
1072 How do you create a list in Python? my_list = [] 2024-09-04
1073 How do you create an array in JavaScript? let myArray = [] 2024-09-04
1074 How do you create an ArrayList in Java? ArrayList list = new ArrayList<>(); 2024-09-04
1075 How do you create a vector in C++? std::vector myVector; 2024-09-04
1076 How do you get the length of a list in Python? len(my_list) 2024-09-04
1077 How do you get the length of an array in JavaScript? myArray.length 2024-09-04
1078 How do you get the size of an ArrayList in Java? list.size() 2024-09-04
1079 How do you get the size of a vector in C++? myVector.size() 2024-09-04
1080 How do you concatenate strings in Python? result = str1 + str2 2024-09-04
1081 How do you concatenate strings in JavaScript? let result = str1 + str2; 2024-09-04
1082 How do you concatenate strings in Java? String result = str1 + str2; 2024-09-04
1083 How do you concatenate strings in C++? std::string result = str1 + str2; 2024-09-04
1084 How do you check if a list is empty in Python? if not my_list: 2024-09-04
1085 How do you check if an array is empty in JavaScript? if (myArray.length === 0) { /* empty */ } 2024-09-04
1086 How do you check if an ArrayList is empty in Java? if (list.isEmpty()) { /* empty */ } 2024-09-04
1087 How do you check if a vector is empty in C++? if (myVector.empty()) { /* empty */ } 2024-09-04
1088 How do you access an element in a list in Python? element = my_list[index] 2024-09-04
1089 How do you access an element in an array in JavaScript? let element = myArray[index]; 2024-09-04
1090 How do you access an element in an ArrayList in Java? Type element = list.get(index); 2024-09-04
1091 How do you access an element in a vector in C++? Type element = myVector[index]; 2024-09-04
1092 How do you sort a list in Python? my_list.sort() 2024-09-04
1093 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
1094 How do you sort an ArrayList in Java? Collections.sort(list); 2024-09-04
1095 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
1096 How do you reverse a list in Python? my_list.reverse() 2024-09-04
1097 How do you reverse an array in JavaScript? myArray.reverse() 2024-09-04
1098 How do you reverse an ArrayList in Java? Collections.reverse(list); 2024-09-04
1099 How do you reverse a vector in C++? std::reverse(myVector.begin(), myVector.end()); 2024-09-04
1100 How do you append to a list in Python? my_list.append(element) 2024-09-04
1101 How do you append to an array in JavaScript? myArray.push(element); 2024-09-04
1102 How do you add an element to an ArrayList in Java? list.add(element); 2024-09-04
1103 How do you add an element to a vector in C++? myVector.push_back(element); 2024-09-04
1104 How do you remove an element from a list in Python? my_list.remove(element) 2024-09-04
1105 How do you remove an element from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
1106 How do you remove an element from an ArrayList in Java? list.remove(index); 2024-09-04
1107 How do you remove an element from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
1108 How do you check if a key exists in a dictionary in Python? if key in my_dict: 2024-09-04
1109 How do you check if a key exists in an object in JavaScript? if (key in myObject) { /* exists */ } 2024-09-04
1110 How do you check if a key exists in a map in Java? if (myMap.containsKey(key)) { /* exists */ } 2024-09-04
1111 How do you check if a key exists in a map in C++? if (myMap.find(key) != myMap.end()) { /* exists */ } 2024-09-04
1112 How do you get a value by key from a dictionary in Python? value = my_dict[key] 2024-09-04
1113 How do you get a value by key from an object in JavaScript? let value = myObject[key]; 2024-09-04
1114 How do you get a value by key from a map in Java? ValueType value = myMap.get(key); 2024-09-04
1115 How do you get a value by key from a map in C++? ValueType value = myMap[key]; 2024-09-04
1116 How do you iterate over a list in Python? for item in my_list: 2024-09-04
1117 How do you iterate over an array in JavaScript? for (let item of myArray) { /* code */ } 2024-09-04
1118 How do you iterate over an ArrayList in Java? for (Type item : list) { /* code */ } 2024-09-04
1119 How do you iterate over a vector in C++? for (const auto& item : myVector) { /* code */ } 2024-09-04
1120 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-04
1121 How do you find the maximum value in an array in JavaScript? let maxValue = Math.max(...myArray); 2024-09-04
1122 How do you find the maximum value in an ArrayList in Java? int maxValue = Collections.max(list); 2024-09-04
1123 How do you find the maximum value in a vector in C++? auto maxValue = *std::max_element(myVector.begin(), myVector.end()); 2024-09-04
1124 How do you find the minimum value in a list in Python? min_value = min(my_list) 2024-09-04
1125 How do you find the minimum value in an array in JavaScript? let minValue = Math.min(...myArray); 2024-09-04
1126 How do you find the minimum value in an ArrayList in Java? int minValue = Collections.min(list); 2024-09-04
1127 How do you find the minimum value in a vector in C++? auto minValue = *std::min_element(myVector.begin(), myVector.end()); 2024-09-04
1128 How do you create a class in Python? class MyClass: pass 2024-09-04
1129 How do you create a class in JavaScript? class MyClass {} let obj = new MyClass(); 2024-09-04
1130 How do you create a class in Java? public class MyClass { } 2024-09-04
1131 How do you create a class in C++? class MyClass { }; 2024-09-04
1132 How do you create an instance of a class in Python? obj = MyClass() 2024-09-04
1133 How do you create an instance of a class in JavaScript? let obj = new MyClass(); 2024-09-04
1134 How do you create an instance of a class in Java? MyClass obj = new MyClass(); 2024-09-04
1135 How do you create an instance of a class in C++? MyClass obj; 2024-09-04
1136 How do you define a method in a class in Python? def my_method(self): pass 2024-09-04
1137 How do you define a method in a class in JavaScript? class MyClass { myMethod() {} } 2024-09-04
1138 How do you define a method in a class in Java? public void myMethod() { } 2024-09-04
1139 How do you define a method in a class in C++? void myMethod() { } 2024-09-04
1140 How do you call a method from an instance in Python? obj.my_method() 2024-09-04
1141 How do you call a method from an instance in JavaScript? obj.myMethod(); 2024-09-04
1142 How do you call a method from an instance in Java? obj.myMethod(); 2024-09-04
1143 How do you call a method from an instance in C++? obj.myMethod(); 2024-09-04
1144 How do you handle exceptions in Python? try: # code except Exception as e: # handle 2024-09-04
1145 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle } 2024-09-04
1146 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle } 2024-09-04
1147 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { // handle } 2024-09-04
1148 How do you define a class variable in Python? class MyClass: class_var = 0 2024-09-04
1149 How do you define a static variable in JavaScript? class MyClass { static classVar = 0; } 2024-09-04
1150 How do you define a static variable in Java? public class MyClass { static int classVar = 0; } 2024-09-04
1151 How do you define a static member in C++? class MyClass { static int classVar; }; 2024-09-04
1152 How do you define a method with default arguments in Python? def my_method(arg1, arg2=default): pass 2024-09-04
1153 How do you define a method with default parameters in JavaScript? function myMethod(arg1, arg2 = default) {} 2024-09-04
1154 How do you define a method with default parameters in Java? public void myMethod(int arg1, int arg2) { } 2024-09-04
1155 How do you define a method with default arguments in C++? void myMethod(int arg1, int arg2 = default) {} 2024-09-04
1156 How do you create a tuple in Python? my_tuple = (1, 2, 3) 2024-09-04
1157 How do you create a tuple in JavaScript? const myTuple = [1, 2, 3]; 2024-09-04
1158 How do you create a tuple in Java? Java does not have a built-in tuple type; use a class or a list. 2024-09-04
1159 How do you create a tuple in C++? std::tuple myTuple(1, 2, 3); 2024-09-04
1160 How do you access elements in a tuple in Python? element = my_tuple[index] 2024-09-04
1161 How do you access elements in an array in JavaScript? let element = myArray[index]; 2024-09-04
1162 How do you access elements in a list in Java? element = list.get(index); 2024-09-04
1163 How do you access elements in a vector in C++? element = myVector[index]; 2024-09-04
1164 How do you convert a list to a set in Python? my_set = set(my_list) 2024-09-04
1165 How do you convert an array to a Set in JavaScript? let mySet = new Set(myArray); 2024-09-04
1166 How do you convert a list to a set in Java? import java.util.HashSet; Set mySet = new HashSet<>(myList); 2024-09-04
1167 How do you convert a vector to a set in C++? std::set mySet(myVector.begin(), myVector.end()); 2024-09-04
1168 How do you find the length of a list in Python? length = len(my_list) 2024-09-04
1169 How do you find the length of an array in JavaScript? let length = myArray.length; 2024-09-04
1170 How do you find the length of an ArrayList in Java? int length = list.size(); 2024-09-04
1171 How do you find the length of a vector in C++? int length = myVector.size(); 2024-09-04
1172 How do you sort a list in Python? my_list.sort() 2024-09-04
1173 How do you sort an array in JavaScript? myArray.sort(); 2024-09-04
1174 How do you sort an ArrayList in Java? Collections.sort(list); 2024-09-04
1175 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
1176 How do you convert a string to an integer in Python? integer = int(my_string) 2024-09-04
1177 How do you convert a string to an integer in JavaScript? let integer = parseInt(myString); 2024-09-04
1178 How do you convert a string to an integer in Java? int integer = Integer.parseInt(myString); 2024-09-04
1179 How do you convert a string to an integer in C++? int integer = std::stoi(myString); 2024-09-04
1180 How do you convert an integer to a string in Python? string = str(my_integer) 2024-09-04
1181 How do you convert an integer to a string in JavaScript? let string = myInteger.toString(); 2024-09-04
1182 How do you convert an integer to a string in Java? String string = Integer.toString(myInteger); 2024-09-04
1183 How do you convert an integer to a string in C++? std::string string = std::to_string(myInteger); 2024-09-04
1184 How do you check if a string contains a substring in Python? substring in my_string 2024-09-04
1185 How do you check if a string contains a substring in JavaScript? myString.includes(substring); 2024-09-04
1186 How do you check if a string contains a substring in Java? myString.contains(substring); 2024-09-04
1187 How do you check if a string contains a substring in C++? myString.find(substring) != std::string::npos; 2024-09-04
1188 How do you get the current date and time in Python? from datetime import datetime now = datetime.now() 2024-09-04
1189 How do you get the current date and time in JavaScript? let now = new Date(); 2024-09-04
1190 How do you get the current date and time in Java? LocalDateTime now = LocalDateTime.now(); 2024-09-04
1191 How do you get the current date and time in C++? #include std::time_t now = std::time(0); 2024-09-04
1192 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
1193 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello, World!") 2024-09-04
1194 How do you handle exceptions in Python? try: # code that may raise an exception except Exception as e: # handle the exception 2024-09-04
1195 How do you create a function in JavaScript? function myFunction() { // code } 2024-09-04
1196 How do you create a method in Java? public class MyClass { public void myMethod() { // code } } 2024-09-04
1197 How do you create a function in C++? void myFunction() { // code } 2024-09-04
1198 How do you create a function in Java? public int add(int a, int b) { return a + b; } 2024-09-04
1199 How do you create a lambda function in Python? lambda x: x * 2 2024-09-04
1200 How do you create a lambda function in JavaScript? (x => x * 2) 2024-09-04
1201 How do you create a lambda function in Java? interface MyFunction { int apply(int x); } MyFunction doubleIt = x -> x * 2; 2024-09-04
1202 How do you create a lambda function in C++? auto lambda = [](int x) { return x * 2; }; 2024-09-04
1203 How do you concatenate strings in Python? result = str1 + str2 2024-09-04
1204 How do you concatenate strings in JavaScript? let result = str1 + str2; 2024-09-04
1205 How do you concatenate strings in Java? String result = str1 + str2; 2024-09-04
1206 How do you concatenate strings in C++? std::string result = str1 + str2; 2024-09-04
1207 How do you iterate over a list in Python? for item in my_list: # process item 2024-09-04
1208 How do you iterate over an array in JavaScript? myArray.forEach(item => { // process item }); 2024-09-04
1209 How do you iterate over a list in Java? for (Type item : myList) { // process item } 2024-09-04
1210 How do you iterate over a vector in C++? for (const auto& item : myVector) { // process item } 2024-09-04
1211 How do you find an item in a list in Python? found = item in my_list 2024-09-04
1212 How do you find an item in an array in JavaScript? let found = myArray.includes(item); 2024-09-04
1213 How do you find an item in a list in Java? boolean found = myList.contains(item); 2024-09-04
1214 How do you find an item in a vector in C++? bool found = std::find(myVector.begin(), myVector.end(), item) != myVector.end(); 2024-09-04
1215 How do you remove an item from a list in Python? my_list.remove(item) 2024-09-04
1216 How do you remove an item from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
1217 How do you remove an item from a list in Java? myList.remove(item); 2024-09-04
1218 How do you remove an item from a vector in C++? myVector.erase(std::remove(myVector.begin(), myVector.end(), item), myVector.end()); 2024-09-04
1219 How do you sort a list in Python? my_list.sort() 2024-09-04
1220 How do you sort an array in JavaScript? myArray.sort(); 2024-09-04
1221 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
1222 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
1223 How do you generate a random number in Python? import random random_number = random.randint(1, 100) 2024-09-04
1224 How do you generate a random number in JavaScript? let randomNumber = Math.floor(Math.random() * 100) + 1; 2024-09-04
1225 How do you generate a random number in Java? import java.util.Random; Random rand = new Random(); int randomNumber = rand.nextInt(100) + 1; 2024-09-04
1226 How do you generate a random number in C++? #include int randomNumber = rand() % 100 + 1; 2024-09-04
1227 How do you perform integer division in Python? result = a // b 2024-09-04
1228 How do you perform integer division in JavaScript? let result = Math.floor(a / b); 2024-09-04
1229 How do you perform integer division in Java? int result = a / b; 2024-09-04
1230 How do you perform integer division in C++? int result = a / b; 2024-09-04
1231 How do you check if a number is even in Python? is_even = (number % 2 == 0) 2024-09-04
1232 How do you check if a number is even in JavaScript? let isEven = (number % 2 === 0); 2024-09-04
1233 How do you check if a number is even in Java? boolean isEven = (number % 2 == 0); 2024-09-04
1234 How do you check if a number is even in C++? bool isEven = (number % 2 == 0); 2024-09-04
1235 How do you reverse a string in Python? reversed_str = my_str[::-1] 2024-09-04
1236 How do you reverse a string in JavaScript? let reversedStr = myStr.split("").reverse().join(""); 2024-09-04
1237 How do you reverse a string in Java? String reversedStr = new StringBuilder(myStr).reverse().toString(); 2024-09-04
1238 How do you reverse a string in C++? std::reverse(myStr.begin(), myStr.end()); 2024-09-04
1239 How do you remove whitespace from a string in Python? clean_str = my_str.strip() 2024-09-04
1240 How do you remove whitespace from a string in JavaScript? let cleanStr = myStr.trim(); 2024-09-04
1241 How do you remove whitespace from a string in Java? String cleanStr = myStr.trim(); 2024-09-04
1242 How do you remove whitespace from a string in C++? std::string cleanStr = myStr; cleanStr.erase(cleanStr.find_last_not_of(" ") + 1, std::string::npos); cleanStr.erase(0, cleanStr.find_first_not_of(" ")); 2024-09-04
1243 How do you convert a string to an integer in Python? my_int = int(my_str) 2024-09-04
1244 How do you convert a string to an integer in JavaScript? let myInt = parseInt(myStr, 10); 2024-09-04
1245 How do you convert a string to an integer in Java? int myInt = Integer.parseInt(myStr); 2024-09-04
1246 How do you convert a string to an integer in C++? int myInt = std::stoi(myStr); 2024-09-04
1247 How do you convert an integer to a string in Python? my_str = str(my_int) 2024-09-04
1248 How do you convert an integer to a string in JavaScript? let myStr = myInt.toString(); 2024-09-04
1249 How do you convert an integer to a string in Java? String myStr = Integer.toString(myInt); 2024-09-04
1250 How do you convert an integer to a string in C++? std::string myStr = std::to_string(myInt); 2024-09-04
1251 How do you find the length of a string in Python? length = len(my_str) 2024-09-04
1252 How do you find the length of a string in JavaScript? let length = myStr.length; 2024-09-04
1253 How do you find the length of a string in Java? int length = myStr.length(); 2024-09-04
1254 How do you find the length of a string in C++? size_t length = myStr.size(); 2024-09-04
1255 How do you check if a string is empty in Python? is_empty = (my_str == "") 2024-09-04
1256 How do you check if a string is empty in JavaScript? let isEmpty = (myStr === ""); 2024-09-04
1257 How do you check if a string is empty in Java? boolean isEmpty = myStr.isEmpty(); 2024-09-04
1258 How do you check if a string is empty in C++? bool isEmpty = myStr.empty(); 2024-09-04
1259 How do you get a substring in Python? substring = my_str[start:end] 2024-09-04
1260 How do you get a substring in JavaScript? let substring = myStr.substring(start, end); 2024-09-04
1261 How do you get a substring in Java? String substring = myStr.substring(start, end); 2024-09-04
1262 How do you get a substring in C++? std::string substring = myStr.substr(start, length); 2024-09-04
1263 How do you find the index of a substring in Python? index = my_str.find("substring") 2024-09-04
1264 How do you find the index of a substring in JavaScript? let index = myStr.indexOf("substring"); 2024-09-04
1265 How do you find the index of a substring in Java? int index = myStr.indexOf("substring"); 2024-09-04
1266 How do you find the index of a substring in C++? size_t index = myStr.find("substring"); 2024-09-04
1267 How do you convert a list to a set in Python? my_set = set(my_list) 2024-09-04
1268 How do you convert an array to a set in JavaScript? let mySet = new Set(myArray); 2024-09-04
1269 How do you convert a list to a set in Java? Set mySet = new HashSet<>(myList); 2024-09-04
1270 How do you convert a vector to a set in C++? std::set mySet(myVector.begin(), myVector.end()); 2024-09-04
1271 How do you merge two lists in Python? merged_list = list1 + list2 2024-09-04
1272 How do you merge two arrays in JavaScript? let mergedArray = array1.concat(array2); 2024-09-04
1273 How do you merge two lists in Java? List mergedList = new ArrayList<>(list1); mergedList.addAll(list2); 2024-09-04
1274 How do you merge two vectors in C++? std::vector mergedVector = vector1; mergedVector.insert(mergedVector.end(), vector2.begin(), vector2.end()); 2024-09-04
1275 How do you remove duplicates from a list in Python? unique_list = list(set(my_list)) 2024-09-04
1276 How do you remove duplicates from an array in JavaScript? let uniqueArray = [...new Set(myArray)]; 2024-09-04
1277 How do you remove duplicates from a list in Java? Set uniqueSet = new HashSet<>(myList); List uniqueList = new ArrayList<>(uniqueSet); 2024-09-04
1278 How do you remove duplicates from a vector in C++? std::sort(myVector.begin(), myVector.end()); myVector.erase(std::unique(myVector.begin(), myVector.end()), myVector.end()); 2024-09-04
1279 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-04
1280 How do you find the maximum value in an array in JavaScript? let maxValue = Math.max(...myArray); 2024-09-04
1281 How do you find the maximum value in a list in Java? int maxValue = Collections.max(myList); 2024-09-04
1282 How do you find the maximum value in a vector in C++? int maxValue = *std::max_element(myVector.begin(), myVector.end()); 2024-09-04
1283 How do you find the minimum value in a list in Python? min_value = min(my_list) 2024-09-04
1284 How do you find the minimum value in an array in JavaScript? let minValue = Math.min(...myArray); 2024-09-04
1285 How do you find the minimum value in a list in Java? int minValue = Collections.min(myList); 2024-09-04
1286 How do you find the minimum value in a vector in C++? int minValue = *std::min_element(myVector.begin(), myVector.end()); 2024-09-04
1287 How do you check if an element exists in a list in Python? exists = element in my_list 2024-09-04
1288 How do you check if an element exists in an array in JavaScript? let exists = myArray.includes(element); 2024-09-04
1289 How do you check if an element exists in a list in Java? boolean exists = myList.contains(element); 2024-09-04
1290 How do you check if an element exists in a vector in C++? bool exists = (std::find(myVector.begin(), myVector.end(), element) != myVector.end()); 2024-09-04
1291 How do you calculate the length of an array in JavaScript? let length = myArray.length; 2024-09-04
1292 How do you calculate the length of a list in Python? length = len(my_list) 2024-09-04
1293 How do you calculate the length of a vector in C++? size_t length = myVector.size(); 2024-09-04
1294 How do you calculate the length of a list in Java? int length = myList.size(); 2024-09-04
1295 How do you find the average of a list in Python? average = sum(my_list) / len(my_list) 2024-09-04
1296 How do you find the average of an array in JavaScript? let average = myArray.reduce((a, b) => a + b, 0) / myArray.length; 2024-09-04
1297 How do you find the average of a list in Java? double average = myList.stream().mapToInt(Integer::intValue).average().orElse(0.0); 2024-09-04
1298 How do you find the average of a vector in C++? double average = std::accumulate(myVector.begin(), myVector.end(), 0.0) / myVector.size(); 2024-09-04
1299 How do you find the sum of all elements in a list in Python? total = sum(my_list) 2024-09-04
1300 How do you find the sum of all elements in an array in JavaScript? let total = myArray.reduce((a, b) => a + b, 0); 2024-09-04
1301 How do you find the sum of all elements in a list in Java? int total = myList.stream().mapToInt(Integer::intValue).sum(); 2024-09-04
1302 How do you find the sum of all elements in a vector in C++? int total = std::accumulate(myVector.begin(), myVector.end(), 0); 2024-09-04
1303 How do you sort a list in Python? my_list.sort() 2024-09-04
1304 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
1305 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
1306 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
1307 How do you reverse a list in Python? my_list.reverse() 2024-09-04
1308 How do you reverse an array in JavaScript? myArray.reverse() 2024-09-04
1309 How do you reverse a list in Java? Collections.reverse(myList); 2024-09-04
1310 How do you reverse a vector in C++? std::reverse(myVector.begin(), myVector.end()); 2024-09-04
1311 How do you remove the last element from a list in Python? my_list.pop() 2024-09-04
1312 How do you remove the last element from an array in JavaScript? myArray.pop() 2024-09-04
1313 How do you remove the last element from a list in Java? myList.remove(myList.size() - 1); 2024-09-04
1314 How do you remove the last element from a vector in C++? myVector.pop_back(); 2024-09-04
1315 How do you add an element to the end of a list in Python? my_list.append(element) 2024-09-04
1316 How do you add an element to the end of an array in JavaScript? myArray.push(element) 2024-09-04
1317 How do you add an element to the end of a list in Java? myList.add(element); 2024-09-04
1318 How do you add an element to the end of a vector in C++? myVector.push_back(element); 2024-09-04
1319 How do you check if a list contains a specific element in Python? contains = element in my_list 2024-09-04
1320 How do you check if an array contains a specific element in JavaScript? let contains = myArray.includes(element); 2024-09-04
1321 How do you check if a list contains a specific element in Java? boolean contains = myList.contains(element); 2024-09-04
1322 How do you check if a vector contains a specific element in C++? bool contains = (std::find(myVector.begin(), myVector.end(), element) != myVector.end()); 2024-09-04
1323 How do you find the maximum value in a dictionary in Python? max_value = max(my_dict.values()) 2024-09-04
1324 How do you find the maximum value in an object in JavaScript? let maxValue = Math.max(...Object.values(myObject)); 2024-09-04
1325 How do you find the maximum value in a map in Java? int maxValue = myMap.values().stream().mapToInt(Integer::intValue).max().orElseThrow(); 2024-09-04
1326 How do you find the maximum value in a map in C++? auto maxValue = std::max_element(myMap.begin(), myMap.end(), [](const auto& a, const auto& b) { return a.second < b.second; })->second; 2024-09-04
1327 How do you find the minimum value in a dictionary in Python? min_value = min(my_dict.values()) 2024-09-04
1328 How do you find the minimum value in an object in JavaScript? let minValue = Math.min(...Object.values(myObject)); 2024-09-04
1329 How do you find the minimum value in a map in Java? int minValue = myMap.values().stream().mapToInt(Integer::intValue).min().orElseThrow(); 2024-09-04
1330 How do you find the minimum value in a map in C++? auto minValue = std::min_element(myMap.begin(), myMap.end(), [](const auto& a, const auto& b) { return a.second < b.second; })->second; 2024-09-04
1331 How do you check if a key exists in a dictionary in Python? exists = key in my_dict 2024-09-04
1332 How do you check if a property exists in an object in JavaScript? let exists = myObject.hasOwnProperty(property); 2024-09-04
1333 How do you check if a key exists in a map in Java? boolean exists = myMap.containsKey(key); 2024-09-04
1334 How do you check if a key exists in a map in C++? bool exists = (myMap.find(key) != myMap.end()); 2024-09-04
1335 How do you get the keys of a dictionary in Python? keys = my_dict.keys() 2024-09-04
1336 How do you get the values of an object in JavaScript? let values = Object.values(myObject); 2024-09-04
1337 How do you get the values of a map in Java? Collection values = myMap.values(); 2024-09-04
1338 How do you get the values of a map in C++? std::vector values; for(const auto& pair : myMap) values.push_back(pair.second); 2024-09-04
1339 How do you get the keys of a dictionary in Python as a list? keys_list = list(my_dict.keys()) 2024-09-04
1340 How do you get the values of an object in JavaScript as an array? let valuesArray = Object.values(myObject); 2024-09-04
1341 How do you get the values of a map in Java as a list? List valuesList = new ArrayList<>(myMap.values()); 2024-09-04
1342 How do you get the keys of a map in C++ as a vector? std::vector keys; for(const auto& pair : myMap) keys.push_back(pair.first); 2024-09-04
1343 How do you filter elements in a list in Python? filtered_list = [x for x in my_list if condition(x)] 2024-09-04
1344 How do you filter elements in an array in JavaScript? let filteredArray = myArray.filter(element => condition(element)); 2024-09-04
1345 How do you filter elements in a list in Java? List filteredList = myList.stream().filter(element -> condition(element)).collect(Collectors.toList()); 2024-09-04
1346 How do you filter elements in a vector in C++? std::vector filteredVector; std::copy_if(myVector.begin(), myVector.end(), std::back_inserter(filteredVector), [](const Type& element) { return condition(element); }); 2024-09-04
1347 How do you find the index of an element in a list in Python? index = my_list.index(element) 2024-09-04
1348 How do you find the index of an element in an array in JavaScript? let index = myArray.indexOf(element); 2024-09-04
1349 How do you find the index of an element in a list in Java? int index = myList.indexOf(element); 2024-09-04
1350 How do you find the index of an element in a vector in C++? auto it = std::find(myVector.begin(), myVector.end(), element); int index = std::distance(myVector.begin(), it); 2024-09-04
1351 How do you get the length of a list in Python? length = len(my_list) 2024-09-04
1352 How do you get the length of an array in JavaScript? let length = myArray.length; 2024-09-04
1353 How do you get the size of a list in Java? int size = myList.size(); 2024-09-04
1354 How do you get the size of a vector in C++? int size = myVector.size(); 2024-09-04
1355 How do you check if a string contains a substring in Python? contains = substring in my_string 2024-09-04
1356 How do you check if a string contains a substring in JavaScript? let contains = myString.includes(substring); 2024-09-04
1357 How do you check if a string contains a substring in Java? boolean contains = myString.contains(substring); 2024-09-04
1358 How do you check if a string contains a substring in C++? bool contains = (myString.find(substring) != std::string::npos); 2024-09-04
1359 How do you replace a substring in a string in Python? new_string = my_string.replace(old_substring, new_substring) 2024-09-04
1360 How do you replace a substring in a string in JavaScript? let newString = myString.replace(oldSubstring, newSubstring); 2024-09-04
1361 How do you replace a substring in a string in Java? String newString = myString.replace(oldSubstring, newSubstring); 2024-09-04
1362 How do you replace a substring in a string in C++? std::string newString = myString; size_t pos = newString.find(oldSubstring); if(pos != std::string::npos) newString.replace(pos, oldSubstring.length(), newSubstring); 2024-09-04
1363 How do you convert a string to an integer in Python? integer = int(my_string) 2024-09-04
1364 How do you convert a string to an integer in JavaScript? let integer = parseInt(myString, 10); 2024-09-04
1365 How do you convert a string to an integer in Java? int integer = Integer.parseInt(myString); 2024-09-04
1366 How do you convert a string to an integer in C++? int integer = std::stoi(myString); 2024-09-04
1367 How do you convert an integer to a string in Python? string = str(integer) 2024-09-04
1368 How do you convert an integer to a string in JavaScript? let string = integer.toString(); 2024-09-04
1369 How do you convert an integer to a string in Java? String string = Integer.toString(integer); 2024-09-04
1370 How do you convert an integer to a string in C++? std::string string = std::to_string(integer); 2024-09-04
1371 How do you create a new file in Python? with open("filename.txt", "w") as file: file.write("content") 2024-09-04
1372 How do you create a new file in JavaScript (Node.js)? const fs = require("fs"); fs.writeFileSync("filename.txt", "content"); 2024-09-04
1373 How do you create a new file in Java? import java.io.*; FileWriter writer = new FileWriter("filename.txt"); writer.write("content"); writer.close(); 2024-09-04
1374 How do you create a new file in C++? #include std::ofstream file("filename.txt"); file << "content"; file.close(); 2024-09-04
1375 How do you read a file in Python? with open("filename.txt", "r") as file: content = file.read() 2024-09-04
1376 How do you read a file in JavaScript (Node.js)? const fs = require("fs"); const content = fs.readFileSync("filename.txt", "utf8"); 2024-09-04
1377 How do you read a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("filename.txt"))); 2024-09-04
1378 How do you read a file in C++? #include #include std::ifstream file("filename.txt"); std::string content; std::getline(file, content); file.close(); 2024-09-04
1379 How do you write to a file in Python? with open("filename.txt", "a") as file: file.write("content") 2024-09-04
1380 How do you write to a file in JavaScript (Node.js)? const fs = require("fs"); fs.appendFileSync("filename.txt", "content"); 2024-09-04
1381 How do you write to a file in Java? import java.io.*; FileWriter writer = new FileWriter("filename.txt", true); writer.write("content"); writer.close(); 2024-09-04
1382 How do you write to a file in C++? #include std::ofstream file("filename.txt", std::ios::app); file << "content"; file.close(); 2024-09-04
1383 How do you handle exceptions in Python? try: # code that may throw an exception except Exception as e: # handle exception 2024-09-04
1384 How do you handle exceptions in JavaScript? try { // code that may throw an exception } catch (e) { // handle exception } 2024-09-04
1385 How do you handle exceptions in Java? try { // code that may throw an exception } catch (Exception e) { // handle exception } 2024-09-04
1386 How do you handle exceptions in C++? try { // code that may throw an exception } catch (const std::exception& e) { // handle exception } 2024-09-04
1387 How do you create a class in Python? class MyClass: def __init__(self): # constructor code 2024-09-04
1388 How do you create a class in JavaScript? class MyClass { constructor() { // constructor code } } 2024-09-04
1389 How do you create a class in Java? public class MyClass { public MyClass() { // constructor code } } 2024-09-04
1390 How do you create a class in C++? class MyClass { public: MyClass() { // constructor code } }; 2024-09-04
1391 How do you add an element to a list in Python? my_list.append(element) 2024-09-04
1392 How do you add an element to an array in JavaScript? myArray.push(element); 2024-09-04
1393 How do you add an element to a list in Java? myList.add(element); 2024-09-04
1394 How do you add an element to a vector in C++? myVector.push_back(element); 2024-09-04
1395 How do you remove an element from a list in Python? my_list.remove(element) 2024-09-04
1396 How do you remove an element from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
1397 How do you remove an element from a list in Java? myList.remove(element); 2024-09-04
1398 How do you remove an element from a vector in C++? myVector.erase(it); 2024-09-04
1399 How do you sort a list in Python? my_list.sort() 2024-09-04
1400 How do you sort an array in JavaScript? myArray.sort(); 2024-09-04
1401 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
1402 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
1403 How do you reverse a list in Python? my_list.reverse() 2024-09-04
1404 How do you reverse an array in JavaScript? myArray.reverse(); 2024-09-04
1405 How do you reverse a list in Java? Collections.reverse(myList); 2024-09-04
1406 How do you reverse a vector in C++? std::reverse(myVector.begin(), myVector.end()); 2024-09-04
1407 How do you concatenate two strings in Python? result = str1 + str2 2024-09-04
1408 How do you concatenate two strings in JavaScript? let result = str1 + str2; 2024-09-04
1409 How do you concatenate two strings in Java? String result = str1 + str2; 2024-09-04
1410 How do you concatenate two strings in C++? std::string result = str1 + str2; 2024-09-04
1411 How do you check if a string contains a substring in Python? contains = substring in string 2024-09-04
1412 How do you check if a string contains a substring in JavaScript? let contains = string.includes(substring); 2024-09-04
1413 How do you check if a string contains a substring in Java? boolean contains = string.contains(substring); 2024-09-04
1414 How do you check if a string contains a substring in C++? bool contains = (string.find(substring) != std::string::npos); 2024-09-04
1415 How do you get the length of a string in Python? length = len(string) 2024-09-04
1416 How do you get the length of a string in JavaScript? let length = string.length; 2024-09-04
1417 How do you get the length of a string in Java? int length = string.length(); 2024-09-04
1418 How do you get the length of a string in C++? size_t length = string.length(); 2024-09-04
1419 How do you convert a string to an integer in Python? integer = int(string) 2024-09-04
1420 How do you convert a string to an integer in JavaScript? let integer = parseInt(string); 2024-09-04
1421 How do you convert a string to an integer in Java? int integer = Integer.parseInt(string); 2024-09-04
1422 How do you convert a string to an integer in C++? int integer = std::stoi(string); 2024-09-04
1423 How do you concatenate a list of strings in Python? result = "".join(list_of_strings) 2024-09-04
1424 How do you concatenate an array of strings in JavaScript? let result = arrayOfStrings.join(""); 2024-09-04
1425 How do you concatenate a list of strings in Java? String result = String.join("", listOfStrings); 2024-09-04
1426 How do you concatenate a vector of strings in C++? std::string result = std::accumulate(vectorOfStrings.begin(), vectorOfStrings.end(), std::string()); 2024-09-04
1427 How do you check if a list is empty in Python? is_empty = len(my_list) == 0 2024-09-04
1428 How do you check if an array is empty in JavaScript? let isEmpty = myArray.length === 0; 2024-09-04
1429 How do you check if a list is empty in Java? boolean isEmpty = myList.isEmpty(); 2024-09-04
1430 How do you check if a vector is empty in C++? bool isEmpty = myVector.empty(); 2024-09-04
1431 How do you get the current date and time in Python? from datetime import datetime now = datetime.now() 2024-09-04
1432 How do you get the current date and time in JavaScript? let now = new Date(); 2024-09-04
1433 How do you get the current date and time in Java? import java.time.LocalDateTime; LocalDateTime now = LocalDateTime.now(); 2024-09-04
1434 How do you get the current date and time in C++? #include #include std::time_t now = std::time(nullptr); std::tm* localTime = std::localtime(&now); 2024-09-04
1435 How do you create a function in Python? def my_function(): # function code 2024-09-04
1436 How do you create a function in JavaScript? function myFunction() { // function code } 2024-09-04
1437 How do you create a method in C++? class MyClass { public: void myMethod() { // method code } }; 2024-09-04
1438 How do you call a function in Python? my_function() 2024-09-04
1439 How do you call a function in JavaScript? myFunction(); 2024-09-04
1440 How do you call a method in Java? myObject.myMethod(); 2024-09-04
1441 How do you call a method in C++? myObject.myMethod(); 2024-09-04
1442 How do you declare a variable in Python? variable_name = value 2024-09-04
1443 How do you declare a variable in JavaScript? let variableName = value; 2024-09-04
1444 How do you declare a variable in Java? int variableName = value; 2024-09-04
1445 How do you declare a variable in C++? int variableName = value; 2024-09-04
1446 How do you perform integer division in Python? result = a // b 2024-09-04
1447 How do you perform integer division in JavaScript? let result = Math.floor(a / b); 2024-09-04
1448 How do you perform integer division in Java? int result = a / b; 2024-09-04
1449 How do you perform integer division in C++? int result = a / b; 2024-09-04
1450 How do you check for null in Python? is_null = variable is None 2024-09-04
1451 How do you check for null in JavaScript? let isNull = variable === null; 2024-09-04
1452 How do you check for null in Java? boolean isNull = (variable == null); 2024-09-04
1453 How do you check for null in C++? bool isNull = (variable == nullptr); 2024-09-04
1454 How do you iterate over a list in Python? for item in my_list: # process item 2024-09-04
1455 How do you iterate over an array in JavaScript? myArray.forEach(item => { // process item }); 2024-09-04
1456 How do you iterate over a list in Java? for (String item : myList) { // process item } 2024-09-04
1457 How do you iterate over a vector in C++? for (const auto& item : myVector) { // process item } 2024-09-04
1458 How do you create a new file in Python? with open("filename.txt", "w") as file: file.write("content") 2024-09-04
1459 How do you create a new file in JavaScript? const fs = require("fs"); fs.writeFile("filename.txt", "content", err => { if (err) throw err; }); 2024-09-04
1460 How do you create a new file in Java? import java.io.FileWriter; FileWriter writer = new FileWriter("filename.txt"); writer.write("content"); writer.close(); 2024-09-04
1461 How do you create a new file in C++? #include std::ofstream file("filename.txt"); file << "content"; file.close(); 2024-09-04
1462 How do you read from a file in Python? with open("filename.txt", "r") as file: content = file.read() 2024-09-04
1463 How do you read from a file in JavaScript? const fs = require("fs"); fs.readFile("filename.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
1464 How do you read from a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("filename.txt"))); 2024-09-04
1465 How do you read from a file in C++? #include std::ifstream file("filename.txt"); std::string content; std::getline(file, content); file.close(); 2024-09-04
1466 How do you handle exceptions in Python? try: # code that may raise an exception except Exception as e: # handle exception 2024-09-04
1467 How do you handle exceptions in JavaScript? try { // code that may throw an error } catch (error) { // handle error } 2024-09-04
1468 How do you handle exceptions in Java? try { // code that may throw an exception } catch (Exception e) { // handle exception } 2024-09-04
1469 How do you handle exceptions in C++? try { // code that may throw an exception } catch (const std::exception& e) { // handle exception } 2024-09-04
1470 How do you create a list in Python? my_list = [] 2024-09-04
1471 How do you create an array in JavaScript? let myArray = []; 2024-09-04
1472 How do you declare a constant in Python? CONSTANT_NAME = value 2024-09-04
1473 How do you declare a constant in JavaScript? const CONSTANT_NAME = value; 2024-09-04
1474 How do you declare a constant in Java? public static final TYPE CONSTANT_NAME = value; 2024-09-04
1475 How do you declare a constant in C++? const TYPE CONSTANT_NAME = value; 2024-09-04
1476 How do you create a class in Python? class MyClass: pass 2024-09-04
1477 How do you create a class in JavaScript? class MyClass { constructor() {} } 2024-09-04
1478 How do you create a class in Java? public class MyClass { // class body } 2024-09-04
1479 How do you create a class in C++? class MyClass { public: // class body }; 2024-09-04
1480 How do you create an instance of a class in Python? instance = MyClass() 2024-09-04
1481 How do you create an instance of a class in JavaScript? let instance = new MyClass(); 2024-09-04
1482 How do you create an instance of a class in Java? MyClass instance = new MyClass(); 2024-09-04
1483 How do you create an instance of a class in C++? MyClass instance; 2024-09-04
1484 How do you define a method in Python? def method_name(self): # method code 2024-09-04
1485 How do you define a method in JavaScript? method_name() { // method code } 2024-09-04
1486 How do you define a method in Java? public void methodName() { // method code } 2024-09-04
1487 How do you define a method in C++? void methodName() { // method code } 2024-09-04
1488 How do you access a class method in Python? instance.method_name() 2024-09-04
1489 How do you access a class method in JavaScript? instance.methodName(); 2024-09-04
1490 How do you access a class method in Java? instance.methodName(); 2024-09-04
1491 How do you access a class method in C++? instance.methodName(); 2024-09-04
1492 How do you handle input from the user in Python? input_value = input("Enter something: ") 2024-09-04
1493 How do you handle input from the user in JavaScript? let inputValue = prompt("Enter something:"); 2024-09-04
1494 How do you handle input from the user in Java? import java.util.Scanner; Scanner scanner = new Scanner(System.in); String input = scanner.nextLine(); 2024-09-04
1495 How do you handle input from the user in C++? #include std::string input; std::cin >> input; 2024-09-04
1496 How do you handle output in Python? print("Hello, World!") 2024-09-04
1497 How do you handle output in JavaScript? console.log("Hello, World!"); 2024-09-04
1498 How do you handle output in Java? System.out.println("Hello, World!"); 2024-09-04
1499 How do you handle output in C++? #include std::cout << "Hello, World!"; 2024-09-04
1500 How do you implement a loop in Python? for i in range(5): # loop code 2024-09-04
1501 How do you implement a loop in JavaScript? for (let i = 0; i < 5; i++) { // loop code } 2024-09-04
1502 How do you implement a loop in Java? for (int i = 0; i < 5; i++) { // loop code } 2024-09-04
1503 How do you implement a loop in C++? for (int i = 0; i < 5; i++) { // loop code } 2024-09-04
1504 How do you use a conditional statement in Python? if condition: # code 2024-09-04
1505 How do you use a conditional statement in JavaScript? if (condition) { // code } 2024-09-04
1506 How do you use a conditional statement in Java? if (condition) { // code } 2024-09-04
1507 How do you use a conditional statement in C++? if (condition) { // code } 2024-09-04
1508 How do you create a function in Python? def function_name(): # function code 2024-09-04
1509 How do you create a function in JavaScript? function functionName() { // function code } 2024-09-04
1510 How do you create a function in Java? public void functionName() { // function code } 2024-09-04
1511 How do you create a function in C++? returnType functionName() { // function code } 2024-09-04
1512 How do you import a module in Python? import module_name 2024-09-04
1513 How do you import a module in JavaScript? import moduleName from "module"; 2024-09-04
1514 How do you import a module in Java? import packageName.ClassName; 2024-09-04
1515 How do you include a header file in C++? #include "header.h" 2024-09-04
1516 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-04
1517 How do you create an object in JavaScript? let obj = { key: "value" }; 2024-09-04
1518 How do you create a map in Java? Map map = new HashMap<>(); 2024-09-04
1519 How do you create a map in C++? #include std::map myMap; 2024-09-04
1520 How do you access a dictionary value in Python? value = my_dict["key"] 2024-09-04
1521 How do you access an object property in JavaScript? let value = obj.key; 2024-09-04
1522 How do you access a map value in Java? ValueType value = map.get(key); 2024-09-04
1523 How do you access a map value in C++? ValueType value = myMap[key]; 2024-09-04
1524 How do you remove an item from a list in Python? my_list.remove(item) 2024-09-04
1525 How do you remove an item from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
1526 How do you remove an item from a list in Java? myList.remove(index); 2024-09-04
1527 How do you remove an item from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
1528 How do you check if a file exists in Python? import os os.path.isfile("filename.txt") 2024-09-04
1529 How do you check if a file exists in JavaScript? const fs = require("fs"); fs.existsSync("filename.txt"); 2024-09-04
1530 How do you check if a file exists in Java? File file = new File("filename.txt"); boolean exists = file.exists(); 2024-09-04
1531 How do you check if a file exists in C++? #include std::ifstream file("filename.txt"); bool exists = file.good(); 2024-09-04
1532 How do you get the current date and time in Python? from datetime import datetime now = datetime.now() 2024-09-04
1533 How do you get the current date and time in JavaScript? let now = new Date(); 2024-09-04
1534 How do you get the current date and time in Java? import java.time.LocalDateTime; LocalDateTime now = LocalDateTime.now(); 2024-09-04
1535 How do you get the current date and time in C++? #include std::time_t now = std::time(0); 2024-09-04
1536 How do you format a date in Python? from datetime import datetime formatted_date = now.strftime("%Y-%m-%d %H:%M:%S") 2024-09-04
1537 How do you format a date in JavaScript? let formattedDate = now.toISOString(); 2024-09-04
1538 How do you format a date in Java? import java.time.format.DateTimeFormatter; DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"); String formattedDate = now.format(formatter); 2024-09-04
1539 How do you format a date in C++? #include #include std::ostringstream oss; oss << std::put_time(std::localtime(&now), "%Y-%m-%d %H:%M:%S"); std::string formattedDate = oss.str(); 2024-09-04
1540 How do you create a new file in Python? with open("newfile.txt", "w") as file: file.write("Hello, World!") 2024-09-04
1541 How do you create a new file in JavaScript? const fs = require("fs"); fs.writeFileSync("newfile.txt", "Hello, World!"); 2024-09-04
1542 How do you create a new file in Java? import java.io.FileWriter; FileWriter writer = new FileWriter("newfile.txt"); writer.write("Hello, World!"); writer.close(); 2024-09-04
1543 How do you create a new file in C++? #include std::ofstream file("newfile.txt"); file << "Hello, World!"; 2024-09-04
1544 How do you update a file in Python? with open("file.txt", "a") as file: file.write("New content") 2024-09-04
1545 How do you update a file in JavaScript? const fs = require("fs"); fs.appendFileSync("file.txt", "New content"); 2024-09-04
1546 How do you update a file in Java? import java.io.FileWriter; FileWriter writer = new FileWriter("file.txt", true); writer.write("New content"); writer.close(); 2024-09-04
1547 How do you update a file in C++? #include std::ofstream file("file.txt", std::ios::app); file << "New content"; 2024-09-04
1548 How do you delete a file in Python? import os os.remove("file.txt") 2024-09-04
1549 How do you delete a file in JavaScript? const fs = require("fs"); fs.unlinkSync("file.txt"); 2024-09-04
1550 How do you delete a file in Java? import java.nio.file.Files; import java.nio.file.Paths; Files.delete(Paths.get("file.txt")); 2024-09-04
1551 How do you delete a file in C++? #include std::remove("file.txt"); 2024-09-04
1552 How do you create a thread in Python? import threading thread = threading.Thread(target=func) thread.start() 2024-09-04
1553 How do you create a thread in JavaScript? function run() {} new Worker("script.js"); 2024-09-04
1554 How do you create a thread in Java? new Thread(new Runnable() { public void run() { // thread code } }).start(); 2024-09-04
1555 How do you create a thread in C++? #include std::thread t([]() { // thread code }); t.join(); 2024-09-04
1556 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-04
1557 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle exception } 2024-09-04
1558 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-04
1559 How do you handle exceptions in C++? #include try { // code } catch (const std::exception& e) { // handle exception } 2024-09-04
1560 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
1561 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
1562 How do you read a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("file.txt"))); 2024-09-04
1563 How do you read a file in C++? #include #include std::ifstream file("file.txt"); std::string content; std::getline(file, content); 2024-09-04
1564 How do you create a directory in Python? import os os.makedirs("new_directory") 2024-09-04
1565 How do you create a directory in JavaScript? const fs = require("fs"); fs.mkdirSync("new_directory"); 2024-09-04
1566 How do you create a directory in Java? import java.io.File; File directory = new File("new_directory"); directory.mkdir(); 2024-09-04
1567 How do you create a directory in C++? #include namespace fs = std::filesystem; fs::create_directory("new_directory"); 2024-09-04
1568 How do you list files in a directory in Python? import os files = os.listdir("directory_path") 2024-09-04
1569 How do you list files in a directory in JavaScript? const fs = require("fs"); fs.readdir("directory_path", (err, files) => { if (err) throw err; console.log(files); }); 2024-09-04
1570 How do you list files in a directory in Java? import java.io.File; File folder = new File("directory_path"); File[] listOfFiles = folder.listFiles(); 2024-09-04
1571 How do you list files in a directory in C++? #include namespace fs = std::filesystem; for (const auto & entry : fs::directory_iterator("directory_path")) std::cout << entry.path() << std::endl; 2024-09-04
1572 How do you delete a directory in Python? import shutil shutil.rmtree("directory_path") 2024-09-04
1573 How do you delete a directory in JavaScript? const fs = require("fs"); fs.rmdir("directory_path", { recursive: true }, (err) => { if (err) throw err; }); 2024-09-04
1574 How do you delete a directory in Java? import java.io.File; File directory = new File("directory_path"); if (directory.isDirectory()) { for (File file : directory.listFiles()) { file.delete(); } directory.delete(); } 2024-09-04
1575 How do you delete a directory in C++? #include namespace fs = std::filesystem; fs::remove_all("directory_path"); 2024-09-04
1576 How do you convert a string to an integer in Python? number = int("123") 2024-09-04
1577 How do you convert a string to an integer in JavaScript? let number = parseInt("123"); 2024-09-04
1578 How do you convert a string to an integer in Java? int number = Integer.parseInt("123"); 2024-09-04
1579 How do you convert a string to an integer in C++? #include int number = std::stoi("123"); 2024-09-04
1580 How do you convert an integer to a string in Python? string = str(123) 2024-09-04
1581 How do you convert an integer to a string in JavaScript? let string = 123.toString(); 2024-09-04
1582 How do you convert an integer to a string in Java? String string = Integer.toString(123); 2024-09-04
1583 How do you convert an integer to a string in C++? #include std::string string = std::to_string(123); 2024-09-04
1584 How do you concatenate strings in Python? result = "Hello " + "World" 2024-09-04
1585 How do you concatenate strings in JavaScript? let result = "Hello " + "World"; 2024-09-04
1586 How do you concatenate strings in Java? String result = "Hello " + "World"; 2024-09-04
1587 How do you concatenate strings in C++? #include std::string result = "Hello " + "World"; 2024-09-04
1588 How do you check if a string contains a substring in Python? "substring" in "string" 2024-09-04
1589 How do you check if a string contains a substring in JavaScript? "string".includes("substring") 2024-09-04
1590 How do you check if a string contains a substring in Java? "string".contains("substring") 2024-09-04
1591 How do you check if a string contains a substring in C++? #include std::string str = "string"; if (str.find("substring") != std::string::npos) { // contains substring } 2024-09-04
1592 How do you split a string in Python? result = "string".split("delimiter") 2024-09-04
1593 How do you split a string in JavaScript? let result = "string".split("delimiter"); 2024-09-04
1594 How do you split a string in Java? String[] result = "string".split("delimiter"); 2024-09-04
1595 How do you split a string in C++? #include std::string str = "string"; std::stringstream ss(str); std::string token; while (std::getline(ss, token, 'delimiter')) { // process token } 2024-09-04
1596 How do you convert a string to lowercase in Python? result = "string".lower() 2024-09-04
1597 How do you convert a string to lowercase in JavaScript? let result = "string".toLowerCase(); 2024-09-04
1598 How do you convert a string to lowercase in Java? String result = "string".toLowerCase(); 2024-09-04
1599 How do you convert a string to lowercase in C++? #include #include std::string result = "string"; std::transform(result.begin(), result.end(), result.begin(), ::tolower); 2024-09-04
1600 How do you convert a string to uppercase in Python? result = "string".upper() 2024-09-04
1601 How do you convert a string to uppercase in JavaScript? let result = "string".toUpperCase(); 2024-09-04
1602 How do you convert a string to uppercase in Java? String result = "string".toUpperCase(); 2024-09-04
1603 How do you convert a string to uppercase in C++? #include #include std::string result = "string"; std::transform(result.begin(), result.end(), result.begin(), ::toupper); 2024-09-04
1604 How do you get the length of a string in Python? length = len("string") 2024-09-04
1605 How do you get the length of a string in JavaScript? let length = "string".length; 2024-09-04
1606 How do you get the length of a string in Java? int length = "string".length(); 2024-09-04
1607 How do you get the length of a string in C++? #include std::string str = "string"; std::size_t length = str.length(); 2024-09-04
1608 How do you replace a substring in Python? result = "string".replace("old", "new") 2024-09-04
1609 How do you replace a substring in JavaScript? let result = "string".replace("old", "new"); 2024-09-04
1610 How do you replace a substring in Java? String result = "string".replace("old", "new"); 2024-09-04
1611 How do you replace a substring in C++? #include std::string str = "string"; std::size_t pos = str.find("old"); if (pos != std::string::npos) { str.replace(pos, 3, "new"); } 2024-09-04
1612 How do you check if a string is empty in Python? if not "string": print("Empty") 2024-09-04
1613 How do you check if a string is empty in JavaScript? if ("string".length === 0) { console.log("Empty"); } 2024-09-04
1614 How do you check if a string is empty in Java? if ("string".isEmpty()) { System.out.println("Empty"); } 2024-09-04
1615 How do you check if a string is empty in C++? #include std::string str = ""; if (str.empty()) { // Empty } 2024-09-04
1616 How do you get a substring in Python? substring = "string"[start:end] 2024-09-04
1617 How do you get a substring in JavaScript? let substring = "string".substring(start, end); 2024-09-04
1618 How do you get a substring in Java? String substring = "string".substring(start, end); 2024-09-04
1619 How do you get a substring in C++? #include std::string str = "string"; std::string substring = str.substr(start, length); 2024-09-04
1620 How do you remove whitespace from a string in Python? result = " string ".strip() 2024-09-04
1621 How do you remove whitespace from a string in JavaScript? let result = " string ".trim(); 2024-09-04
1622 How do you remove whitespace from a string in Java? String result = " string ".trim(); 2024-09-04
1623 How do you remove whitespace from a string in C++? #include #include std::string str = " string "; str.erase(str.begin(), std::find_if_not(str.begin(), str.end(), ::isspace)); str.erase(std::find_if_not(str.rbegin(), str.rend(), ::isspace).base(), str.end()); 2024-09-04
1624 How do you find the index of a substring in Python? index = "string".find("substring") 2024-09-04
1625 How do you find the index of a substring in JavaScript? let index = "string".indexOf("substring"); 2024-09-04
1626 How do you find the index of a substring in Java? int index = "string".indexOf("substring"); 2024-09-04
1627 How do you find the index of a substring in C++? #include std::string str = "string"; std::size_t index = str.find("substring"); 2024-09-04
1628 How do you handle exceptions in Python? try: # code that may raise an exception except ExceptionType as e: # handle exception 2024-09-04
1629 How do you handle exceptions in JavaScript? try { // code that may throw an error } catch (e) { // handle error } 2024-09-04
1630 How do you handle exceptions in Java? try { // code that may throw an exception } catch (ExceptionType e) { // handle exception } 2024-09-04
1631 How do you handle exceptions in C++? #include try { // code that may throw an exception } catch (const std::exception& e) { // handle exception } 2024-09-04
1632 How do you create a class in Python? class MyClass: def __init__(self, value): self.value = value 2024-09-04
1633 How do you create a class in JavaScript? class MyClass { constructor(value) { this.value = value; } } 2024-09-04
1634 How do you create a class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } } 2024-09-04
1635 How do you create a class in C++? #include class MyClass { private: int value; public: MyClass(int value) : value(value) {} }; 2024-09-04
1636 How do you inherit a class in Python? class SubClass(MyClass): def __init__(self, value, extra): super().__init__(value) self.extra = extra 2024-09-04
1637 How do you inherit a class in JavaScript? class SubClass extends MyClass { constructor(value, extra) { super(value); this.extra = extra; } } 2024-09-04
1638 How do you inherit a class in Java? public class SubClass extends MyClass { private int extra; public SubClass(int value, int extra) { super(value); this.extra = extra; } } 2024-09-04
1639 How do you inherit a class in C++? #include class SubClass : public MyClass { private: int extra; public: SubClass(int value, int extra) : MyClass(value), extra(extra) {} }; 2024-09-04
1640 How do you override a method in Python? class MyClass: def my_method(self): return "original" class SubClass(MyClass): def my_method(self): return "overridden" 2024-09-04
1641 How do you override a method in JavaScript? class MyClass { myMethod() { return "original"; } } class SubClass extends MyClass { myMethod() { return "overridden"; } } 2024-09-04
1642 How do you override a method in Java? public class MyClass { public String myMethod() { return "original"; } } public class SubClass extends MyClass { @Override public String myMethod() { return "overridden"; } } 2024-09-04
1643 How do you override a method in C++? #include class MyClass { public: virtual std::string myMethod() { return "original"; } }; class SubClass : public MyClass { public: std::string myMethod() override { return "overridden"; } }; 2024-09-04
1644 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
1645 How do you create a list in JavaScript? let myList = [1, 2, 3]; 2024-09-04
1646 How do you create a list in Java? import java.util.ArrayList; ArrayList myList = new ArrayList<>(); myList.add(1); myList.add(2); myList.add(3); 2024-09-04
1647 How do you create a list in C++? #include std::vector myList = {1, 2, 3}; 2024-09-04
1648 How do you access an element in a list in Python? element = my_list[0] 2024-09-04
1649 How do you access an element in a list in JavaScript? let element = myList[0]; 2024-09-04
1650 How do you access an element in a list in Java? int element = myList.get(0); 2024-09-04
1651 How do you access an element in a list in C++? int element = myList[0]; 2024-09-04
1652 How do you add an element to a list in Python? my_list.append(4) 2024-09-04
1653 How do you add an element to a list in JavaScript? myList.push(4); 2024-09-04
1654 How do you add an element to a list in Java? myList.add(4); 2024-09-04
1655 How do you add an element to a list in C++? myList.push_back(4); 2024-09-04
1656 How do you remove an element from a list in Python? my_list.remove(2) 2024-09-04
1657 How do you remove an element from a list in JavaScript? myList.splice(0, 1); 2024-09-04
1658 How do you remove an element from a list in Java? myList.remove(0); 2024-09-04
1659 How do you remove an element from a list in C++? myList.erase(myList.begin()); 2024-09-04
1660 How do you sort a list in Python? my_list.sort() 2024-09-04
1661 How do you sort a list in JavaScript? myList.sort(); 2024-09-04
1662 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
1663 How do you sort a list in C++? #include std::sort(myList.begin(), myList.end()); 2024-09-04
1664 How do you find the length of a list in Python? length = len(my_list) 2024-09-04
1665 How do you find the length of a list in JavaScript? let length = myList.length; 2024-09-04
1666 How do you find the length of a list in Java? int length = myList.size(); 2024-09-04
1667 How do you find the length of a list in C++? int length = myList.size(); 2024-09-04
1668 How do you check if a list is empty in Python? if not my_list: print("Empty") 2024-09-04
1669 How do you check if a list is empty in JavaScript? if (myList.length === 0) { console.log("Empty"); } 2024-09-04
1670 How do you check if a list is empty in Java? if (myList.isEmpty()) { System.out.println("Empty"); } 2024-09-04
1671 How do you check if a list is empty in C++? if (myList.empty()) { std::cout << "Empty"; } 2024-09-04
1672 How do you concatenate two lists in Python? result = list1 + list2 2024-09-04
1673 How do you concatenate two lists in JavaScript? let result = list1.concat(list2); 2024-09-04
1674 How do you concatenate two lists in Java? myList.addAll(anotherList); 2024-09-04
1675 How do you concatenate two lists in C++? #include myList.insert(myList.end(), anotherList.begin(), anotherList.end()); 2024-09-04
1676 How do you find an element in a list in Python? index = my_list.index(2) 2024-09-04
1677 How do you find an element in a list in JavaScript? let index = myList.indexOf(2); 2024-09-04
1678 How do you find an element in a list in Java? int index = myList.indexOf(2); 2024-09-04
1679 How do you find an element in a list in C++? auto it = std::find(myList.begin(), myList.end(), 2); if (it != myList.end()) { int index = std::distance(myList.begin(), it); } 2024-09-04
1680 How do you reverse a list in Python? my_list.reverse() 2024-09-04
1681 How do you reverse a list in JavaScript? myList.reverse(); 2024-09-04
1682 How do you reverse a list in Java? Collections.reverse(myList); 2024-09-04
1683 How do you reverse a list in C++? #include std::reverse(myList.begin(), myList.end()); 2024-09-04
1684 How do you check if an element is in a list in Python? if 2 in my_list: print("Found") 2024-09-04
1685 How do you check if an element is in a list in JavaScript? if (myList.includes(2)) { console.log("Found"); } 2024-09-04
1686 How do you check if an element is in a list in Java? if (myList.contains(2)) { System.out.println("Found"); } 2024-09-04
1687 How do you check if an element is in a list in C++? if (std::find(myList.begin(), myList.end(), 2) != myList.end()) { std::cout << "Found"; } 2024-09-04
1688 How do you get a sublist in Python? sub_list = my_list[1:3] 2024-09-04
1689 How do you get a sublist in JavaScript? let subList = myList.slice(1, 3); 2024-09-04
1690 How do you get a sublist in Java? List subList = myList.subList(1, 3); 2024-09-04
1691 How do you get a sublist in C++? std::vector subList(myList.begin() + 1, myList.begin() + 3); 2024-09-04
1692 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-04
1693 How do you find the maximum value in a list in JavaScript? let maxValue = Math.max(...myList); 2024-09-04
1694 How do you find the maximum value in a list in Java? int maxValue = Collections.max(myList); 2024-09-04
1695 How do you find the maximum value in a list in C++? int maxValue = *std::max_element(myList.begin(), myList.end()); 2024-09-04
1696 How do you find the minimum value in a list in Python? min_value = min(my_list) 2024-09-04
1697 How do you find the minimum value in a list in JavaScript? let minValue = Math.min(...myList); 2024-09-04
1698 How do you find the minimum value in a list in Java? int minValue = Collections.min(myList); 2024-09-04
1699 How do you find the minimum value in a list in C++? int minValue = *std::min_element(myList.begin(), myList.end()); 2024-09-04
1700 How do you check if a list contains duplicates in Python? has_duplicates = len(my_list) != len(set(my_list)) 2024-09-04
1701 How do you check if a list contains duplicates in JavaScript? let hasDuplicates = new Set(myList).size !== myList.length; 2024-09-04
1702 How do you check if a list contains duplicates in Java? boolean hasDuplicates = myList.size() != new HashSet<>(myList).size(); 2024-09-04
1703 How do you check if a list contains duplicates in C++? #include bool hasDuplicates = myList.size() != std::unordered_set(myList.begin(), myList.end()).size(); 2024-09-04
1704 How do you find the sum of elements in a list in Python? total_sum = sum(my_list) 2024-09-04
1705 How do you find the sum of elements in a list in JavaScript? let totalSum = myList.reduce((a, b) => a + b, 0); 2024-09-04
1706 How do you find the sum of elements in a list in Java? int totalSum = myList.stream().mapToInt(Integer::intValue).sum(); 2024-09-04
1707 How do you find the sum of elements in a list in C++? int totalSum = std::accumulate(myList.begin(), myList.end(), 0); 2024-09-04
1708 How do you perform a linear search in Python? def linear_search(my_list, target): for index, value in enumerate(my_list): if value == target: return index return -1 2024-09-04
1709 How do you perform a linear search in JavaScript? function linearSearch(list, target) { for (let i = 0; i < list.length; i++) { if (list[i] === target) { return i; } } return -1; } 2024-09-04
1710 How do you perform a linear search in Java? public static int linearSearch(List list, int target) { for (int i = 0; i < list.size(); i++) { if (list.get(i) == target) { return i; } } return -1; } 2024-09-04
1711 How do you perform a linear search in C++? #include int linearSearch(const std::vector& list, int target) { auto it = std::find(list.begin(), list.end(), target); return it != list.end() ? std::distance(list.begin(), it) : -1; } 2024-09-04
1712 How do you perform a binary search in Python? def binary_search(my_list, target): left, right = 0, len(my_list) - 1 while left <= right: mid = (left + right) // 2 if my_list[mid] == target: return mid elif my_list[mid] < target: left = mid + 1 else: right = mid - 1 return -1 2024-09-04
1713 How do you perform a binary search in JavaScript? function binarySearch(list, target) { let left = 0, right = list.length - 1; while (left <= right) { const mid = Math.floor((left + right) / 2); if (list[mid] === target) { return mid; } else if (list[mid] < target) { left = mid + 1; } else { right = mid - 1; } } return -1; } 2024-09-04
1714 How do you perform a binary search in Java? public static int binarySearch(List list, int target) { int left = 0, right = list.size() - 1; while (left <= right) { int mid = (left + right) / 2; if (list.get(mid) == target) { return mid; } else if (list.get(mid) < target) { left = mid + 1; } else { right = mid - 1; } } return -1; } 2024-09-04
1715 How do you perform a binary search in C++? #include int binarySearch(const std::vector& list, int target) { int left = 0, right = list.size() - 1; while (left <= right) { int mid = (left + right) / 2; if (list[mid] == target) { return mid; } else if (list[mid] < target) { left = mid + 1; } else { right = mid - 1; } } return -1; } 2024-09-04
1716 How do you create a class in Python? class MyClass: def __init__(self, value): self.value = value 2024-09-04
1717 How do you create a class in JavaScript? class MyClass { constructor(value) { this.value = value; } } 2024-09-04
1718 How do you create a class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } } 2024-09-04
1719 How do you create a class in C++? class MyClass { int value; public: MyClass(int value) : value(value) {} }; 2024-09-04
1720 How do you create a function in Python? def my_function(param): return param 2024-09-04
1721 How do you create a function in JavaScript? function myFunction(param) { return param; } 2024-09-04
1722 How do you create a function in Java? public int myFunction(int param) { return param; } 2024-09-04
1723 How do you create a function in C++? int myFunction(int param) { return param; } 2024-09-04
1724 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-04
1725 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle exception } 2024-09-04
1726 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-04
1727 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { // handle exception } 2024-09-04
1728 How do you open a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
1729 How do you open a file in JavaScript (Node.js)? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
1730 How do you open a file in Java? import java.nio.file.Files; import java.nio.file.Paths; byte[] bytes = Files.readAllBytes(Paths.get("file.txt")); 2024-09-04
1731 How do you open a file in C++? #include std::ifstream file("file.txt"); std::string content; file >> content; 2024-09-04
1732 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello, world!") 2024-09-04
1733 How do you write to a file in JavaScript (Node.js)? const fs = require("fs"); fs.writeFile("file.txt", "Hello, world!", (err) => { if (err) throw err; console.log("File written!"); }); 2024-09-04
1734 How do you write to a file in Java? import java.io.FileWriter; import java.io.IOException; try (FileWriter writer = new FileWriter("file.txt")) { writer.write("Hello, world!"); } catch (IOException e) { e.printStackTrace(); } 2024-09-04
1735 How do you write to a file in C++? #include std::ofstream file("file.txt"); file << "Hello, world!"; 2024-09-04
1736 How do you sort a list in Python? my_list.sort() 2024-09-04
1737 How do you sort a list in JavaScript? myList.sort() 2024-09-04
1738 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
1739 How do you sort a list in C++? #include std::sort(myList.begin(), myList.end()); 2024-09-04
1740 How do you find the length of a list in Python? length = len(my_list) 2024-09-04
1741 How do you find the length of an array in JavaScript? length = myArray.length 2024-09-04
1742 How do you find the length of a list in Java? int length = myList.size(); 2024-09-04
1743 How do you find the length of a vector in C++? int length = myVector.size(); 2024-09-04
1744 How do you check if a list is empty in Python? if not my_list: 2024-09-04
1745 How do you check if an array is empty in JavaScript? if (myArray.length === 0) { /* empty */ } 2024-09-04
1746 How do you check if a list is empty in Java? if (myList.isEmpty()) { /* empty */ } 2024-09-04
1747 How do you check if a vector is empty in C++? if (myVector.empty()) { /* empty */ } 2024-09-04
1748 How do you append an item to a list in Python? my_list.append(item) 2024-09-04
1749 How do you append an item to an array in JavaScript? myArray.push(item) 2024-09-04
1750 How do you add an item to a list in Java? myList.add(item); 2024-09-04
1751 How do you add an item to a vector in C++? myVector.push_back(item); 2024-09-04
1752 How do you remove an item from a list in Python? my_list.remove(item) 2024-09-04
1753 How do you remove an item from an array in JavaScript? myArray.splice(index, 1) 2024-09-04
1754 How do you remove an item from a list in Java? myList.remove(item); 2024-09-04
1755 How do you remove an item from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
1756 How do you concatenate strings in Python? result = str1 + str2 2024-09-04
1757 How do you concatenate strings in JavaScript? let result = str1 + str2; 2024-09-04
1758 How do you concatenate strings in Java? String result = str1 + str2; 2024-09-04
1759 How do you concatenate strings in C++? std::string result = str1 + str2; 2024-09-04
1760 How do you check for a substring in Python? if substring in string: 2024-09-04
1761 How do you check for a substring in JavaScript? if (string.includes(substring)) { /* found */ } 2024-09-04
1762 How do you check for a substring in Java? if (string.contains(substring)) { /* found */ } 2024-09-04
1763 How do you check for a substring in C++? if (string.find(substring) != std::string::npos) { /* found */ } 2024-09-04
1764 How do you reverse a list in Python? my_list.reverse() 2024-09-04
1765 How do you reverse an array in JavaScript? myArray.reverse() 2024-09-04
1766 How do you reverse a list in Java? Collections.reverse(myList); 2024-09-04
1767 How do you reverse a vector in C++? #include std::reverse(myVector.begin(), myVector.end()); 2024-09-04
1768 How do you check if a number is prime in Python? def is_prime(n): if n <= 1: return False for i in range(2, int(n**0.5) + 1): if n % i == 0: return False return True 2024-09-04
1769 How do you check if a number is prime in Python? def is_prime(n): if n <= 1: return False for i in range(2, int(n**0.5) + 1): if n % i == 0: return False return True 2024-09-04
1770 How do you check if a number is prime in JavaScript? function isPrime(n) { if (n <= 1) return false; for (let i = 2; i <= Math.sqrt(n); i++) { if (n % i === 0) return false; } return true; } 2024-09-04
1771 How do you check if a number is prime in Java? public boolean isPrime(int n) { if (n <= 1) return false; for (int i = 2; i <= Math.sqrt(n); i++) { if (n % i == 0) return false; } return true; } 2024-09-04
1772 How do you check if a number is prime in C++? bool isPrime(int n) { if (n <= 1) return false; for (int i = 2; i <= sqrt(n); i++) { if (n % i == 0) return false; } return true; } 2024-09-04
1773 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-04
1774 How do you find the maximum value in an array in JavaScript? let max = Math.max(...myArray); 2024-09-04
1775 How do you find the maximum value in a list in Java? int max = Collections.max(myList); 2024-09-04
1776 How do you find the maximum value in a vector in C++? int max = *std::max_element(myVector.begin(), myVector.end()); 2024-09-04
1777 How do you find the minimum value in a list in Python? min_value = min(my_list) 2024-09-04
1778 How do you find the minimum value in an array in JavaScript? let min = Math.min(...myArray); 2024-09-04
1779 How do you find the minimum value in a list in Java? int min = Collections.min(myList); 2024-09-04
1780 How do you find the minimum value in a vector in C++? int min = *std::min_element(myVector.begin(), myVector.end()); 2024-09-04
1781 How do you reverse a string in Python? reversed_str = my_str[::-1] 2024-09-04
1782 How do you reverse a string in JavaScript? let reversedStr = myStr.split("").reverse().join(""); 2024-09-04
1783 How do you reverse a string in Java? public String reverse(String str) { return new StringBuilder(str).reverse().toString(); } 2024-09-04
1784 How do you reverse a string in C++? std::reverse(myStr.begin(), myStr.end()); 2024-09-04
1785 How do you check if a list contains a value in Python? if value in my_list: 2024-09-04
1786 How do you check if an array contains a value in JavaScript? if (myArray.includes(value)) { /* found */ } 2024-09-04
1787 How do you check if a list contains a value in Java? if (myList.contains(value)) { /* found */ } 2024-09-04
1788 How do you check if a vector contains a value in C++? if (std::find(myVector.begin(), myVector.end(), value) != myVector.end()) { /* found */ } 2024-09-04
1789 How do you count occurrences of a value in a list in Python? count = my_list.count(value) 2024-09-04
1790 How do you count occurrences of a value in an array in JavaScript? let count = myArray.filter(x => x === value).length; 2024-09-04
1791 How do you count occurrences of a value in a list in Java? int count = Collections.frequency(myList, value); 2024-09-04
1792 How do you count occurrences of a value in a vector in C++? int count = std::count(myVector.begin(), myVector.end(), value); 2024-09-04
1793 How do you remove duplicates from a list in Python? unique_list = list(set(my_list)) 2024-09-04
1794 How do you remove duplicates from an array in JavaScript? let uniqueArray = [...new Set(myArray)]; 2024-09-04
1795 How do you remove duplicates from a list in Java? List uniqueList = myList.stream().distinct().collect(Collectors.toList()); 2024-09-04
1796 How do you remove duplicates from a vector in C++? #include std::sort(myVector.begin(), myVector.end()); auto last = std::unique(myVector.begin(), myVector.end()); myVector.erase(last, myVector.end()); 2024-09-04
1797 How do you sort a list in Python? my_list.sort() 2024-09-04
1798 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
1799 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
1800 How do you sort a vector in C++? #include std::sort(myVector.begin(), myVector.end()); 2024-09-04
1801 How do you find the index of an element in a list in Python? index = my_list.index(value) 2024-09-04
1802 How do you find the index of an element in an array in JavaScript? let index = myArray.indexOf(value); 2024-09-04
1803 How do you find the index of an element in a list in Java? int index = myList.indexOf(value); 2024-09-04
1804 How do you find the index of an element in a vector in C++? auto it = std::find(myVector.begin(), myVector.end(), value); if (it != myVector.end()) { int index = std::distance(myVector.begin(), it); } 2024-09-04
1805 How do you create a new list from an existing list with elements greater than a certain value in Python? new_list = [x for x in my_list if x > value] 2024-09-04
1806 How do you create a new array from an existing array with elements greater than a certain value in JavaScript? let newArray = myArray.filter(x => x > value); 2024-09-04
1807 How do you create a new list from an existing list with elements greater than a certain value in Java? List newList = myList.stream().filter(x -> x > value).collect(Collectors.toList()); 2024-09-04
1808 How do you create a new vector from an existing vector with elements greater than a certain value in C++? std::vector newVector; std::copy_if(myVector.begin(), myVector.end(), std::back_inserter(newVector), [value](int x) { return x > value; }); 2024-09-04
1809 How do you convert a string to an integer in Python? int_value = int(my_str) 2024-09-04
1810 How do you convert a string to an integer in JavaScript? let intValue = parseInt(myStr, 10); 2024-09-04
1811 How do you convert a string to an integer in Java? int intValue = Integer.parseInt(myStr); 2024-09-04
1812 How do you convert a string to an integer in C++? int intValue = std::stoi(myStr); 2024-09-04
1813 How do you convert an integer to a string in Python? str_value = str(my_int) 2024-09-04
1814 How do you convert an integer to a string in JavaScript? let strValue = myInt.toString(); 2024-09-04
1815 How do you convert an integer to a string in Java? String strValue = Integer.toString(myInt); 2024-09-04
1816 How do you convert an integer to a string in C++? std::string strValue = std::to_string(myInt); 2024-09-04
1817 How do you concatenate two strings in Python? result = str1 + str2 2024-09-04
1818 How do you concatenate two strings in JavaScript? let result = str1 + str2; 2024-09-04
1819 How do you concatenate two strings in Java? String result = str1 + str2; 2024-09-04
1820 How do you concatenate two strings in C++? std::string result = str1 + str2; 2024-09-04
1821 How do you find the length of a string in Python? length = len(my_str) 2024-09-04
1822 How do you find the length of a string in JavaScript? let length = myStr.length; 2024-09-04
1823 How do you find the length of a string in Java? int length = myStr.length(); 2024-09-04
1824 How do you find the length of a string in C++? int length = myStr.length(); 2024-09-04
1825 How do you check if a string contains a substring in Python? if substring in my_str: 2024-09-04
1826 How do you check if a string contains a substring in JavaScript? if (myStr.includes(substring)) { /* found */ } 2024-09-04
1827 How do you check if a string contains a substring in Java? if (myStr.contains(substring)) { /* found */ } 2024-09-04
1828 How do you check if a string contains a substring in C++? if (myStr.find(substring) != std::string::npos) { /* found */ } 2024-09-04
1829 How do you split a string by a delimiter in Python? split_list = my_str.split(delimiter) 2024-09-04
1830 How do you split a string by a delimiter in JavaScript? let splitArray = myStr.split(delimiter); 2024-09-04
1831 How do you split a string by a delimiter in Java? String[] splitArray = myStr.split(delimiter); 2024-09-04
1832 How do you split a string by a delimiter in C++? #include std::stringstream ss(myStr); std::string item; std::vector splitArray; while (std::getline(ss, item, delimiter)) { splitArray.push_back(item); } 2024-09-04
1833 How do you join elements of a list into a string in Python? joined_str = delimiter.join(my_list) 2024-09-04
1834 How do you join elements of an array into a string in JavaScript? let joinedStr = myArray.join(delimiter); 2024-09-04
1835 How do you join elements of a list into a string in Java? String joinedStr = String.join(delimiter, myList); 2024-09-04
1836 How do you join elements of a vector into a string in C++? #include std::stringstream ss; for (const auto& element : myVector) { if (&element != &myVector[0]) ss << delimiter; ss << element; } std::string joinedStr = ss.str(); 2024-09-04
1837 How do you find the average of a list of numbers in Python? average = sum(my_list) / len(my_list) 2024-09-04
1838 How do you find the average of an array of numbers in JavaScript? let average = myArray.reduce((a, b) => a + b, 0) / myArray.length; 2024-09-04
1839 How do you find the average of a list of numbers in Java? double average = myList.stream().mapToInt(Integer::intValue).average().orElse(0); 2024-09-04
1840 How do you find the average of a vector of numbers in C++? #include double average = std::accumulate(myVector.begin(), myVector.end(), 0.0) / myVector.size(); 2024-09-04
1841 How do you remove an element from a list in Python? my_list.remove(value) 2024-09-04
1842 How do you remove an element from an array in JavaScript? let index = myArray.indexOf(value); if (index > -1) { myArray.splice(index, 1); } 2024-09-04
1843 How do you remove an element from a list in Java? myList.remove(value); 2024-09-04
1844 How do you remove an element from a vector in C++? auto it = std::remove(myVector.begin(), myVector.end(), value); myVector.erase(it, myVector.end()); 2024-09-04
1845 How do you check if a list is empty in Python? if not my_list: 2024-09-04
1846 How do you check if an array is empty in JavaScript? if (myArray.length === 0) { /* empty */ } 2024-09-04
1847 How do you check if a list is empty in Java? if (myList.isEmpty()) { /* empty */ } 2024-09-04
1848 How do you check if a vector is empty in C++? if (myVector.empty()) { /* empty */ } 2024-09-04
1849 How do you get the first element of a list in Python? first_element = my_list[0] 2024-09-04
1850 How do you get the first element of an array in JavaScript? let firstElement = myArray[0]; 2024-09-04
1851 How do you get the first element of a list in Java? T firstElement = myList.get(0); 2024-09-04
1852 How do you get the first element of a vector in C++? T firstElement = myVector.front(); 2024-09-04
1853 How do you get the last element of a list in Python? last_element = my_list[-1] 2024-09-04
1854 How do you get the last element of an array in JavaScript? let lastElement = myArray[myArray.length - 1]; 2024-09-04
1855 How do you get the last element of a list in Java? T lastElement = myList.get(myList.size() - 1); 2024-09-04
1856 How do you get the last element of a vector in C++? T lastElement = myVector.back(); 2024-09-04
1857 How do you check if a value is in a list in Python? if value in my_list: 2024-09-04
1858 How do you check if a value is in an array in JavaScript? if (myArray.includes(value)) { /* found */ } 2024-09-04
1859 How do you check if a value is in a list in Java? if (myList.contains(value)) { /* found */ } 2024-09-04
1860 How do you check if a value is in a vector in C++? if (std::find(myVector.begin(), myVector.end(), value) != myVector.end()) { /* found */ } 2024-09-04
1861 How do you convert a list of strings to a single string in Python? joined_str = "".join(my_list) 2024-09-04
1862 How do you convert an array of strings to a single string in JavaScript? let joinedStr = myArray.join(""); 2024-09-04
1863 How do you convert a list of strings to a single string in Java? String joinedStr = String.join("", myList); 2024-09-04
1864 How do you convert a vector of strings to a single string in C++? #include std::stringstream ss; for (const auto& element : myVector) { if (&element != &myVector[0]) ss << ""; ss << element; } std::string joinedStr = ss.str(); 2024-09-04
1865 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-04
1866 How do you find the maximum value in an array in JavaScript? let maxValue = Math.max(...myArray); 2024-09-04
1867 How do you find the maximum value in a list in Java? int maxValue = Collections.max(myList); 2024-09-04
1868 How do you find the maximum value in a vector in C++? #include int maxValue = *std::max_element(myVector.begin(), myVector.end()); 2024-09-04
1869 How do you reverse a list in Python? my_list.reverse() 2024-09-04
1870 How do you reverse an array in JavaScript? myArray.reverse(); 2024-09-04
1871 How do you reverse a list in Java? Collections.reverse(myList); 2024-09-04
1872 How do you reverse a vector in C++? #include std::reverse(myVector.begin(), myVector.end()); 2024-09-04
1873 How do you remove duplicates from a list in Python? my_list = list(set(my_list)) 2024-09-04
1874 How do you remove duplicates from an array in JavaScript? myArray = [...new Set(myArray)]; 2024-09-04
1875 How do you remove duplicates from a list in Java? List uniqueList = new ArrayList<>(new HashSet<>(myList)); 2024-09-04
1876 How do you remove duplicates from a vector in C++? #include #include std::set seen; myVector.erase(std::remove_if(myVector.begin(), myVector.end(), [&seen](const T& value) { return !seen.insert(value).second; }), myVector.end()); 2024-09-04
1877 How do you sort a list in ascending order in Python? my_list.sort() 2024-09-04
1878 How do you sort an array in ascending order in JavaScript? myArray.sort((a, b) => a - b); 2024-09-04
1879 How do you sort a list in ascending order in Java? Collections.sort(myList); 2024-09-04
1880 How do you sort a vector in ascending order in C++? #include std::sort(myVector.begin(), myVector.end()); 2024-09-04
1881 How do you check if a list contains only unique elements in Python? len(my_list) == len(set(my_list)) 2024-09-04
1882 How do you check if an array contains only unique elements in JavaScript? let uniqueArray = [...new Set(myArray)]; let isUnique = uniqueArray.length === myArray.length; 2024-09-04
1883 How do you check if a list contains only unique elements in Java? Set uniqueSet = new HashSet<>(myList); boolean isUnique = uniqueSet.size() == myList.size(); 2024-09-04
1884 How do you check if a vector contains only unique elements in C++? std::set uniqueSet(myVector.begin(), myVector.end()); bool isUnique = uniqueSet.size() == myVector.size(); 2024-09-04
1885 How do you convert a string to an integer in Python? integer = int(my_str) 2024-09-04
1886 How do you convert a string to an integer in JavaScript? let integer = parseInt(myStr, 10); 2024-09-04
1887 How do you convert a string to an integer in Java? int integer = Integer.parseInt(myStr); 2024-09-04
1888 How do you convert a string to an integer in C++? int integer = std::stoi(myStr); 2024-09-04
1889 How do you convert an integer to a string in Python? my_str = str(integer) 2024-09-04
1890 How do you convert an integer to a string in JavaScript? let myStr = integer.toString(); 2024-09-04
1891 How do you convert an integer to a string in Java? String myStr = Integer.toString(integer); 2024-09-04
1892 How do you convert an integer to a string in C++? std::string myStr = std::to_string(integer); 2024-09-04
1893 How do you get the length of a string in Python? length = len(my_str) 2024-09-04
1894 How do you get the length of a string in JavaScript? let length = myStr.length; 2024-09-04
1895 How do you get the length of a string in Java? int length = myStr.length(); 2024-09-04
1896 How do you get the length of a string in C++? size_t length = myStr.length(); 2024-09-04
1897 How do you find the index of an element in a list in Python? index = my_list.index(value) 2024-09-04
1898 How do you find the index of an element in an array in JavaScript? let index = myArray.indexOf(value); 2024-09-04
1899 How do you find the index of an element in a list in Java? int index = myList.indexOf(value); 2024-09-04
1900 How do you find the index of an element in a vector in C++? auto it = std::find(myVector.begin(), myVector.end(), value); int index = std::distance(myVector.begin(), it); 2024-09-04
1901 How do you split a string by a delimiter in Python? my_list = my_str.split(delimiter) 2024-09-04
1902 How do you split a string by a delimiter in JavaScript? let myArray = myStr.split(delimiter); 2024-09-04
1903 How do you split a string by a delimiter in Java? String[] myArray = myStr.split(delimiter); 2024-09-04
1904 How do you split a string by a delimiter in C++? #include #include std::vector split(const std::string& s, char delimiter) { std::vector tokens; std::stringstream ss(s); std::string token; while (std::getline(ss, token, delimiter)) { tokens.push_back(token); } return tokens; } 2024-09-04
1905 How do you join a list of strings into a single string in Python? joined_str = "".join(my_list) 2024-09-04
1906 How do you join an array of strings into a single string in JavaScript? let joinedStr = myArray.join(""); 2024-09-04
1907 How do you join a list of strings into a single string in Java? String joinedStr = String.join("", myList); 2024-09-04
1908 How do you join a vector of strings into a single string in C++? #include std::stringstream ss; for (const auto& element : myVector) { if (&element != &myVector[0]) ss << ""; ss << element; } std::string joinedStr = ss.str(); 2024-09-04
1909 How do you convert a string to a float in Python? float_num = float(my_str) 2024-09-04
1910 How do you convert a string to a float in JavaScript? let floatNum = parseFloat(myStr); 2024-09-04
1911 How do you convert a string to a float in Java? float floatNum = Float.parseFloat(myStr); 2024-09-04
1912 How do you convert a string to a float in C++? float floatNum = std::stof(myStr); 2024-09-04
1913 How do you check if a string contains a substring in Python? if substring in my_str: 2024-09-04
1914 How do you check if a string contains a substring in JavaScript? if (myStr.includes(substring)) { /* found */ } 2024-09-04
1915 How do you check if a string contains a substring in Java? if (myStr.contains(substring)) { /* found */ } 2024-09-04
1916 How do you check if a string contains a substring in C++? if (myStr.find(substring) != std::string::npos) { /* found */ } 2024-09-04
1917 How do you replace a substring in a string in Python? my_str = my_str.replace(old, new) 2024-09-04
1918 How do you replace a substring in a string in JavaScript? myStr = myStr.replace(old, new); 2024-09-04
1919 How do you replace a substring in a string in Java? myStr = myStr.replace(old, new); 2024-09-04
1920 How do you replace a substring in a string in C++? std::string::size_type pos = myStr.find(old); if (pos != std::string::npos) { myStr.replace(pos, old.length(), new); } 2024-09-04
1921 How do you concatenate two strings in Python? concatenated_str = str1 + str2 2024-09-04
1922 How do you concatenate two strings in JavaScript? let concatenatedStr = str1 + str2; 2024-09-04
1923 How do you concatenate two strings in Java? String concatenatedStr = str1 + str2; 2024-09-04
1924 How do you concatenate two strings in C++? std::string concatenatedStr = str1 + str2; 2024-09-04
1925 How do you get the first character of a string in Python? first_char = my_str[0] 2024-09-04
1926 How do you get the first character of a string in JavaScript? let firstChar = myStr[0]; 2024-09-04
1927 How do you get the first character of a string in Java? char firstChar = myStr.charAt(0); 2024-09-04
1928 How do you get the first character of a string in C++? char firstChar = myStr[0]; 2024-09-04
1929 How do you get the last character of a string in Python? last_char = my_str[-1] 2024-09-04
1930 How do you get the last character of a string in JavaScript? let lastChar = myStr[myStr.length - 1]; 2024-09-04
1931 How do you get the last character of a string in Java? char lastChar = myStr.charAt(myStr.length() - 1); 2024-09-04
1932 How do you get the last character of a string in C++? char lastChar = myStr[myStr.length() - 1]; 2024-09-04
1933 How do you count occurrences of a substring in a string in Python? count = my_str.count(substring) 2024-09-04
1934 How do you count occurrences of a substring in a string in JavaScript? let count = (myStr.match(new RegExp(substring, "g")) || []).length; 2024-09-04
1935 How do you count occurrences of a substring in a string in Java? int count = (int) myStr.chars().filter(ch -> ch == substring.charAt(0)).count(); 2024-09-04
1936 How do you count occurrences of a substring in a string in C++? int count = 0; size_t pos = myStr.find(substring); while (pos != std::string::npos) { count++; pos = myStr.find(substring, pos + 1); } 2024-09-04
1937 How do you convert a list of integers to a list of strings in Python? str_list = list(map(str, int_list)) 2024-09-04
1938 How do you convert an array of integers to an array of strings in JavaScript? let strArray = intArray.map(String); 2024-09-04
1939 How do you convert a list of integers to a list of strings in Java? List strList = intList.stream().map(String::valueOf).collect(Collectors.toList()); 2024-09-04
1940 How do you convert a vector of integers to a vector of strings in C++? #include #include #include std::vector intToStr(const std::vector& intVec) { std::vector strVec; std::transform(intVec.begin(), intVec.end(), std::back_inserter(strVec), [](int i) { return std::to_string(i); }); return strVec; } 2024-09-04
1941 How do you convert a string to an integer in Python? int_num = int(my_str) 2024-09-04
1942 How do you convert a string to an integer in JavaScript? let intNum = parseInt(myStr); 2024-09-04
1943 How do you convert a string to an integer in Java? int intNum = Integer.parseInt(myStr); 2024-09-04
1944 How do you convert a string to an integer in C++? int intNum = std::stoi(myStr); 2024-09-04
1945 How do you get a substring from a string in Python? substring = my_str[start:end] 2024-09-04
1946 How do you get a substring from a string in JavaScript? let substring = myStr.slice(start, end); 2024-09-04
1947 How do you get a substring from a string in Java? String substring = myStr.substring(start, end); 2024-09-04
1948 How do you get a substring from a string in C++? std::string substring = myStr.substr(start, length); 2024-09-04
1949 How do you convert a list of floats to a list of strings in Python? str_list = list(map(str, float_list)) 2024-09-04
1950 How do you convert an array of floats to an array of strings in JavaScript? let strArray = floatArray.map(String); 2024-09-04
1951 How do you convert a list of floats to a list of strings in Java? List strList = floatList.stream().map(String::valueOf).collect(Collectors.toList()); 2024-09-04
1952 How do you convert a vector of floats to a vector of strings in C++? #include #include #include std::vector floatToStr(const std::vector& floatVec) { std::vector strVec; std::transform(floatVec.begin(), floatVec.end(), std::back_inserter(strVec), [](float f) { return std::to_string(f); }); return strVec; } 2024-09-04
1953 How do you convert a float to a string in Python? str_num = str(float_num) 2024-09-04
1954 How do you convert a float to a string in JavaScript? let strNum = floatNum.toString(); 2024-09-04
1955 How do you convert a float to a string in Java? String strNum = Float.toString(floatNum); 2024-09-04
1956 How do you convert a float to a string in C++? std::string strNum = std::to_string(floatNum); 2024-09-04
1957 How do you check if a number is even in Python? if num % 2 == 0: 2024-09-04
1958 How do you check if a number is even in JavaScript? if (num % 2 === 0) { /* even */ } 2024-09-04
1959 How do you check if a number is even in Java? if (num % 2 == 0) { /* even */ } 2024-09-04
1960 How do you check if a number is even in C++? if (num % 2 == 0) { /* even */ } 2024-09-04
1961 How do you get the length of an array in Python? len(my_list) 2024-09-04
1962 How do you get the length of an array in JavaScript? myArray.length 2024-09-04
1963 How do you get the length of an array in Java? myArray.length 2024-09-04
1964 How do you get the length of an array in C++? int length = sizeof(myArray) / sizeof(myArray[0]); 2024-09-04
1965 How do you sort a list in Python? my_list.sort() 2024-09-04
1966 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
1967 How do you sort a list in Java? Arrays.sort(myArray); 2024-09-04
1968 How do you sort a vector in C++? #include std::sort(myVector.begin(), myVector.end()); 2024-09-04
1969 How do you append an element to a list in Python? my_list.append(element) 2024-09-04
1970 How do you append an element to an array in JavaScript? myArray.push(element); 2024-09-04
1971 How do you add an element to an array in Java? List.add(element); 2024-09-04
1972 How do you add an element to a vector in C++? myVector.push_back(element); 2024-09-04
1973 How do you remove an element from a list in Python? my_list.remove(element) 2024-09-04
1974 How do you remove an element from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
1975 How do you remove an element from a list in Java? myList.remove(element); 2024-09-04
1976 How do you remove an element from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
1977 How do you reverse a list in Python? my_list.reverse() 2024-09-04
1978 How do you reverse an array in JavaScript? myArray.reverse(); 2024-09-04
1979 How do you reverse a list in Java? Collections.reverse(myList); 2024-09-04
1980 How do you reverse a vector in C++? #include std::reverse(myVector.begin(), myVector.end()); 2024-09-04
1981 How do you find the maximum value in a list in Python? max(my_list) 2024-09-04
1982 How do you find the maximum value in an array in JavaScript? Math.max(...myArray); 2024-09-04
1983 How do you find the maximum value in a list in Java? Collections.max(myList); 2024-09-04
1984 How do you find the maximum value in a vector in C++? #include int maxVal = *std::max_element(myVector.begin(), myVector.end()); 2024-09-04
1985 How do you find the minimum value in a list in Python? min(my_list) 2024-09-04
1986 How do you find the minimum value in an array in JavaScript? Math.min(...myArray); 2024-09-04
1987 How do you find the minimum value in a list in Java? Collections.min(myList); 2024-09-04
1988 How do you find the minimum value in a vector in C++? #include int minVal = *std::min_element(myVector.begin(), myVector.end()); 2024-09-04
1989 How do you join a list of strings into a single string in Python? '.join(my_list) 2024-09-04
1990 How do you join an array of strings into a single string in JavaScript? myArray.join(", "); 2024-09-04
1991 How do you join a list of strings into a single string in Java? String result = String.join(", ", myList); 2024-09-04
1992 How do you join a vector of strings into a single string in C++? #include std::string join(const std::vector& vec, const std::string& delimiter) { std::ostringstream os; for (size_t i = 0; i < vec.size(); ++i) { if (i > 0) os << delimiter; os << vec[i]; } return os.str(); } 2024-09-04
1993 How do you check if a string contains a substring in Python? if substring in my_str: 2024-09-04
1994 How do you check if a string contains a substring in JavaScript? if (myStr.includes(substring)) { /* contains */ } 2024-09-04
1995 How do you check if a string contains a substring in Java? if (myStr.contains(substring)) { /* contains */ } 2024-09-04
1996 How do you check if a string contains a substring in C++? bool contains = myStr.find(substring) != std::string::npos; 2024-09-04
1997 How do you convert a string to lowercase in Python? my_str.lower() 2024-09-04
1998 How do you convert a string to lowercase in JavaScript? myStr.toLowerCase() 2024-09-04
1999 How do you convert a string to lowercase in Java? myStr.toLowerCase() 2024-09-04
2000 How do you convert a string to lowercase in C++? #include #include std::string toLowerCase(const std::string& str) { std::string result = str; std::transform(result.begin(), result.end(), result.begin(), [](unsigned char c) { return std::tolower(c); }); return result; } 2024-09-04
2001 How do you convert a string to uppercase in Python? my_str.upper() 2024-09-04
2002 How do you convert a string to uppercase in JavaScript? myStr.toUpperCase() 2024-09-04
2003 How do you convert a string to uppercase in Java? myStr.toUpperCase() 2024-09-04
2004 How do you convert a string to uppercase in C++? #include #include std::string toUpperCase(const std::string& str) { std::string result = str; std::transform(result.begin(), result.end(), result.begin(), [](unsigned char c) { return std::toupper(c); }); return result; } 2024-09-04
2005 How do you split a string into a list of substrings in Python? my_list = my_str.split(delimiter) 2024-09-04
2006 How do you split a string into an array of substrings in JavaScript? let substrings = myStr.split(delimiter); 2024-09-04
2007 How do you split a string into a list of substrings in Java? String[] substrings = myStr.split(delimiter); 2024-09-04
2008 How do you split a string into a vector of substrings in C++? #include #include std::vector split(const std::string& str, char delimiter) { std::vector tokens; std::stringstream ss(str); std::string token; while (std::getline(ss, token, delimiter)) { tokens.push_back(token); } return tokens; } 2024-09-04
2009 How do you check if a string is empty in Python? if not my_str: 2024-09-04
2010 How do you check if a string is empty in JavaScript? if (myStr === "") { /* empty */ } 2024-09-04
2011 How do you check if a string is empty in Java? if (myStr.isEmpty()) { /* empty */ } 2024-09-04
2012 How do you check if a string is empty in C++? bool isEmpty = myStr.empty(); 2024-09-04
2013 How do you get the first character of a string in Python? my_str[0] 2024-09-04
2014 How do you get the first character of a string in JavaScript? myStr.charAt(0) 2024-09-04
2015 How do you get the first character of a string in Java? myStr.charAt(0) 2024-09-04
2016 How do you get the first character of a string in C++? char firstChar = myStr[0]; 2024-09-04
2017 How do you get the last character of a string in Python? my_str[-1] 2024-09-04
2018 How do you get the last character of a string in JavaScript? myStr.charAt(myStr.length - 1) 2024-09-04
2019 How do you get the last character of a string in Java? myStr.charAt(myStr.length() - 1) 2024-09-04
2020 How do you get the last character of a string in C++? char lastChar = myStr[myStr.size() - 1]; 2024-09-04
2021 How do you concatenate two strings in Python? my_str1 + my_str2 2024-09-04
2022 How do you concatenate two strings in JavaScript? myStr1 + myStr2 2024-09-04
2023 How do you concatenate two strings in Java? myStr1.concat(myStr2) 2024-09-04
2024 How do you concatenate two strings in C++? std::string result = myStr1 + myStr2; 2024-09-04
2025 How do you find the index of a substring in Python? my_str.find(substring) 2024-09-04
2026 How do you find the index of a substring in JavaScript? myStr.indexOf(substring) 2024-09-04
2027 How do you find the index of a substring in Java? myStr.indexOf(substring) 2024-09-04
2028 How do you find the index of a substring in C++? size_t index = myStr.find(substring); 2024-09-04
2029 How do you replace a substring in Python? my_str.replace(old, new) 2024-09-04
2030 How do you replace a substring in JavaScript? myStr.replace(old, new) 2024-09-04
2031 How do you replace a substring in Java? myStr.replace(old, new) 2024-09-04
2032 How do you replace a substring in C++? #include std::string replaceAll(std::string str, const std::string& from, const std::string& to) { size_t start_pos = 0; while ((start_pos = str.find(from, start_pos)) != std::string::npos) { str.replace(start_pos, from.length(), to); start_pos += to.length(); } return str; } 2024-09-04
2033 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-04
2034 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle exception } 2024-09-04
2035 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-04
2036 How do you handle exceptions in C++? #include try { // code } catch (const std::exception& e) { // handle exception } 2024-09-04
2037 How do you read a file in Python? with open(filename, "r") as file: content = file.read() 2024-09-04
2038 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile(filename, "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
2039 How do you read a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get(filename))); 2024-09-04
2040 How do you read a file in C++? #include #include std::string readFile(const std::string& filename) { std::ifstream file(filename); std::string content((std::istreambuf_iterator(file)), std::istreambuf_iterator()); return content; } 2024-09-04
2041 How do you write to a file in Python? with open(filename, "w") as file: file.write(content) 2024-09-04
2042 How do you write to a file in JavaScript? const fs = require("fs"); fs.writeFile(filename, content, "utf8", (err) => { if (err) throw err; console.log("File has been saved!"); }); 2024-09-04
2043 How do you write to a file in Java? import java.nio.file.Files; import java.nio.file.Paths; Files.write(Paths.get(filename), content.getBytes()); 2024-09-04
2044 How do you write to a file in C++? #include #include void writeFile(const std::string& filename, const std::string& content) { std::ofstream file(filename); file << content; } 2024-09-04
2045 How do you remove whitespace from the beginning and end of a string in Python? my_str.strip() 2024-09-04
2046 How do you remove whitespace from the beginning and end of a string in JavaScript? myStr.trim() 2024-09-04
2047 How do you remove whitespace from the beginning and end of a string in Java? myStr.trim() 2024-09-04
2048 How do you remove whitespace from the beginning and end of a string in C++? #include #include std::string trim(const std::string& str) { std::string result = str; result.erase(result.begin(), std::find_if_not(result.begin(), result.end(), [](unsigned char c) { return std::isspace(c); })); result.erase(std::find_if_not(result.rbegin(), result.rend(), [](unsigned char c) { return std::isspace(c); }).base(), result.end()); return result; } 2024-09-04
2049 How do you get the length of a string in Python? len(my_str) 2024-09-04
2050 How do you get the length of a string in JavaScript? myStr.length 2024-09-04
2051 How do you get the length of a string in Java? myStr.length() 2024-09-04
2052 How do you get the length of a string in C++? size_t length = myStr.size(); 2024-09-04
2053 How do you check if a list is empty in Python? if not my_list: 2024-09-04
2054 How do you check if a list is empty in JavaScript? if (myList.length === 0) { /* empty */ } 2024-09-04
2055 How do you check if a list is empty in Java? if (myList.isEmpty()) { /* empty */ } 2024-09-04
2056 How do you check if a vector is empty in C++? if (myVector.empty()) { /* empty */ } 2024-09-04
2057 How do you sort a list in Python? my_list.sort() 2024-09-04
2058 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
2059 How do you sort a list in Java? Collections.sort(myList) 2024-09-04
2060 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()) 2024-09-04
2061 How do you reverse a string in Python? my_str[::-1] 2024-09-04
2062 How do you reverse a string in JavaScript? myStr.split("").reverse().join("") 2024-09-04
2063 How do you reverse a string in Java? new StringBuilder(myStr).reverse().toString() 2024-09-04
2064 How do you reverse a string in C++? std::reverse(myStr.begin(), myStr.end()) 2024-09-04
2065 How do you remove duplicates from a list in Python? my_list = list(set(my_list)) 2024-09-04
2066 How do you remove duplicates from an array in JavaScript? myArray = [...new Set(myArray)] 2024-09-04
2067 How do you remove duplicates from a list in Java? myList = new ArrayList<>(new HashSet<>(myList)) 2024-09-04
2068 How do you remove duplicates from a vector in C++? std::sort(myVector.begin(), myVector.end()); myVector.erase(std::unique(myVector.begin(), myVector.end()), myVector.end()); 2024-09-04
2069 How do you check if a number is even in Python? if num % 2 == 0: 2024-09-04
2070 How do you check if a number is even in JavaScript? if (num % 2 === 0) { /* even */ } 2024-09-04
2071 How do you check if a number is even in Java? if (num % 2 == 0) { /* even */ } 2024-09-04
2072 How do you check if a number is even in C++? if (num % 2 == 0) { /* even */ } 2024-09-04
2073 How do you find the factorial of a number in Python? import math result = math.factorial(n) 2024-09-04
2074 How do you find the factorial of a number in JavaScript? function factorial(n) { if (n === 0) return 1; return n * factorial(n - 1); } 2024-09-04
2075 How do you find the factorial of a number in Java? int factorial(int n) { if (n == 0) return 1; return n * factorial(n - 1); } 2024-09-04
2076 How do you find the factorial of a number in C++? int factorial(int n) { if (n == 0) return 1; return n * factorial(n - 1); } 2024-09-04
2077 How do you find the greatest common divisor (GCD) in Python? import math gcd = math.gcd(a, b) 2024-09-04
2078 How do you find the greatest common divisor (GCD) in JavaScript? function gcd(a, b) { if (b === 0) return a; return gcd(b, a % b); } 2024-09-04
2079 How do you find the greatest common divisor (GCD) in Java? int gcd(int a, int b) { if (b == 0) return a; return gcd(b, a % b); } 2024-09-04
2080 How do you find the greatest common divisor (GCD) in C++? int gcd(int a, int b) { if (b == 0) return a; return gcd(b, a % b); } 2024-09-04
2081 How do you swap two variables in Python? a, b = b, a 2024-09-04
2082 How do you swap two variables in JavaScript? [a, b] = [b, a] 2024-09-04
2083 How do you swap two variables in Java? int temp = a; a = b; b = temp; 2024-09-04
2084 How do you swap two variables in C++? int temp = a; a = b; b = temp; 2024-09-04
2085 How do you reverse a list in Python? my_list.reverse() 2024-09-04
2086 How do you reverse an array in JavaScript? myArray.reverse() 2024-09-04
2087 How do you reverse a list in Java? Collections.reverse(myList) 2024-09-04
2088 How do you declare a variable in Python? variable_name = value 2024-09-04
2089 How do you declare a variable in JavaScript? let variableName = value; 2024-09-04
2090 How do you declare a variable in Java? int x = 5; 2024-09-04
2091 How do you declare a variable in C++? int x = 10; 2024-09-04
2092 How do you create a function in Python? def function_name(): 2024-09-04
2093 How do you create a function in JavaScript? function functionName() {} 2024-09-04
2094 How do you create a function in Java? public void functionName() {} 2024-09-04
2095 How do you create a function in C++? void functionName() {} 2024-09-04
2096 How do you loop through a list in Python? for item in my_list: 2024-09-04
2097 How do you loop through an array in JavaScript? for (let i = 0; i < myArray.length; i++) {} 2024-09-04
2098 How do you loop through a list in Java? for (int i = 0; i < myList.size(); i++) {} 2024-09-04
2099 How do you loop through a vector in C++? for (int i = 0; i < myVector.size(); i++) {} 2024-09-04
2100 How do you add an element to a list in Python? my_list.append(element) 2024-09-04
2101 How do you add an element to an array in JavaScript? myArray.push(element) 2024-09-04
2102 How do you add an element to a list in Java? myList.add(element) 2024-09-04
2103 How do you add an element to a vector in C++? myVector.push_back(element) 2024-09-04
2104 How do you remove an element from a list in Python? my_list.remove(element) 2024-09-04
2105 How do you remove an element from an array in JavaScript? myArray.splice(index, 1) 2024-09-04
2106 How do you remove an element from a list in Java? myList.remove(index) 2024-09-04
2107 How do you remove an element from a vector in C++? myVector.erase(myVector.begin() + index) 2024-09-04
2108 How do you find the length of a list in Python? len(my_list) 2024-09-04
2109 How do you find the length of an array in JavaScript? myArray.length 2024-09-04
2110 How do you find the length of a list in Java? myList.size() 2024-09-04
2111 How do you find the length of a vector in C++? myVector.size() 2024-09-04
2112 How do you concatenate two lists in Python? list1 + list2 2024-09-04
2113 How do you concatenate two arrays in JavaScript? myArray1.concat(myArray2) 2024-09-04
2114 How do you concatenate two lists in Java? myList.addAll(anotherList) 2024-09-04
2115 How do you concatenate two vectors in C++? myVector.insert(myVector.end(), anotherVector.begin(), anotherVector.end()) 2024-09-04
2116 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-04
2117 How do you create an object in JavaScript? let obj = {key: "value"}; 2024-09-04
2118 How do you create a map in Java? Map map = new HashMap<>() 2024-09-04
2119 How do you create a map in C++? std::map myMap; 2024-09-04
2120 How do you access a value in a dictionary in Python? my_dict["key"] 2024-09-04
2121 How do you access a value in an object in JavaScript? obj.key 2024-09-04
2122 How do you access a value in a map in Java? map.get("key") 2024-09-04
2123 How do you access a value in a map in C++? myMap[key] 2024-09-04
2124 How do you check if a list contains an element in Python? if element in my_list: 2024-09-04
2125 How do you check if an array contains an element in JavaScript? if (myArray.includes(element)) {} 2024-09-04
2126 How do you check if a list contains an element in Java? if (myList.contains(element)) {} 2024-09-04
2127 How do you check if a vector contains an element in C++? if (std::find(myVector.begin(), myVector.end(), element) != myVector.end()) {} 2024-09-04
2128 How do you convert a string to an integer in Python? int_value = int(string_value) 2024-09-04
2129 How do you convert a string to an integer in JavaScript? let intValue = parseInt(stringValue); 2024-09-04
2130 How do you convert a string to an integer in Java? int intValue = Integer.parseInt(stringValue); 2024-09-04
2131 How do you convert a string to an integer in C++? int intValue = std::stoi(stringValue); 2024-09-04
2132 How do you convert an integer to a string in Python? string_value = str(int_value) 2024-09-04
2133 How do you convert an integer to a string in JavaScript? let stringValue = intValue.toString(); 2024-09-04
2134 How do you convert an integer to a string in Java? String stringValue = Integer.toString(intValue); 2024-09-04
2135 How do you convert an integer to a string in C++? std::string stringValue = std::to_string(intValue); 2024-09-04
2136 How do you reverse a string in Python? reversed_string = string[::-1] 2024-09-04
2137 How do you reverse a string in JavaScript? let reversedString = string.split("").reverse().join(""); 2024-09-04
2138 How do you reverse a string in Java? String reversedString = new StringBuilder(string).reverse().toString(); 2024-09-04
2139 How do you reverse a string in C++? std::reverse(string.begin(), string.end()); 2024-09-04
2140 How do you sort a list in Python? sorted_list = sorted(my_list) 2024-09-04
2141 How do you sort an array in JavaScript? myArray.sort(); 2024-09-04
2142 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
2143 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
2144 How do you create a class in Python? class MyClass: def __init__(self): 2024-09-04
2145 How do you create a class in JavaScript? class MyClass { constructor() {} 2024-09-04
2146 How do you create a class in Java? public class MyClass { public MyClass() {} 2024-09-04
2147 How do you create a class in C++? class MyClass { public: MyClass() {} 2024-09-04
2148 How do you handle exceptions in Python? try: # code except Exception as e: 2024-09-04
2149 How do you handle exceptions in JavaScript? try { // code } catch (e) {} 2024-09-04
2150 How do you handle exceptions in Java? try { // code } catch (Exception e) {} 2024-09-04
2151 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) {} 2024-09-04
2152 How do you remove an element from a list in Python? my_list.remove(element) 2024-09-04
2153 How do you remove an element from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
2154 How do you remove an element from a list in Java? myList.remove(index); 2024-09-04
2155 How do you remove an element from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
2156 How do you write a for loop in Python? for i in range(5): print(i) 2024-09-04
2157 How do you write a for loop in JavaScript? for (let i = 0; i < 5; i++) { console.log(i); } 2024-09-04
2158 How do you write a for loop in Java? for (int i = 0; i < 5; i++) { System.out.println(i); } 2024-09-04
2159 How do you write a for loop in C++? for (int i = 0; i < 5; i++) { std::cout << i; } 2024-09-04
2160 How do you write a while loop in Python? while condition: # code 2024-09-04
2161 How do you write a while loop in JavaScript? while (condition) { // code } 2024-09-04
2162 How do you write a while loop in Java? while (condition) { // code } 2024-09-04
2163 How do you write a while loop in C++? while (condition) { // code } 2024-09-04
2164 How do you find the length of a list in Python? length = len(my_list) 2024-09-04
2165 How do you find the length of an array in JavaScript? let length = myArray.length; 2024-09-04
2166 How do you find the length of a list in Java? int length = myList.size(); 2024-09-04
2167 How do you find the length of a vector in C++? int length = myVector.size(); 2024-09-04
2168 How do you declare a variable in Python? variable_name = value 2024-09-04
2169 How do you declare a variable in JavaScript? let variableName = value; 2024-09-04
2170 How do you declare a variable in Java? int variableName = value; 2024-09-04
2171 How do you declare a variable in C++? int variableName = value; 2024-09-04
2172 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
2173 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
2174 How do you create an ArrayList in Java? ArrayList myList = new ArrayList<>(); 2024-09-04
2175 How do you create a vector in C++? std::vector myVector = {1, 2, 3}; 2024-09-04
2176 How do you define a function in Python? def my_function(): pass 2024-09-04
2177 How do you define a function in JavaScript? function myFunction() {} 2024-09-04
2178 How do you define a method in Java? public void myMethod() {} 2024-09-04
2179 How do you define a function in C++? void myFunction() {} 2024-09-04
2180 How do you return a value from a function in Python? def my_function(): return value 2024-09-04
2181 How do you return a value from a function in JavaScript? function myFunction() { return value;} 2024-09-04
2182 How do you return a value from a method in Java? public int myMethod() { return value;} 2024-09-04
2183 How do you return a value from a function in C++? int myFunction() { return value;} 2024-09-04
2184 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-04
2185 How do you create an object in JavaScript? let myObject = {key: "value"}; 2024-09-04
2186 How do you create a map in Java? Map myMap = new HashMap<>(); 2024-09-04
2187 How do you create an unordered_map in C++? std::unordered_map myMap; 2024-09-04
2188 How do you concatenate strings in Python? result = str1 + str2 2024-09-04
2189 How do you concatenate strings in JavaScript? let result = str1 + str2; 2024-09-04
2190 How do you concatenate strings in Java? String result = str1.concat(str2); 2024-09-04
2191 How do you concatenate strings in C++? std::string result = str1 + str2; 2024-09-04
2192 How do you find the maximum element in a list in Python? max_element = max(my_list) 2024-09-04
2193 How do you find the maximum element in an array in JavaScript? let maxElement = Math.max(...myArray); 2024-09-04
2194 How do you find the maximum element in a list in Java? int maxElement = Collections.max(myList); 2024-09-04
2195 How do you find the maximum element in a vector in C++? int maxElement = *std::max_element(myVector.begin(), myVector.end()); 2024-09-04
2196 How do you read a file in Python? with open("filename.txt", "r") as file: data = file.read() 2024-09-04
2197 How do you read a file in JavaScript? let fs = require("fs"); fs.readFile("filename.txt", "utf8", function(err, data) { if (err) throw err; console.log(data); }); 2024-09-04
2198 How do you read a file in Java? BufferedReader reader = new BufferedReader(new FileReader("filename.txt")); String line = reader.readLine(); 2024-09-04
2199 How do you read a file in C++? std::ifstream file("filename.txt"); std::string line; while (std::getline(file, line)) { // process line } 2024-09-04
2200 How do you write a loop in Python? for i in range(5): print(i) 2024-09-04
2201 How do you write a loop in JavaScript? for (let i = 0; i < 5; i++) { console.log(i); } 2024-09-04
2202 How do you write a loop in Java? for (int i = 0; i < 5; i++) { System.out.println(i); } 2024-09-04
2203 How do you write a loop in C++? for (int i = 0; i < 5; i++) { std::cout << i << std::endl; } 2024-09-04
2204 How do you handle exceptions in Python? try: # Code that might raise an exception except ExceptionType: # Handle exception 2024-09-04
2205 How do you handle exceptions in JavaScript? try { // Code that might raise an exception } catch (error) { // Handle exception } 2024-09-04
2206 How do you handle exceptions in Java? try { // Code that might raise an exception } catch (Exception e) { // Handle exception } 2024-09-04
2207 How do you handle exceptions in C++? try { // Code that might throw an exception } catch (const std::exception& e) { // Handle exception } 2024-09-04
2208 How do you create a class in Python? class MyClass: def __init__(self): pass 2024-09-04
2209 How do you create a class in JavaScript? class MyClass { constructor() {} } 2024-09-04
2210 How do you create a class in Java? class MyClass { public MyClass() {} } 2024-09-04
2211 How do you create a class in C++? class MyClass { public: MyClass() {} }; 2024-09-04
2212 How do you create a Lambda function in Python? lambda_function = lambda x: x * 2 2024-09-04
2213 How do you create an arrow function in JavaScript? const arrowFunction = (x) => x * 2; 2024-09-04
2214 How do you create a thread in Java? Thread thread = new Thread(() -> { // Code to run in the thread }); thread.start(); 2024-09-04
2215 How do you create a thread in C++? std::thread myThread([](){ // Code to run in the thread }); myThread.join(); 2024-09-04
2216 How do you create a module in Python? # mymodule.py def my_function(): pass 2024-09-04
2217 How do you import a module in Python? import mymodule mymodule.my_function() 2024-09-04
2218 How do you import a module in JavaScript? import {myFunction} from "./myModule.js"; myFunction(); 2024-09-04
2219 How do you read user input in Python? user_input = input("Enter something: ") 2024-09-04
2220 How do you read user input in Java? Scanner scanner = new Scanner(System.in); String input = scanner.nextLine(); 2024-09-04
2221 How do you read user input in C++? std::string input; std::cin >> input; 2024-09-04
2222 How do you sort a list in Python? my_list.sort() 2024-09-04
2223 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
2224 How do you sort a list in Java? Collections.sort(myList); 2024-09-04
2225 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
2226 How do you concatenate strings in Python? result = "Hello " + "World" 2024-09-04
2227 How do you concatenate strings in JavaScript? let result = "Hello " + "World"; 2024-09-04
2228 How do you convert a string to an integer in Python? int("123") 2024-09-04
2229 How do you convert a string to a number in JavaScript? Number("123") 2024-09-04
2230 How do you convert a string to an integer in Java? Integer.parseInt("123") 2024-09-04
2231 How do you convert a string to an integer in C++? int num = std::stoi("123"); 2024-09-04
2232 How do you create a function in Python? def my_function(): pass 2024-09-04
2233 How do you create a function in JavaScript? function myFunction() { // code } 2024-09-04
2234 How do you create a function in Java? public void myFunction() { // code } 2024-09-04
2235 How do you create a function in C++? void myFunction() { // code } 2024-09-04
2236 How do you pass arguments to a function in Python? def my_function(arg1, arg2): pass 2024-09-04
2237 How do you pass arguments to a function in JavaScript? function myFunction(arg1, arg2) { // code } 2024-09-04
2238 How do you pass arguments to a function in Java? public void myFunction(int arg1, String arg2) { // code } 2024-09-04
2239 How do you pass arguments to a function in C++? void myFunction(int arg1, std::string arg2) { // code } 2024-09-04
2240 How do you return a value from a function in Python? def my_function(): return 42 2024-09-04
2241 How do you return a value from a function in JavaScript? function myFunction() { return 42; } 2024-09-04
2242 How do you return a value from a method in Java? public int myMethod() { return 42; } 2024-09-04
2243 How do you return a value from a function in C++? int myFunction() { return 42; } 2024-09-04
2244 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
2245 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
2246 How do you create an ArrayList in Java? ArrayList myList = new ArrayList<>(); 2024-09-04
2247 How do you create a vector in C++? std::vector myVector; 2024-09-04
2248 How do you append an item to a list in Python? my_list.append(4) 2024-09-04
2249 How do you append an item to an array in JavaScript? myArray.push(4); 2024-09-04
2250 How do you add an item to an ArrayList in Java? myList.add(4); 2024-09-04
2251 How do you add an item to a vector in C++? myVector.push_back(4); 2024-09-04
2252 How do you remove an item from a list in Python? my_list.remove(2) 2024-09-04
2253 How do you remove an item from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
2254 How do you remove an item from an ArrayList in Java? myList.remove(Integer.valueOf(2)); 2024-09-04
2255 How do you remove an item from a vector in C++? myVector.erase(std::remove(myVector.begin(), myVector.end(), 2), myVector.end()); 2024-09-04
2256 How do you find the length of a list in Python? len(my_list) 2024-09-04
2257 How do you find the length of an array in JavaScript? myArray.length 2024-09-04
2258 How do you find the size of an ArrayList in Java? myList.size() 2024-09-04
2259 How do you find the size of a vector in C++? myVector.size() 2024-09-04
2260 How do you sort a list in Python? my_list.sort() 2024-09-04
2261 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
2262 How do you sort an ArrayList in Java? Collections.sort(myList); 2024-09-04
2263 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
2264 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-04
2265 How do you create an object in JavaScript? let myObj = { key: "value" }; 2024-09-04
2266 How do you create a HashMap in Java? HashMap myMap = new HashMap<>(); 2024-09-04
2267 How do you create a map in C++? std::map myMap; 2024-09-04
2268 How do you add an item to a dictionary in Python? my_dict["new_key"] = "new_value" 2024-09-04
2269 How do you add a property to an object in JavaScript? myObj.newKey = "newValue"; 2024-09-04
2270 How do you add an entry to a HashMap in Java? myMap.put("newKey", "newValue"); 2024-09-04
2271 How do you add an entry to a map in C++? myMap["newKey"] = "newValue"; 2024-09-04
2272 How do you access a value from a dictionary in Python? value = my_dict["key"] 2024-09-04
2273 How do you access a property from an object in JavaScript? let value = myObj.key; 2024-09-04
2274 How do you get a value from a HashMap in Java? String value = myMap.get("key"); 2024-09-04
2275 How do you get a value from a map in C++? std::string value = myMap["key"]; 2024-09-04
2276 How do you handle exceptions in Python? try: # code except Exception as e: # handle error 2024-09-04
2277 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle error } 2024-09-04
2278 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle error } 2024-09-04
2279 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { // handle error } 2024-09-04
2280 How do you perform integer division in Python? result = 7 // 3 2024-09-04
2281 How do you perform integer division in JavaScript? let result = Math.floor(7 / 3); 2024-09-04
2282 How do you perform integer division in Java? int result = 7 / 3; 2024-09-04
2283 How do you perform integer division in C++? int result = 7 / 3; 2024-09-04
2284 How do you create a loop in Python? for i in range(5): print(i) 2024-09-04
2285 How do you create a loop in JavaScript? for (let i = 0; i < 5; i++) { console.log(i); } 2024-09-04
2286 How do you create a loop in Java? for (int i = 0; i < 5; i++) { System.out.println(i); } 2024-09-04
2287 How do you create a loop in C++? for (int i = 0; i < 5; i++) { std::cout << i << std::endl; } 2024-09-04
2288 How do you check if a number is even in Python? if num % 2 == 0: print("Even") 2024-09-04
2289 How do you check if a number is even in JavaScript? if (num % 2 === 0) { console.log("Even"); } 2024-09-04
2290 How do you check if a number is even in Java? if (num % 2 == 0) { System.out.println("Even"); } 2024-09-04
2291 How do you check if a number is even in C++? if (num % 2 == 0) { std::cout << "Even" << std::endl; } 2024-09-04
2292 How do you concatenate strings in Python? result = "Hello " + "World" 2024-09-04
2293 How do you concatenate strings in JavaScript? let result = "Hello " + "World"; 2024-09-04
2294 How do you concatenate strings in Java? String result = "Hello " + "World"; 2024-09-04
2295 How do you concatenate strings in C++? std::string result = "Hello " + "World"; 2024-09-04
2296 How do you read user input in Python? input("Enter something: ") 2024-09-04
2297 How do you read user input in JavaScript? let input = prompt("Enter something:"); 2024-09-04
2298 How do you read user input in Java? Scanner scanner = new Scanner(System.in); String input = scanner.nextLine(); 2024-09-04
2299 How do you read user input in C++? std::string input; std::cin >> input; 2024-09-04
2300 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello World") 2024-09-04
2301 How do you write to a file in JavaScript? const fs = require("fs"); fs.writeFileSync("file.txt", "Hello World"); 2024-09-04
2302 How do you write to a file in Java? try (FileWriter writer = new FileWriter("file.txt")) { writer.write("Hello World"); } 2024-09-04
2303 How do you write to a file in C++? std::ofstream file("file.txt"); file << "Hello World"; file.close(); 2024-09-04
2304 How do you handle missing values in Python? df.fillna(0) 2024-09-04
2305 How do you handle missing values in JavaScript? array.filter(value => value !== undefined) 2024-09-04
2306 How do you handle missing values in Java? List filteredList = list.stream().filter(Objects::nonNull).collect(Collectors.toList()); 2024-09-04
2307 How do you handle missing values in C++? std::remove_if(v.begin(), v.end(), [](int i){ return i == -1; }); 2024-09-04
2308 How do you check if a key exists in a dictionary in Python? if "key" in my_dict: 2024-09-04
2309 How do you check if a property exists in an object in JavaScript? if ("key" in myObj) { /* code */ } 2024-09-04
2310 How do you check if a key exists in a HashMap in Java? if (myMap.containsKey("key")) { /* code */ } 2024-09-04
2311 How do you check if a key exists in a map in C++? if (myMap.find("key") != myMap.end()) { /* code */ } 2024-09-04
2312 How do you get the current time in Python? import datetime now = datetime.datetime.now() 2024-09-04
2313 How do you get the current time in JavaScript? let now = new Date(); 2024-09-04
2314 How do you get the current time in Java? LocalDateTime now = LocalDateTime.now(); 2024-09-04
2315 How do you get the current time in C++? std::chrono::system_clock::time_point now = std::chrono::system_clock::now(); 2024-09-04
2316 How do you declare a variable in Python? x = 10 2024-09-04
2317 How do you declare a variable in JavaScript? let x = 10; 2024-09-04
2318 How do you declare a variable in Java? int x = 10; 2024-09-04
2319 How do you declare a variable in C++? int x = 10; 2024-09-04
2320 How do you create a function in Python? def my_function(): pass 2024-09-04
2321 How do you create a function in JavaScript? function myFunction() { // code } 2024-09-04
2322 How do you create a method in Java? public void myMethod() { // code } 2024-09-04
2323 How do you create a method in C++? void myMethod() { // code } 2024-09-04
2324 How do you create an array in Python? my_list = [1, 2, 3] 2024-09-04
2325 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
2326 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-04
2327 How do you create an array in C++? int myArray[] = {1, 2, 3}; 2024-09-04
2328 How do you write a for loop in Python? for i in range(5): print(i) 2024-09-04
2329 How do you write a for loop in JavaScript? for (let i = 0; i < 5; i++) { console.log(i); } 2024-09-04
2330 How do you write a for loop in Java? for (int i = 0; i < 5; i++) { System.out.println(i); } 2024-09-04
2331 How do you write a for loop in C++? for (int i = 0; i < 5; i++) { std::cout << i << std::endl; } 2024-09-04
2332 How do you write an if statement in Python? if x > 10: print("x is greater than 10") 2024-09-04
2333 How do you write an if statement in JavaScript? if (x > 10) { console.log("x is greater than 10"); } 2024-09-04
2334 How do you write an if statement in Java? if (x > 10) { System.out.println("x is greater than 10"); } 2024-09-04
2335 How do you write an if statement in C++? if (x > 10) { std::cout << "x is greater than 10" << std::endl; } 2024-09-04
2336 How do you define a class in Python? class MyClass: def __init__(self): pass 2024-09-04
2337 How do you define a class in JavaScript? class MyClass { constructor() { // code } } 2024-09-04
2338 How do you define a class in Java? public class MyClass { public MyClass() { // code } } 2024-09-04
2339 How do you define a class in C++? class MyClass { public: MyClass() { // code } }; 2024-09-04
2340 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-04
2341 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle exception } 2024-09-04
2342 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-04
2343 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { // handle exception } 2024-09-04
2344 How do you connect to a database in Python? import sqlite3 conn = sqlite3.connect("mydatabase.db") 2024-09-04
2345 How do you connect to a database in JavaScript? const mysql = require("mysql"); const connection = mysql.createConnection({ host: "localhost", user: "root", password: "", database: "mydatabase" }); connection.connect(); 2024-09-04
2346 How do you connect to a database in Java? Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/mydatabase", "root", ""); 2024-09-04
2347 How do you connect to a database in C++? #include MYSQL* conn; conn = mysql_init(NULL); mysql_real_connect(conn, "localhost", "root", "", "mydatabase", 0, NULL, 0); 2024-09-04
2348 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
2349 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
2350 How do you read a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("file.txt"))); 2024-09-04
2351 How do you read a file in C++? #include std::ifstream file("file.txt"); std::string content((std::istreambuf_iterator(file)), std::istreambuf_iterator()); 2024-09-04
2352 How do you write a file in Python? with open("file.txt", "w") as file: file.write("Hello World") 2024-09-04
2353 How do you write a file in JavaScript? const fs = require("fs"); fs.writeFile("file.txt", "Hello World", (err) => { if (err) throw err; console.log("File saved!"); }); 2024-09-04
2354 How do you write a file in Java? import java.nio.file.Files; import java.nio.file.Paths; Files.write(Paths.get("file.txt"), "Hello World".getBytes()); 2024-09-04
2355 How do you write a file in C++? #include std::ofstream file("file.txt"); file << "Hello World"; 2024-09-04
2356 How do you create a class in Python? class MyClass: def __init__(self): self.value = 0 2024-09-04
2357 How do you create a class in JavaScript? class MyClass { constructor() { this.value = 0; } } 2024-09-04
2358 How do you create a class in Java? public class MyClass { int value; public MyClass() { value = 0; } } 2024-09-04
2359 How do you create a class in C++? class MyClass { public: int value; MyClass() { value = 0; } }; 2024-09-04
2360 How do you use a try-catch block in Python? try: # code except Exception as e: print(e) 2024-09-04
2361 How do you use a try-catch block in JavaScript? try { // code } catch (e) { console.error(e); } 2024-09-04
2362 How do you use a try-catch block in Java? try { // code } catch (Exception e) { e.printStackTrace(); } 2024-09-04
2363 How do you use a try-catch block in C++? try { // code } catch (const std::exception& e) { std::cerr << e.what() << std::endl; } 2024-09-04
2364 How do you perform string concatenation in Python? result = "Hello" + " " + "World" 2024-09-04
2365 How do you perform string concatenation in JavaScript? let result = "Hello" + " " + "World"; 2024-09-04
2366 How do you reverse a string in Python? reversed_string = my_string[::-1] 2024-09-04
2367 How do you reverse a string in JavaScript? let reversedString = myString.split("").reverse().join(""); 2024-09-04
2368 How do you reverse a string in Java? String reversedString = new StringBuilder(myString).reverse().toString(); 2024-09-04
2369 How do you reverse a string in C++? #include std::reverse(myString.begin(), myString.end()); 2024-09-04
2370 How do you sort an array in Python? sorted_array = sorted(my_array) 2024-09-04
2371 How do you sort an array in JavaScript? let sortedArray = myArray.sort(); 2024-09-04
2372 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-04
2373 How do you sort an array in C++? #include std::sort(myArray.begin(), myArray.end()); 2024-09-04
2374 How do you write a file in Python? with open("file.txt", "w") as file: file.write("Hello World") 2024-09-04
2375 How do you write a file in JavaScript? const fs = require("fs"); fs.writeFile("file.txt", "Hello World", (err) => { if (err) throw err; console.log("File saved!"); }); 2024-09-04
2376 How do you write a file in Java? import java.nio.file.Files; import java.nio.file.Paths; Files.write(Paths.get("file.txt"), "Hello World".getBytes()); 2024-09-04
2377 How do you write a file in C++? #include std::ofstream file("file.txt"); file << "Hello World"; 2024-09-04
2378 How do you connect to a database in Python? import sqlite3 conn = sqlite3.connect("mydatabase.db") 2024-09-04
2379 How do you connect to a database in JavaScript? const mysql = require("mysql"); const connection = mysql.createConnection({ host: "localhost", user: "root", password: "", database: "mydatabase" }); connection.connect(); 2024-09-04
2380 How do you connect to a database in Java? Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/mydatabase", "root", ""); 2024-09-04
2381 How do you connect to a database in C++? #include MYSQL* conn; conn = mysql_init(NULL); mysql_real_connect(conn, "localhost", "root", "", "mydatabase", 0, NULL, 0); 2024-09-04
2382 How do you perform string concatenation in Python? result = "Hello" + " " + "World" 2024-09-04
2383 How do you perform string concatenation in JavaScript? let result = "Hello" + " " + "World"; 2024-09-04
2384 How do you perform string concatenation in Java? String result = "Hello" + " " + "World"; 2024-09-04
2385 How do you perform string concatenation in C++? std::string result = "Hello" + std::string(" ") + "World"; 2024-09-04
2386 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
2387 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
2388 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-04
2389 How do you create an array in C++? int myArray[] = {1, 2, 3}; 2024-09-04
2390 How do you create a class in Python? class MyClass: def __init__(self): self.value = 0 2024-09-04
2391 How do you create a class in JavaScript? class MyClass { constructor() { this.value = 0; } } 2024-09-04
2392 How do you create a class in Java? class MyClass { int value; MyClass() { value = 0; } } 2024-09-04
2393 How do you create a class in C++? class MyClass { public: int value; MyClass() { value = 0; } }; 2024-09-04
2394 How do you handle exceptions in Python? try: # code except Exception as e: print(e) 2024-09-04
2395 How do you handle exceptions in JavaScript? try { // code } catch (error) { console.log(error); } 2024-09-04
2396 How do you handle exceptions in Java? try { // code } catch (Exception e) { System.out.println(e); } 2024-09-04
2397 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { std::cout << e.what(); } 2024-09-04
2398 How do you create a dictionary in Python? my_dict = {"key1": "value1", "key2": "value2"} 2024-09-04
2399 How do you create an object in JavaScript? let myObject = { key1: "value1", key2: "value2" }; 2024-09-04
2400 How do you create a hashmap in Java? HashMap myMap = new HashMap<>(); myMap.put("key1", "value1"); 2024-09-04
2401 How do you create a map in C++? #include std::map myMap; myMap["key1"] = "value1"; 2024-09-04
2402 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
2403 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
2404 How do you read a file in Java? BufferedReader reader = new BufferedReader(new FileReader("file.txt")); String line = reader.readLine(); 2024-09-04
2405 How do you read a file in C++? #include std::ifstream file("file.txt"); std::string content; file >> content; 2024-09-04
2406 How do you append to a list in Python? my_list.append("new_item") 2024-09-04
2407 How do you append to an array in JavaScript? myArray.push("new_item"); 2024-09-04
2408 How do you append to an ArrayList in Java? myArrayList.add("new_item"); 2024-09-04
2409 How do you append to a vector in C++? #include std::vector myVector; myVector.push_back(10); 2024-09-04
2410 How do you create a function in Python? def my_function(): return "Hello, World!" 2024-09-04
2411 How do you create a function in JavaScript? function myFunction() { return "Hello, World!"; } 2024-09-04
2412 How do you create a method in Java? public String myMethod() { return "Hello, World!"; } 2024-09-04
2413 How do you create a function in C++? std::string myFunction() { return "Hello, World!"; } 2024-09-04
2414 How do you create a lambda function in Python? lambda_func = lambda x: x + 2 2024-09-04
2415 How do you create an arrow function in JavaScript? const myFunction = (x) => x + 2; 2024-09-04
2416 How do you create a thread in Python? import threading thread = threading.Thread(target=my_function) thread.start() 2024-09-04
2417 How do you create a thread in Java? Thread thread = new Thread(() -> myMethod()); thread.start(); 2024-09-04
2418 How do you create a thread in C++? #include std::thread myThread(myFunction); myThread.join(); 2024-09-04
2419 How do you create an infinite loop in Python? while True: print("infinite loop") 2024-09-04
2420 How do you create an infinite loop in JavaScript? while (true) { console.log("infinite loop"); } 2024-09-04
2421 How do you create an infinite loop in Java? while (true) { System.out.println("infinite loop"); } 2024-09-04
2422 How do you create an infinite loop in C++? while (true) { std::cout << "infinite loop" << std::endl; } 2024-09-04
2423 How do you generate a random number in Python? import random rand_num = random.randint(1, 100) 2024-09-04
2424 How do you generate a random number in JavaScript? let randNum = Math.floor(Math.random() * 100) + 1; 2024-09-04
2425 How do you generate a random number in Java? import java.util.Random; Random rand = new Random(); int randNum = rand.nextInt(100) + 1; 2024-09-04
2426 How do you generate a random number in C++? #include int randNum = rand() % 100 + 1; 2024-09-04
2427 How do you declare a variable in Python? variable = 10 2024-09-04
2428 How do you declare a variable in JavaScript? let variable = 10; 2024-09-04
2429 How do you declare a variable in Java? int variable = 10; 2024-09-04
2430 How do you declare a variable in C++? int variable = 10; 2024-09-04
2431 How do you write an if statement in Python? if x > 10: print("x is greater than 10") 2024-09-04
2432 How do you write an if statement in JavaScript? if (x > 10) { console.log("x is greater than 10"); } 2024-09-04
2433 How do you write an if statement in Java? if (x > 10) { System.out.println("x is greater than 10"); } 2024-09-04
2434 How do you write an if statement in C++? if (x > 10) { std::cout << "x is greater than 10"; } 2024-09-04
2435 How do you create a for loop in Python? for i in range(5): print(i) 2024-09-04
2436 How do you create a for loop in JavaScript? for (let i = 0; i < 5; i++) { console.log(i); } 2024-09-04
2437 How do you create a for loop in Java? for (int i = 0; i < 5; i++) { System.out.println(i); } 2024-09-04
2438 How do you create a for loop in C++? for (int i = 0; i < 5; i++) { std::cout << i << std::endl; } 2024-09-04
2439 How do you create a class in Python? class MyClass: def __init__(self, name): self.name = name 2024-09-04
2440 How do you create a class in JavaScript? class MyClass { constructor(name) { this.name = name; } } 2024-09-04
2441 How do you create a class in Java? class MyClass { String name; public MyClass(String name) { this.name = name; } } 2024-09-04
2442 How do you create a class in C++? class MyClass { std::string name; public: MyClass(std::string name) { this->name = name; } }; 2024-09-04
2443 How do you check if a number is even in Python? if x % 2 == 0: print("x is even") 2024-09-04
2444 How do you check if a number is even in JavaScript? if (x % 2 === 0) { console.log("x is even"); } 2024-09-04
2445 How do you check if a number is even in Java? if (x % 2 == 0) { System.out.println("x is even"); } 2024-09-04
2446 How do you check if a number is even in C++? if (x % 2 == 0) { std::cout << "x is even" << std::endl; } 2024-09-04
2447 How do you reverse a string in Python? reversed_string = my_string[::-1] 2024-09-04
2448 How do you reverse a string in JavaScript? let reversedString = myString.split("").reverse().join(""); 2024-09-04
2449 How do you reverse a string in Java? String reversedString = new StringBuilder(myString).reverse().toString(); 2024-09-04
2450 How do you reverse a string in C++? #include std::string reversedString = myString; std::reverse(reversedString.begin(), reversedString.end()); 2024-09-04
2451 How do you swap two variables in Python? x, y = y, x 2024-09-04
2452 How do you swap two variables in JavaScript? [x, y] = [y, x]; 2024-09-04
2453 How do you swap two variables in Java? int temp = x; x = y; y = temp; 2024-09-04
2454 How do you swap two variables in C++? int temp = x; x = y; y = temp; 2024-09-04
2455 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
2456 How do you create an array in JavaScript? let arr = [1, 2, 3]; 2024-09-04
2457 How do you create an array in Java? int[] arr = {1, 2, 3}; 2024-09-04
2458 How do you create an array in C++? int arr[] = {1, 2, 3}; 2024-09-04
2459 How do you remove an element from a list in Python? my_list.remove(2) 2024-09-04
2460 How do you remove an element from an array in JavaScript? arr.splice(arr.indexOf(2), 1); 2024-09-04
2461 How do you remove an element from an array in Java? ArrayList list = new ArrayList<>(Arrays.asList(arr)); list.remove(Integer.valueOf(2)); 2024-09-04
2462 How do you remove an element from an array in C++? arr.erase(std::remove(arr.begin(), arr.end(), 2), arr.end()); 2024-09-04
2463 How do you find the length of a list in Python? len(my_list) 2024-09-04
2464 How do you find the length of an array in JavaScript? arr.length 2024-09-04
2465 How do you find the length of an array in Java? arr.length 2024-09-04
2466 How do you find the length of an array in C++? sizeof(arr) / sizeof(arr[0]) 2024-09-04
2467 How do you create a function in Python? def my_function(): print("Hello World") 2024-09-04
2468 How do you create a function in JavaScript? function myFunction() { console.log("Hello World"); } 2024-09-04
2469 How do you create a function in Java? public void myFunction() { System.out.println("Hello World"); } 2024-09-04
2470 How do you create a function in C++? void myFunction() { std::cout << "Hello World" << std::endl; } 2024-09-04
2471 How do you create a dictionary in Python? my_dict = {"name": "John", "age": 30} 2024-09-04
2472 How do you create an object in JavaScript? let myObj = {name: "John", age: 30}; 2024-09-04
2473 How do you create a HashMap in Java? HashMap myMap = new HashMap<>(); myMap.put("age", 30); 2024-09-04
2474 How do you create a map in C++? #include std::map myMap; myMap["age"] = 30; 2024-09-04
2475 How do you concatenate strings in Python? full_name = first_name + " " + last_name 2024-09-04
2476 How do you concatenate strings in JavaScript? let fullName = firstName + " " + lastName; 2024-09-04
2477 How do you concatenate strings in Java? String fullName = firstName + " " + lastName; 2024-09-04
2478 How do you concatenate strings in C++? std::string fullName = firstName + " " + lastName; 2024-09-04
2479 How do you sort a list in Python? my_list.sort() 2024-09-04
2480 How do you sort an array in JavaScript? arr.sort(); 2024-09-04
2481 How do you sort an array in Java? Arrays.sort(arr); 2024-09-04
2482 How do you sort an array in C++? #include std::sort(arr, arr + n); 2024-09-04
2483 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-04
2484 How do you find the maximum value in an array in JavaScript? let maxValue = Math.max(...arr); 2024-09-04
2485 How do you find the maximum value in an array in Java? int maxValue = Collections.max(Arrays.asList(arr)); 2024-09-04
2486 How do you find the maximum value in an array in C++? int maxValue = *std::max_element(arr, arr + n); 2024-09-04
2487 How do you check if a list contains an element in Python? if 10 in my_list: print("Found") 2024-09-04
2488 How do you check if an array contains an element in JavaScript? if (arr.includes(10)) { console.log("Found"); } 2024-09-04
2489 How do you check if an array contains an element in Java? if (Arrays.asList(arr).contains(10)) { System.out.println("Found"); } 2024-09-04
2490 How do you check if an array contains an element in C++? if (std::find(arr, arr + n, 10) != arr + n) { std::cout << "Found"; } 2024-09-04
2491 How do you find the index of an element in a list in Python? index = my_list.index(10) 2024-09-04
2492 How do you find the index of an element in an array in JavaScript? let index = arr.indexOf(10); 2024-09-04
2493 How do you find the index of an element in an array in Java? int index = Arrays.asList(arr).indexOf(10); 2024-09-04
2494 How do you find the index of an element in an array in C++? int index = std::distance(arr, std::find(arr, arr + n, 10)); 2024-09-04
2495 How do you reverse a list in Python? my_list.reverse() 2024-09-04
2496 How do you reverse an array in JavaScript? arr.reverse(); 2024-09-04
2497 How do you reverse an array in Java? Collections.reverse(Arrays.asList(arr)); 2024-09-04
2498 How do you reverse an array in C++? #include std::reverse(arr, arr + n); 2024-09-04
2499 How do you append an element to a list in Python? my_list.append(10) 2024-09-04
2500 How do you append an element to an array in JavaScript? arr.push(10); 2024-09-04
2501 How do you append an element to an array in Java? int[] newArr = Arrays.copyOf(arr, arr.length + 1); newArr[newArr.length - 1] = 10; 2024-09-04
2502 How do you append an element to an array in C++? #include std::vector vec(arr, arr + n); vec.push_back(10); 2024-09-04
2503 How do you remove an element from a list in Python? my_list.remove(10) 2024-09-04
2504 How do you remove an element from an array in JavaScript? arr.splice(arr.indexOf(10), 1); 2024-09-04
2505 How do you remove an element from an array in Java? List list = new ArrayList<>(Arrays.asList(arr)); list.remove(Integer.valueOf(10)); 2024-09-04
2506 How do you remove an element from an array in C++? #include arr.erase(std::remove(arr.begin(), arr.end(), 10), arr.end()); 2024-09-04
2507 How do you convert a list to a string in Python? str_list = ",".join(my_list) 2024-09-04
2508 How do you convert an array to a string in JavaScript? let strArr = arr.join(","); 2024-09-04
2509 How do you convert an array to a string in Java? String strArr = Arrays.toString(arr); 2024-09-04
2510 How do you convert an array to a string in C++? #include std::ostringstream oss; for (int i : arr) { oss << i << ","; } std::string strArr = oss.str(); 2024-09-04
2511 How do you find the length of a list in Python? length = len(my_list) 2024-09-04
2512 How do you find the length of an array in JavaScript? let length = arr.length; 2024-09-04
2513 How do you find the length of an array in Java? int length = arr.length; 2024-09-04
2514 How do you find the length of an array in C++? int length = sizeof(arr) / sizeof(arr[0]); 2024-09-04
2515 How do you iterate through a list in Python? for item in my_list: print(item) 2024-09-04
2516 How do you iterate through an array in JavaScript? for (let i = 0; i < arr.length; i++) { console.log(arr[i]); } 2024-09-04
2517 How do you iterate through an array in Java? for (int i = 0; i < arr.length; i++) { System.out.println(arr[i]); } 2024-09-04
2518 How do you iterate through an array in C++? for (int i = 0; i < n; i++) { std::cout << arr[i] << std::endl; } 2024-09-04
2519 How do you filter a list in Python? filtered_list = [x for x in my_list if x > 10] 2024-09-04
2520 How do you filter an array in JavaScript? let filteredArr = arr.filter(x => x > 10); 2024-09-04
2521 How do you filter an array in Java? int[] filteredArr = Arrays.stream(arr).filter(x -> x > 10).toArray(); 2024-09-04
2522 How do you filter an array in C++? #include std::vector filteredArr; std::copy_if(arr.begin(), arr.end(), std::back_inserter(filteredArr), [](int i){ return i > 10; }); 2024-09-04
2523 How do you convert a string to an integer in Python? num = int("10") 2024-09-04
2524 How do you convert a string to an integer in JavaScript? let num = parseInt("10", 10); 2024-09-04
2525 How do you convert a string to an integer in Java? int num = Integer.parseInt("10"); 2024-09-04
2526 How do you convert a string to an integer in C++? int num = std::stoi("10"); 2024-09-04
2527 How do you handle exceptions in Python? try: risky_code() except Exception as e: print(e) 2024-09-04
2528 How do you handle exceptions in JavaScript? try { riskyCode(); } catch (e) { console.error(e); } 2024-09-04
2529 How do you handle exceptions in Java? try { riskyCode(); } catch (Exception e) { e.printStackTrace(); } 2024-09-04
2530 How do you handle exceptions in C++? try { riskyCode(); } catch (const std::exception& e) { std::cerr << e.what() << std::endl; } 2024-09-04
2531 How do you create a function in Python? def my_function(param): return param + 1 2024-09-04
2532 How do you create a function in JavaScript? function myFunction(param) { return param + 1; } 2024-09-04
2533 How do you create a function in Java? int myFunction(int param) { return param + 1; } 2024-09-04
2534 How do you create a function in C++? int myFunction(int param) { return param + 1; } 2024-09-04
2535 How do you concatenate strings in Python? result = "Hello" + " " + "World" 2024-09-04
2536 How do you concatenate strings in JavaScript? let result = "Hello" + " " + "World"; 2024-09-04
2537 How do you concatenate strings in Java? String result = "Hello" + " " + "World"; 2024-09-04
2538 How do you concatenate strings in C++? std::string result = "Hello" + " " + "World"; 2024-09-04
2539 How do you sort a list in Python? my_list.sort() 2024-09-04
2540 How do you sort an array in JavaScript? arr.sort() 2024-09-04
2541 How do you sort an array in Java? Arrays.sort(arr); 2024-09-04
2542 How do you sort an array in C++? #include std::sort(arr.begin(), arr.end()); 2024-09-04
2543 How do you find the maximum element in a list in Python? max_element = max(my_list) 2024-09-04
2544 How do you find the maximum element in an array in JavaScript? let maxElement = Math.max(...arr); 2024-09-04
2545 How do you find the maximum element in an array in Java? int max = Arrays.stream(arr).max().getAsInt(); 2024-09-04
2546 How do you find the maximum element in an array in C++? auto maxElement = *std::max_element(arr.begin(), arr.end()); 2024-09-04
2547 How do you check if a list is empty in Python? if not my_list: print("List is empty") 2024-09-04
2548 How do you check if an array is empty in JavaScript? if (arr.length === 0) { console.log("Array is empty"); } 2024-09-04
2549 How do you check if an array is empty in Java? if (arr.length == 0) { System.out.println("Array is empty"); } 2024-09-04
2550 How do you check if an array is empty in C++? if (arr.empty()) { std::cout << "Array is empty" << std::endl; } 2024-09-04
2551 How do you find the index of an element in a list in Python? index = my_list.index(10) 2024-09-04
2552 How do you find the index of an element in an array in JavaScript? let index = arr.indexOf(10); 2024-09-04
2553 How do you find the index of an element in an array in Java? int index = IntStream.range(0, arr.length).filter(i -> arr[i] == 10).findFirst().orElse(-1); 2024-09-04
2554 How do you find the index of an element in an array in C++? #include auto it = std::find(arr.begin(), arr.end(), 10); int index = (it != arr.end()) ? std::distance(arr.begin(), it) : -1; 2024-09-04
2555 How do you check for null or undefined values in JavaScript? if (value == null) { console.log("Value is null or undefined"); } 2024-09-04
2556 How do you check for null values in Java? if (obj == null) { System.out.println("Object is null"); } 2024-09-04
2557 How do you check for null values in Python? if my_var is None: print("Variable is None") 2024-09-04
2558 How do you check for null values in C++? if (ptr == nullptr) { std::cout << "Pointer is null" << std::endl; } 2024-09-04
2559 How do you write a for loop in Python? for i in range(10): print(i) 2024-09-04
2560 How do you write a for loop in JavaScript? for (let i = 0; i < 10; i++) { console.log(i); } 2024-09-04
2561 How do you write a for loop in Java? for (int i = 0; i < 10; i++) { System.out.println(i); } 2024-09-04
2562 How do you write a for loop in C++? for (int i = 0; i < 10; i++) { std::cout << i << std::endl; } 2024-09-04
2563 How do you write a while loop in Python? i = 0 while i < 10: print(i) i += 1 2024-09-04
2564 How do you write a while loop in JavaScript? let i = 0; while (i < 10) { console.log(i); i++; } 2024-09-04
2565 How do you write a while loop in Java? int i = 0; while (i < 10) { System.out.println(i); i++; } 2024-09-04
2566 How do you write a while loop in C++? int i = 0; while (i < 10) { std::cout << i << std::endl; i++; } 2024-09-04
2567 How do you write a switch statement in Python? Python does not have a switch statement; use if-elif-else instead. 2024-09-04
2568 How do you write a switch statement in JavaScript? switch (value) { case 1: console.log("One"); break; default: console.log("Default"); } 2024-09-04
2569 How do you write a switch statement in Java? switch (value) { case 1: System.out.println("One"); break; default: System.out.println("Default"); } 2024-09-04
2570 How do you write a switch statement in C++? switch (value) { case 1: std::cout << "One" << std::endl; break; default: std::cout << "Default" << std::endl; } 2024-09-04
2571 How do you define a class in Python? class MyClass: def __init__(self, value): self.value = value 2024-09-04
2572 How do you define a class in JavaScript? class MyClass { constructor(value) { this.value = value; } } 2024-09-04
2573 How do you define a class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } } 2024-09-04
2574 How do you define a class in C++? class MyClass { int value; public: MyClass(int value) : value(value) {} }; 2024-09-04
2575 How do you create an object of a class in Python? obj = MyClass(10) 2024-09-04
2576 How do you create an object of a class in JavaScript? let obj = new MyClass(10); 2024-09-04
2577 How do you create an object of a class in Java? MyClass obj = new MyClass(10); 2024-09-04
2578 How do you create an object of a class in C++? MyClass obj(10); 2024-09-04
2579 How do you implement inheritance in Python? class ChildClass(ParentClass): pass 2024-09-04
2580 How do you implement inheritance in JavaScript? class ChildClass extends ParentClass { constructor() { super(); } } 2024-09-04
2581 How do you implement inheritance in Java? public class ChildClass extends ParentClass { // class body } 2024-09-04
2582 How do you implement inheritance in C++? class ChildClass : public ParentClass { // class body }; 2024-09-04
2583 How do you override a method in Python? class MyClass: def my_method(self): print("Original") def my_method(self): print("Overridden") 2024-09-04
2584 How do you override a method in JavaScript? class MyClass { myMethod() { console.log("Original"); } } class ChildClass extends MyClass { myMethod() { console.log("Overridden"); } } 2024-09-04
2585 How do you override a method in Java? class MyClass { void myMethod() { System.out.println("Original"); } } class ChildClass extends MyClass { @Override void myMethod() { System.out.println("Overridden"); } } 2024-09-04
2586 How do you override a method in C++? class MyClass { public: virtual void myMethod() { std::cout << "Original" << std::endl; } }; class ChildClass : public MyClass { public: void myMethod() override { std::cout << "Overridden" << std::endl; } }; 2024-09-04
2587 How do you define a list in Python? my_list = [1, 2, 3] 2024-09-04
2588 How do you define an array in JavaScript? let arr = [1, 2, 3]; 2024-09-04
2589 How do you define an array in Java? int[] arr = {1, 2, 3}; 2024-09-04
2590 How do you define an array in C++? int arr[] = {1, 2, 3}; 2024-09-04
2591 How do you access elements in a list in Python? element = my_list[0] 2024-09-04
2592 How do you access elements in an array in JavaScript? let element = arr[0]; 2024-09-04
2593 How do you access elements in an array in Java? int element = arr[0]; 2024-09-04
2594 How do you access elements in an array in C++? int element = arr[0]; 2024-09-04
2595 How do you append to a list in Python? my_list.append(4) 2024-09-04
2596 How do you append to an array in JavaScript? arr.push(4); 2024-09-04
2597 How do you append to an array in Java? List list = new ArrayList<>(); list.add(4); 2024-09-04
2598 How do you append to an array in C++? std::vector vec = {1, 2, 3}; vec.push_back(4); 2024-09-04
2599 How do you remove an element from a list in Python? my_list.remove(4) 2024-09-04
2600 How do you remove an element from an array in JavaScript? arr.splice(index, 1); 2024-09-04
2601 How do you remove an element from an array in Java? list.remove(Integer.valueOf(4)); 2024-09-04
2602 How do you remove an element from an array in C++? vec.erase(vec.begin() + index); 2024-09-04
2603 How do you sort a list in Python? my_list.sort() 2024-09-04
2604 How do you sort an array in JavaScript? arr.sort() 2024-09-04
2605 How do you sort a list in Java? Collections.sort(list); 2024-09-04
2606 How do you sort a vector in C++? std::sort(vec.begin(), vec.end()); 2024-09-04
2607 How do you find the length of a list in Python? length = len(my_list) 2024-09-04
2608 How do you find the length of an array in JavaScript? let length = arr.length; 2024-09-04
2609 How do you find the length of a list in Java? int length = list.size(); 2024-09-04
2610 How do you find the size of a vector in C++? size_t size = vec.size(); 2024-09-04
2611 How do you concatenate strings in Python? result = str1 + str2 2024-09-04
2612 How do you concatenate strings in JavaScript? let result = str1 + str2; 2024-09-04
2613 How do you concatenate strings in Java? String result = str1 + str2; 2024-09-04
2614 How do you concatenate strings in C++? std::string result = str1 + str2; 2024-09-04
2615 How do you convert a string to an integer in Python? num = int(my_string) 2024-09-04
2616 How do you convert a string to an integer in JavaScript? let num = parseInt(myString); 2024-09-04
2617 How do you convert a string to an integer in Java? int num = Integer.parseInt(myString); 2024-09-04
2618 How do you convert a string to an integer in C++? int num = std::stoi(myString); 2024-09-04
2619 How do you convert an integer to a string in Python? my_string = str(num) 2024-09-04
2620 How do you convert an integer to a string in JavaScript? let myString = num.toString(); 2024-09-04
2621 How do you convert an integer to a string in Java? String myString = Integer.toString(num); 2024-09-04
2622 How do you convert an integer to a string in C++? std::string myString = std::to_string(num); 2024-09-04
2623 How do you check if a string contains a substring in Python? contains = substring in my_string 2024-09-04
2624 How do you check if a string contains a substring in JavaScript? let contains = myString.includes(substring); 2024-09-04
2625 How do you check if a string contains a substring in Java? boolean contains = myString.contains(substring); 2024-09-04
2626 How do you check if a string contains a substring in C++? bool contains = myString.find(substring) != std::string::npos; 2024-09-04
2627 How do you split a string in Python? parts = my_string.split(delimiter) 2024-09-04
2628 How do you split a string in JavaScript? let parts = myString.split(delimiter); 2024-09-04
2629 How do you split a string in Java? String[] parts = myString.split(delimiter); 2024-09-04
2630 How do you split a string in C++? std::vector parts; std::istringstream iss(myString); std::string part; while (std::getline(iss, part, delimiter)) { parts.push_back(part); } 2024-09-04
2631 How do you join a list into a string in Python? result = delimiter.join(my_list) 2024-09-04
2632 How do you join an array into a string in JavaScript? let result = arr.join(delimiter); 2024-09-04
2633 How do you join a list into a string in Java? String result = String.join(delimiter, list); 2024-09-04
2634 How do you join a vector into a string in C++? std::string result; for (const auto& s : vec) { if (!result.empty()) result += delimiter; result += s; } 2024-09-04
2635 How do you create a class in Python? class MyClass: def __init__(self, value): self.value = value 2024-09-04
2636 How do you create a class in JavaScript? class MyClass { constructor(value) { this.value = value; } } 2024-09-04
2637 How do you create a class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } } 2024-09-04
2638 How do you create a class in C++? class MyClass { int value; public: MyClass(int value) : value(value) {} }; 2024-09-04
2639 How do you create a function in Python? def my_function(param): return param * 2 2024-09-04
2640 How do you create a function in JavaScript? function myFunction(param) { return param * 2; } 2024-09-04
2641 How do you create a function in Java? public int myFunction(int param) { return param * 2; } 2024-09-04
2642 How do you create a function in C++? int myFunction(int param) { return param * 2; } 2024-09-04
2643 How do you call a function in Python? result = my_function(5) 2024-09-04
2644 How do you call a function in JavaScript? let result = myFunction(5); 2024-09-04
2645 How do you call a function in Java? int result = myFunction(5); 2024-09-04
2646 How do you call a function in C++? int result = myFunction(5); 2024-09-04
2647 How do you handle exceptions in Python? try: # code that may raise an exception except Exception as e: # handle exception 2024-09-04
2648 How do you handle exceptions in JavaScript? try { // code that may throw an exception } catch (e) { // handle exception } 2024-09-04
2649 How do you handle exceptions in Java? try { // code that may throw an exception } catch (Exception e) { // handle exception } 2024-09-04
2650 How do you handle exceptions in C++? try { // code that may throw an exception } catch (const std::exception& e) { // handle exception } 2024-09-04
2651 How do you iterate over a list in Python? for item in my_list: # process item 2024-09-04
2652 How do you iterate over an array in JavaScript? for (let item of arr) { // process item } 2024-09-04
2653 How do you iterate over a list in Java? for (String item : list) { // process item } 2024-09-04
2654 How do you iterate over a vector in C++? for (const auto& item : vec) { // process item } 2024-09-04
2655 How do you get the current date and time in Python? from datetime import datetime now = datetime.now() 2024-09-04
2656 How do you get the current date and time in JavaScript? let now = new Date(); 2024-09-04
2657 How do you get the current date and time in Java? import java.time.LocalDateTime; LocalDateTime now = LocalDateTime.now(); 2024-09-04
2658 How do you get the current date and time in C++? #include std::time_t now = std::time(0); 2024-09-04
2659 How do you create a loop in Python? for i in range(5): # code to execute 2024-09-04
2660 How do you create a loop in JavaScript? for (let i = 0; i < 5; i++) { // code to execute } 2024-09-04
2661 How do you create a loop in Java? for (int i = 0; i < 5; i++) { // code to execute } 2024-09-04
2662 How do you create a loop in C++? for (int i = 0; i < 5; i++) { // code to execute } 2024-09-04
2663 How do you use a conditional statement in Python? if x > 10: # code to execute 2024-09-04
2664 How do you use a conditional statement in JavaScript? if (x > 10) { // code to execute } 2024-09-04
2665 How do you use a conditional statement in Java? if (x > 10) { // code to execute } 2024-09-04
2666 How do you use a conditional statement in C++? if (x > 10) { // code to execute } 2024-09-04
2667 How do you create a dictionary in Python? my_dict = {"key1": "value1", "key2": "value2"} 2024-09-04
2668 How do you create an object in JavaScript? let myObject = {key1: "value1", key2: "value2"}; 2024-09-04
2669 How do you create a map in Java? Map myMap = new HashMap<>(); myMap.put("key1", "value1"); 2024-09-04
2670 How do you create a map in C++? std::map myMap; myMap["key1"] = "value1"; 2024-09-04
2671 How do you add an item to a list in Python? my_list.append(item) 2024-09-04
2672 How do you add an item to an array in JavaScript? arr.push(item); 2024-09-04
2673 How do you add an item to a list in Java? list.add(item); 2024-09-04
2674 How do you add an item to a vector in C++? vec.push_back(item); 2024-09-04
2675 How do you read from a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
2676 How do you read from a file in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
2677 How do you read from a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("file.txt"))); 2024-09-04
2678 How do you read from a file in C++? #include std::ifstream file("file.txt"); std::string content; if (file.is_open()) { std::getline(file, content); file.close(); } 2024-09-04
2679 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello, World!") 2024-09-04
2680 How do you write to a file in JavaScript? const fs = require("fs"); fs.writeFile("file.txt", "Hello, World!", (err) => { if (err) throw err; console.log("File saved!"); }); 2024-09-04
2681 How do you write to a file in Java? import java.nio.file.Files; import java.nio.file.Paths; Files.write(Paths.get("file.txt"), "Hello, World!".getBytes()); 2024-09-04
2682 How do you write to a file in C++? #include std::ofstream file("file.txt"); if (file.is_open()) { file << "Hello, World!"; file.close(); } 2024-09-04
2683 How do you handle exceptions in Python? try: # code that may raise an exception except ExceptionType as e: # code to handle the exception 2024-09-04
2684 How do you handle exceptions in JavaScript? try { // code that may throw an exception } catch (e) { // code to handle the exception } 2024-09-04
2685 How do you handle exceptions in Java? try { // code that may throw an exception } catch (Exception e) { // code to handle the exception } 2024-09-04
2686 How do you handle exceptions in C++? #include try { // code that may throw an exception } catch (const std::exception& e) { // code to handle the exception } 2024-09-04
2687 How do you create a function in Python? def function_name(parameters): # code to execute 2024-09-04
2688 How do you create a function in JavaScript? function functionName(parameters) { // code to execute } 2024-09-04
2689 How do you create a function in Java? public returnType functionName(parameters) { // code to execute } 2024-09-04
2690 How do you create a function in C++? returnType functionName(parameters) { // code to execute } 2024-09-04
2691 How do you define a class in Python? class ClassName: def __init__(self, parameters): # initialization code 2024-09-04
2692 How do you define a class in JavaScript? class ClassName { constructor(parameters) { // initialization code } } 2024-09-04
2693 How do you define a class in Java? public class ClassName { public ClassName(parameters) { // initialization code } } 2024-09-04
2694 How do you define a class in C++? class ClassName { public: ClassName(parameters) { // initialization code } }; 2024-09-04
2695 How do you perform string concatenation in Python? str1 + str2 2024-09-04
2696 How do you perform string concatenation in JavaScript? str1 + str2 2024-09-04
2697 How do you perform string concatenation in Java? str1 + str2 2024-09-04
2698 How do you perform string concatenation in C++? str1 + str2 2024-09-04
2699 How do you create a list in Python? my_list = [item1, item2, item3] 2024-09-04
2700 How do you create an array in JavaScript? let myArray = [item1, item2, item3]; 2024-09-04
2701 How do you create an ArrayList in Java? ArrayList list = new ArrayList<>(); 2024-09-04
2702 How do you create a vector in C++? #include std::vector vec; 2024-09-04
2703 How do you sort a list in Python? my_list.sort() 2024-09-04
2704 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
2705 How do you sort a list in Java? Collections.sort(list); 2024-09-04
2706 How do you sort a vector in C++? #include std::sort(vec.begin(), vec.end()); 2024-09-04
2707 How do you remove an item from a list in Python? my_list.remove(item) 2024-09-04
2708 How do you remove an item from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
2709 How do you remove an item from a list in Java? list.remove(item); 2024-09-04
2710 How do you remove an item from a vector in C++? vec.erase(vec.begin() + index); 2024-09-04
2711 How do you check for equality of two strings in Python? str1 == str2 2024-09-04
2712 How do you check for equality of two strings in JavaScript? str1 === str2 2024-09-04
2713 How do you check for equality of two strings in Java? str1.equals(str2) 2024-09-04
2714 How do you check for equality of two strings in C++? str1 == str2 2024-09-04
2715 How do you find the length of a string in Python? len(my_string) 2024-09-04
2716 How do you find the length of a string in JavaScript? myString.length 2024-09-04
2717 How do you find the length of a string in Java? myString.length() 2024-09-04
2718 How do you find the length of a string in C++? myString.length() 2024-09-04
2719 How do you append to a string in Python? my_string += " appended text" 2024-09-04
2720 How do you append to a string in JavaScript? myString += " appended text" 2024-09-04
2721 How do you append to a string in Java? myString += " appended text" 2024-09-04
2722 How do you append to a string in C++? myString += " appended text" 2024-09-04
2723 How do you find a substring in Python? my_string.find("substring") 2024-09-04
2724 How do you find a substring in JavaScript? myString.indexOf("substring") 2024-09-04
2725 How do you find a substring in Java? myString.indexOf("substring") 2024-09-04
2726 How do you find a substring in C++? myString.find("substring") 2024-09-04
2727 How do you split a string in Python? my_string.split("delimiter") 2024-09-04
2728 How do you split a string in JavaScript? myString.split("delimiter") 2024-09-04
2729 How do you split a string in Java? myString.split("delimiter") 2024-09-04
2730 How do you split a string in C++? std::stringstream ss(myString); std::string token; while (std::getline(ss, token, delimiter)) { // process token } 2024-09-04
2731 How do you convert a string to an integer in Python? int(my_string) 2024-09-04
2732 How do you convert a string to an integer in JavaScript? parseInt(myString) 2024-09-04
2733 How do you convert a string to an integer in Java? Integer.parseInt(myString) 2024-09-04
2734 How do you convert a string to an integer in C++? std::stoi(myString) 2024-09-04
2735 How do you convert an integer to a string in Python? str(my_integer) 2024-09-04
2736 How do you convert an integer to a string in JavaScript? myInteger.toString() 2024-09-04
2737 How do you convert an integer to a string in Java? String.valueOf(myInteger) 2024-09-04
2738 How do you convert an integer to a string in C++? std::to_string(myInteger) 2024-09-04
2739 How do you check if a string contains a substring in Python? "substring" in my_string 2024-09-04
2740 How do you check if a string contains a substring in JavaScript? myString.includes("substring") 2024-09-04
2741 How do you check if a string contains a substring in Java? myString.contains("substring") 2024-09-04
2742 How do you check if a string contains a substring in C++? myString.find("substring") != std::string::npos 2024-09-04
2743 How do you replace a substring in Python? my_string.replace("old", "new") 2024-09-04
2744 How do you replace a substring in JavaScript? myString.replace("old", "new") 2024-09-04
2745 How do you replace a substring in Java? myString.replace("old", "new") 2024-09-04
2746 How do you replace a substring in C++? std::string newString = myString; size_t pos = newString.find("old"); if (pos != std::string::npos) { newString.replace(pos, old.length(), "new"); } 2024-09-04
2747 How do you perform basic file I/O in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
2748 How do you perform basic file I/O in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
2749 How do you perform basic file I/O in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("file.txt"))); 2024-09-04
2750 How do you perform basic file I/O in C++? #include std::ifstream file("file.txt"); std::string content; if (file.is_open()) { std::getline(file, content); file.close(); } 2024-09-04
2751 How do you perform basic string formatting in Python? f"Hello, {name}" 2024-09-04
2752 How do you perform basic string formatting in JavaScript? `Hello, ${name}` 2024-09-04
2753 How do you perform basic string formatting in Java? String.format("Hello, %s", name) 2024-09-04
2754 How do you perform basic string formatting in C++? std::format("Hello, {}", name) 2024-09-04
2755 How do you create a loop in Python? for item in iterable: # code to execute 2024-09-04
2756 How do you create a loop in JavaScript? for (let i = 0; i < count; i++) { // code to execute } 2024-09-04
2757 How do you create a loop in Java? for (int i = 0; i < count; i++) { // code to execute } 2024-09-04
2758 How do you create a loop in C++? for (int i = 0; i < count; i++) { // code to execute } 2024-09-04
2759 How do you use a switch statement in Python? Python does not have a switch statement. Use if-elif-else instead. 2024-09-04
2760 How do you use a switch statement in JavaScript? switch (expression) { case value1: // code to execute break; case value2: // code to execute break; default: // code to execute } 2024-09-04
2761 How do you use a switch statement in Java? switch (expression) { case value1: // code to execute break; case value2: // code to execute break; default: // code to execute } 2024-09-04
2762 How do you use a switch statement in C++? switch (expression) { case value1: // code to execute break; case value2: // code to execute break; default: // code to execute } 2024-09-04
2763 How do you define a function in Python? def my_function(parameters): # code to execute 2024-09-04
2764 How do you define a function in JavaScript? function myFunction(parameters) { // code to execute } 2024-09-04
2765 How do you define a function in Java? returnType myFunction(parameters) { // code to execute } 2024-09-04
2766 How do you define a function in C++? returnType myFunction(parameters) { // code to execute } 2024-09-04
2767 How do you return a value from a function in Python? return value 2024-09-04
2768 How do you return a value from a function in JavaScript? return value; 2024-09-04
2769 How do you return a value from a function in Java? return value; 2024-09-04
2770 How do you return a value from a function in C++? return value; 2024-09-04
2771 How do you handle exceptions in Python? try: # code that might raise an exception except ExceptionType as e: # code to handle the exception 2024-09-04
2772 How do you handle exceptions in JavaScript? try { // code that might throw an exception } catch (e) { // code to handle the exception } 2024-09-04
2773 How do you handle exceptions in Java? try { // code that might throw an exception } catch (ExceptionType e) { // code to handle the exception } 2024-09-04
2774 How do you handle exceptions in C++? try { // code that might throw an exception } catch (ExceptionType& e) { // code to handle the exception } 2024-09-04
2775 How do you perform unit testing in Python? import unittest class MyTestCase(unittest.TestCase): def test_something(self): self.assertEqual(1, 1) 2024-09-04
2776 How do you perform unit testing in JavaScript? const assert = require("assert"); describe("MyTestSuite", function() { it("should pass", function() { assert.strictEqual(1, 1); }); }); 2024-09-04
2777 How do you perform unit testing in Java? import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; class MyTest { @Test void testSomething() { assertEquals(1, 1); } } 2024-09-04
2778 How do you perform unit testing in C++? #include TEST(MyTestSuite, TestSomething) { EXPECT_EQ(1, 1); } 2024-09-04
2779 How do you perform basic debugging in Python? Use print statements or a debugger like pdb. 2024-09-04
2780 How do you perform basic debugging in JavaScript? Use console.log() statements or a debugger like the one in your browser's developer tools. 2024-09-04
2781 How do you perform basic debugging in Java? Use System.out.println() statements or a debugger in your IDE. 2024-09-04
2782 How do you perform basic debugging in C++? Use std::cout statements or a debugger like gdb. 2024-09-04
2783 How do you concatenate strings in Python? my_string = str1 + str2 2024-09-04
2784 How do you concatenate strings in JavaScript? let myString = str1 + str2; 2024-09-04
2785 How do you concatenate strings in Java? String myString = str1 + str2; 2024-09-04
2786 How do you concatenate strings in C++? std::string myString = str1 + str2; 2024-09-04
2787 How do you check the length of a string in Python? len(my_string) 2024-09-04
2788 How do you check the length of a string in JavaScript? myString.length 2024-09-04
2789 How do you check the length of a string in Java? myString.length() 2024-09-04
2790 How do you check the length of a string in C++? myString.length() 2024-09-04
2791 How do you sort a list in Python? my_list.sort() 2024-09-04
2792 How do you sort an array in JavaScript? myArray.sort() 2024-09-04
2793 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-04
2794 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-04
2795 How do you append to a list in Python? my_list.append(item) 2024-09-04
2796 How do you append to an array in JavaScript? myArray.push(item); 2024-09-04
2797 How do you append to a list in Java? myList.add(item); 2024-09-04
2798 How do you append to a vector in C++? myVector.push_back(item); 2024-09-04
2799 How do you remove an item from a list in Python? my_list.remove(item) 2024-09-04
2800 How do you remove an item from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
2801 How do you remove an item from a list in Java? myList.remove(item); 2024-09-04
2802 How do you remove an item from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
2803 How do you find an item in a list in Python? index = my_list.index(item) 2024-09-04
2804 How do you find an item in an array in JavaScript? let index = myArray.indexOf(item); 2024-09-04
2805 How do you find an item in a list in Java? int index = myList.indexOf(item); 2024-09-04
2806 How do you find an item in a vector in C++? auto it = std::find(myVector.begin(), myVector.end(), item); 2024-09-04
2807 How do you create a class in Python? class MyClass: def __init__(self, value): self.value = value 2024-09-04
2808 How do you create a class in JavaScript? class MyClass { constructor(value) { this.value = value; } } 2024-09-04
2809 How do you create a class in Java? class MyClass { private int value; public MyClass(int value) { this.value = value; } } 2024-09-04
2810 How do you create a class in C++? class MyClass { int value; public: MyClass(int value) : value(value) {} }; 2024-09-04
2811 How do you inherit a class in Python? class MyChildClass(MyClass): def __init__(self, value, extra_value): super().__init__(value) self.extra_value = extra_value 2024-09-04
2812 How do you inherit a class in JavaScript? class MyChildClass extends MyClass { constructor(value, extraValue) { super(value); this.extraValue = extraValue; } } 2024-09-04
2813 How do you inherit a class in Java? class MyChildClass extends MyClass { private int extraValue; public MyChildClass(int value, int extraValue) { super(value); this.extraValue = extraValue; } } 2024-09-04
2814 How do you inherit a class in C++? class MyChildClass : public MyClass { int extraValue; public: MyChildClass(int value, int extraValue) : MyClass(value), extraValue(extraValue) {} }; 2024-09-04
2815 How do you override a method in Python? class MyChildClass(MyClass): def my_method(self): return "Overridden method" 2024-09-04
2816 How do you override a method in JavaScript? class MyChildClass extends MyClass { myMethod() { return "Overridden method"; } } 2024-09-04
2817 How do you override a method in Java? class MyChildClass extends MyClass { @Override void myMethod() { System.out.println("Overridden method"); } } 2024-09-04
2818 How do you override a method in C++? class MyChildClass : public MyClass { void myMethod() override { std::cout << "Overridden method" << std::endl; } }; 2024-09-04
2819 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
2820 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
2821 How do you read a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("file.txt"))); 2024-09-04
2822 How do you read a file in C++? #include std::ifstream file("file.txt"); std::string content; if (file) { std::getline(file, content); } 2024-09-04
2823 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello, world!") 2024-09-04
2824 How do you write to a file in JavaScript? const fs = require("fs"); fs.writeFile("file.txt", "Hello, world!", (err) => { if (err) throw err; }); 2024-09-04
2825 How do you write to a file in Java? import java.io.FileWriter; try (FileWriter writer = new FileWriter("file.txt")) { writer.write("Hello, world!"); } 2024-09-04
2826 How do you write to a file in C++? #include std::ofstream file("file.txt"); if (file) { file << "Hello, world!"; } 2024-09-04
2827 How do you create an array in Python? my_list = [1, 2, 3] 2024-09-04
2828 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
2829 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-04
2830 How do you create an array in C++? int myArray[] = {1, 2, 3}; 2024-09-04
2831 How do you iterate over an array in Python? for item in my_list: print(item) 2024-09-04
2832 How do you iterate over an array in JavaScript? myArray.forEach(item => { console.log(item); }); 2024-09-04
2833 How do you iterate over an array in Java? for (int item : myArray) { System.out.println(item); } 2024-09-04
2834 How do you iterate over an array in C++? for (int item : myArray) { std::cout << item << std::endl; } 2024-09-04
2835 How do you perform a linear search in Python? for index, item in enumerate(my_list): if item == search_value: return index 2024-09-04
2836 How do you perform a linear search in JavaScript? for (let i = 0; i < myArray.length; i++) { if (myArray[i] === searchValue) { return i; } } 2024-09-04
2837 How do you perform a linear search in Java? for (int i = 0; i < myArray.length; i++) { if (myArray[i] == searchValue) { return i; } } 2024-09-04
2838 How do you perform a linear search in C++? for (int i = 0; i < myArray.size(); i++) { if (myArray[i] == searchValue) { return i; } } 2024-09-04
2839 How do you perform a binary search in Python? import bisect index = bisect.bisect_left(my_list, search_value) 2024-09-04
2840 How do you perform a binary search in JavaScript? function binarySearch(arr, target) { let left = 0, right = arr.length - 1; while (left <= right) { let mid = Math.floor((left + right) / 2); if (arr[mid] === target) { return mid; } if (arr[mid] < target) { left = mid + 1; } else { right = mid - 1; } } return -1; } 2024-09-04
2841 How do you perform a binary search in Java? int binarySearch(int[] arr, int target) { int left = 0, right = arr.length - 1; while (left <= right) { int mid = left + (right - left) / 2; if (arr[mid] == target) { return mid; } if (arr[mid] < target) { left = mid + 1; } else { right = mid - 1; } } return -1; } 2024-09-04
2842 How do you perform a binary search in C++? int binarySearch(std::vector& arr, int target) { int left = 0, right = arr.size() - 1; while (left <= right) { int mid = left + (right - left) / 2; if (arr[mid] == target) { return mid; } if (arr[mid] < target) { left = mid + 1; } else { right = mid - 1; } } return -1; } 2024-09-04
2843 How do you handle exceptions in Python? try: # code that may raise an exception except Exception as e: # handle exception 2024-09-04
2844 How do you handle exceptions in JavaScript? try { // code that may throw an error } catch (e) { // handle error } 2024-09-04
2845 How do you handle exceptions in Java? try { // code that may throw an exception } catch (Exception e) { // handle exception } 2024-09-04
2846 How do you handle exceptions in C++? try { // code that may throw an exception } catch (const std::exception& e) { // handle exception } 2024-09-04
2847 How do you check if a file exists in Python? import os os.path.exists("file.txt") 2024-09-04
2848 How do you check if a file exists in JavaScript? const fs = require("fs"); fs.access("file.txt", fs.constants.F_OK, (err) => { if (err) { console.log("File does not exist"); } else { console.log("File exists"); } }); 2024-09-04
2849 How do you check if a file exists in Java? import java.io.File; File file = new File("file.txt"); if (file.exists()) { System.out.println("File exists"); } else { System.out.println("File does not exist"); } 2024-09-04
2850 How do you check if a file exists in C++? #include std::ifstream file("file.txt"); if (file) { std::cout << "File exists" << std::endl; } else { std::cout << "File does not exist" << std::endl; } 2024-09-04
2851 How do you create a thread in Python? import threading class MyThread(threading.Thread): def run(self): print("Thread running") thread = MyThread() thread.start() 2024-09-04
2852 How do you create a thread in JavaScript? const thread = new Worker("worker.js"); 2024-09-04
2853 How do you create a thread in Java? class MyThread extends Thread { public void run() { System.out.println("Thread running"); } } MyThread thread = new MyThread(); thread.start(); 2024-09-04
2854 How do you create a thread in C++? #include void myFunction() { std::cout << "Thread running" << std::endl; } std::thread t(myFunction); 2024-09-04
2855 How do you synchronize threads in Python? import threading lock = threading.Lock() def thread_safe_function(): with lock: # critical section 2024-09-04
2856 How do you synchronize threads in JavaScript? const mutex = new Mutex(); await mutex.lock(); // critical section mutex.unlock(); 2024-09-04
2857 How do you synchronize threads in Java? import java.util.concurrent.locks.ReentrantLock; ReentrantLock lock = new ReentrantLock(); void threadSafeMethod() { lock.lock(); try { // critical section } finally { lock.unlock(); } } 2024-09-04
2858 How do you synchronize threads in C++? #include std::mutex mtx; void threadSafeFunction() { std::lock_guard lock(mtx); // critical section } 2024-09-04
2859 How do you perform a database query in Python? import sqlite3 conn = sqlite3.connect("example.db") cursor = conn.cursor() cursor.execute("SELECT * FROM table") rows = cursor.fetchall() conn.close() 2024-09-04
2860 How do you perform a database query in JavaScript? const { Client } = require("pg"); const client = new Client(); client.connect(); client.query("SELECT * FROM table", (err, res) => { if (err) throw err; console.log(res.rows); client.end(); }); 2024-09-04
2861 How do you perform a database query in Java? import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; Connection conn = DriverManager.getConnection("jdbc:example"); Statement stmt = conn.createStatement(); ResultSet rs = stmt.executeQuery("SELECT * FROM table"); while (rs.next()) { System.out.println(rs.getString("column")); } conn.close(); 2024-09-04
2862 How do you perform a database query in C++? #include sqlite3 *db; sqlite3_open("example.db", &db); char *errMsg; const char *sql = "SELECT * FROM table"; sqlite3_exec(db, sql, callback, 0, &errMsg); if (errMsg) { std::cerr << errMsg << std::endl; sqlite3_free(errMsg); } sqlite3_close(db); 2024-09-04
2863 How do you create a class in Python? class MyClass: def __init__(self, value): self.value = value 2024-09-04
2864 How do you create a class in JavaScript? class MyClass { constructor(value) { this.value = value; } } 2024-09-04
2865 How do you create a class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } } 2024-09-04
2866 How do you create a class in C++? class MyClass { int value; public: MyClass(int v) : value(v) {} }; 2024-09-04
2867 How do you inherit a class in Python? class MySubClass(MyClass): def __init__(self, value, extra): super().__init__(value) self.extra = extra 2024-09-04
2868 How do you inherit a class in JavaScript? class MySubClass extends MyClass { constructor(value, extra) { super(value); this.extra = extra; } } 2024-09-04
2869 How do you inherit a class in Java? public class MySubClass extends MyClass { private int extra; public MySubClass(int value, int extra) { super(value); this.extra = extra; } } 2024-09-04
2870 How do you inherit a class in C++? class MySubClass : public MyClass { int extra; public: MySubClass(int v, int e) : MyClass(v), extra(e) {} }; 2024-09-04
2871 How do you define a method in Python? def my_method(self, arg): # method code 2024-09-04
2872 How do you define a method in JavaScript? myMethod(arg) { // method code } 2024-09-04
2873 How do you define a method in Java? public void myMethod(int arg) { // method code } 2024-09-04
2874 How do you define a method in C++? void myMethod(int arg) { // method code } 2024-09-04
2875 How do you create an object in Python? obj = MyClass(value) 2024-09-04
2876 How do you create an object in JavaScript? const obj = new MyClass(value); 2024-09-04
2877 How do you create an object in Java? MyClass obj = new MyClass(value); 2024-09-04
2878 How do you create an object in C++? MyClass obj(value); 2024-09-04
2879 How do you access a class member in Python? obj.value 2024-09-04
2880 How do you access a class member in JavaScript? obj.value; 2024-09-04
2881 How do you access a class member in Java? obj.value; 2024-09-04
2882 How do you access a class member in C++? obj.value; 2024-09-04
2883 How do you use a list in Python? my_list = [1, 2, 3] 2024-09-04
2884 How do you use an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
2885 How do you use an array in Java? int[] myArray = {1, 2, 3}; 2024-09-04
2886 How do you use a vector in C++? #include std::vector myVector = {1, 2, 3}; 2024-09-04
2887 How do you add an element to a list in Python? my_list.append(element) 2024-09-04
2888 How do you add an element to an array in JavaScript? myArray.push(element); 2024-09-04
2889 How do you add an element to an array in Java? myArray[myArray.length] = element; 2024-09-04
2890 How do you add an element to a vector in C++? myVector.push_back(element); 2024-09-04
2891 How do you remove an element from a list in Python? my_list.remove(element) 2024-09-04
2892 How do you remove an element from an array in JavaScript? myArray.splice(index, 1); 2024-09-04
2893 How do you remove an element from an array in Java? for (int i = 0; i < myArray.length; i++) { if (myArray[i] == element) { // shift elements left } } 2024-09-04
2894 How do you remove an element from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-04
2895 How do you iterate over a list in Python? for item in my_list: print(item) 2024-09-04
2896 How do you iterate over an array in JavaScript? myArray.forEach(item => console.log(item)); 2024-09-04
2897 How do you iterate over an array in Java? for (int item : myArray) { System.out.println(item); } 2024-09-04
2898 How do you iterate over a vector in C++? for (int item : myVector) { std::cout << item << std::endl; } 2024-09-04
2899 How do you handle exceptions in Python? try: # code except Exception as e: print(e) 2024-09-04
2900 How do you handle exceptions in JavaScript? try { // code } catch (e) { console.error(e); } 2024-09-04
2901 How do you handle exceptions in Java? try { // code } catch (Exception e) { e.printStackTrace(); } 2024-09-04
2902 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { std::cerr << e.what() << std::endl; } 2024-09-04
2903 How do you connect to a database in Python? import sqlite3 conn = sqlite3.connect("example.db") 2024-09-04
2904 How do you connect to a database in JavaScript? const { Client } = require("pg"); const client = new Client(); client.connect(); 2024-09-04
2905 How do you connect to a database in Java? Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "user", "password"); 2024-09-04
2906 How do you connect to a database in C++? #include sqlite3 *db; sqlite3_open("example.db", &db); 2024-09-04
2907 How do you execute a query in Python? cursor.execute("SELECT * FROM table") 2024-09-04
2908 How do you execute a query in JavaScript? client.query("SELECT * FROM table", (err, res) => { /* handle result */ }); 2024-09-04
2909 How do you execute a query in Java? Statement stmt = conn.createStatement(); ResultSet rs = stmt.executeQuery("SELECT * FROM table"); 2024-09-04
2910 How do you execute a query in C++? char *sql = "SELECT * FROM table"; sqlite3_exec(db, sql, callback, 0, &errMsg); 2024-09-04
2911 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
2912 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { /* handle data */ }); 2024-09-04
2913 How do you read a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("file.txt"))); 2024-09-04
2914 How do you read a file in C++? #include std::ifstream file("file.txt"); std::string content((std::istreambuf_iterator(file)), std::istreambuf_iterator()); 2024-09-04
2915 How do you write to a file in Python? with open("file.txt", "w") as file: file.write("Hello, World!") 2024-09-04
2916 How do you write to a file in JavaScript? const fs = require("fs"); fs.writeFile("file.txt", "Hello, World!", (err) => { /* handle err */ }); 2024-09-04
2917 How do you write to a file in Java? import java.nio.file.Files; import java.nio.file.Paths; Files.write(Paths.get("file.txt"), "Hello, World!".getBytes()); 2024-09-04
2918 How do you write to a file in C++? #include std::ofstream file("file.txt"); file << "Hello, World!"; 2024-09-04
2919 How do you sort a list in Python? my_list.sort() 2024-09-04
2920 How do you sort an array in JavaScript? myArray.sort(); 2024-09-04
2921 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-04
2922 How do you sort a vector in C++? #include std::sort(myVector.begin(), myVector.end()); 2024-09-04
2923 How do you create a for loop in Python? for i in range(10): print(i) 2024-09-04
2924 How do you create a for loop in JavaScript? for (let i = 0; i < 10; i++) { console.log(i); } 2024-09-04
2925 How do you create a for loop in Java? for (int i = 0; i < 10; i++) { System.out.println(i); } 2024-09-04
2926 How do you create a for loop in C++? for (int i = 0; i < 10; i++) { std::cout << i << std::endl; } 2024-09-04
2927 How do you create a while loop in Python? while condition: # code 2024-09-04
2928 How do you create a while loop in JavaScript? while (condition) { // code } 2024-09-04
2929 How do you create a while loop in Java? while (condition) { // code } 2024-09-04
2930 How do you create a while loop in C++? while (condition) { // code } 2024-09-04
2931 How do you use recursion in Python? def factorial(n): if n == 0: return 1 else: return n * factorial(n-1) 2024-09-04
2932 How do you use recursion in JavaScript? function factorial(n) { if (n === 0) { return 1; } else { return n * factorial(n - 1); } } 2024-09-04
2933 How do you use recursion in Java? int factorial(int n) { if (n == 0) { return 1; } else { return n * factorial(n - 1); } } 2024-09-04
2934 How do you use recursion in C++? int factorial(int n) { if (n == 0) { return 1; } else { return n * factorial(n - 1); } } 2024-09-04
2935 How do you write a switch statement in Python? Python does not have a switch statement; use if-elif-else instead. 2024-09-04
2936 How do you write a switch statement in JavaScript? switch (value) { case 1: // code break; default: // code } 2024-09-04
2937 How do you write a switch statement in Java? switch (value) { case 1: // code break; default: // code } 2024-09-04
2938 How do you write a switch statement in C++? switch (value) { case 1: // code break; default: // code } 2024-09-04
2939 How do you use a hash map in Python? my_dict = {"key": "value"} 2024-09-04
2940 How do you use a hash map in JavaScript? const myMap = new Map(); myMap.set("key", "value"); 2024-09-04
2941 How do you use a hash map in Java? import java.util.HashMap; HashMap myMap = new HashMap<>(); myMap.put("key", "value"); 2024-09-04
2942 How do you use a hash map in C++? #include std::unordered_map myMap; myMap["key"] = "value"; 2024-09-04
2943 How do you use a set in Python? my_set = {1, 2, 3} 2024-09-04
2944 How do you use a set in JavaScript? const mySet = new Set([1, 2, 3]); 2024-09-04
2945 How do you use a set in Java? import java.util.HashSet; HashSet mySet = new HashSet<>(Arrays.asList(1, 2, 3)); 2024-09-04
2946 How do you use a set in C++? #include std::set mySet = {1, 2, 3}; 2024-09-04
2947 How do you use a queue in Python? from collections import deque my_queue = deque() 2024-09-04
2948 How do you use a queue in JavaScript? const myQueue = []; myQueue.push(item); myQueue.shift(); 2024-09-04
2949 How do you use a queue in Java? import java.util.LinkedList; LinkedList myQueue = new LinkedList<>(); myQueue.add(1); myQueue.remove(); 2024-09-04
2950 How do you use a queue in C++? #include std::queue myQueue; myQueue.push(1); myQueue.pop(); 2024-09-04
2951 How do you use a stack in Python? my_stack = [] my_stack.append(item) my_stack.pop() 2024-09-04
2952 How do you use a stack in JavaScript? const myStack = []; myStack.push(item); myStack.pop(); 2024-09-04
2953 How do you use a stack in Java? import java.util.Stack; Stack myStack = new Stack<>(); myStack.push(1); myStack.pop(); 2024-09-04
2954 How do you use a stack in C++? #include std::stack myStack; myStack.push(1); myStack.pop(); 2024-09-04
2955 How do you use a linked list in Python? class Node: def __init__(self, value): self.value = value self.next = None class LinkedList: def __init__(self): self.head = None 2024-09-04
2956 How do you use a linked list in JavaScript? class Node { constructor(value) { this.value = value; this.next = null; } } class LinkedList { constructor() { this.head = null; } } 2024-09-04
2957 How do you use a linked list in Java? class Node { int value; Node next; Node(int value) { this.value = value; this.next = null; } } class LinkedList { Node head; LinkedList() { this.head = null; } } 2024-09-04
2958 How do you use a linked list in C++? #include class Node { public: int value; Node* next; Node(int value) : value(value), next(nullptr) {} }; class LinkedList { public: Node* head; LinkedList() : head(nullptr) {} }; 2024-09-04
2959 How do you define a function in Python? def my_function(param): # code 2024-09-04
2960 How do you define a function in JavaScript? function myFunction(param) { // code } 2024-09-04
2961 How do you define a function in Java? public void myFunction(Type param) { // code } 2024-09-04
2962 How do you define a function in C++? void myFunction(Type param) { // code } 2024-09-04
2963 How do you create a class in Python? class MyClass: def __init__(self, param): self.param = param 2024-09-04
2964 How do you create a class in JavaScript? class MyClass { constructor(param) { this.param = param; } } 2024-09-04
2965 How do you create a class in Java? public class MyClass { private Type param; public MyClass(Type param) { this.param = param; } } 2024-09-04
2966 How do you create a class in C++? class MyClass { public: MyClass(Type param) : param(param) {} private: Type param; }; 2024-09-04
2967 How do you handle exceptions in Python? try: # code except Exception as e: # handle exception 2024-09-04
2968 How do you handle exceptions in JavaScript? try { // code } catch (e) { // handle exception } 2024-09-04
2969 How do you handle exceptions in Java? try { // code } catch (Exception e) { // handle exception } 2024-09-04
2970 How do you handle exceptions in C++? try { // code } catch (const std::exception& e) { // handle exception } 2024-09-04
2971 How do you use list comprehension in Python? [x for x in range(10) if x % 2 == 0] 2024-09-04
2972 How do you use array methods in JavaScript? const myArray = [1, 2, 3]; myArray.map(x => x * 2); 2024-09-04
2973 How do you use Streams in Java? List myList = Arrays.asList(1, 2, 3); myList.stream().filter(x -> x % 2 == 0).collect(Collectors.toList()); 2024-09-04
2974 How do you use STL algorithms in C++? #include #include std::vector v = {1, 2, 3}; std::sort(v.begin(), v.end()); 2024-09-04
2975 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() 2024-09-04
2976 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { /* handle data */ }); 2024-09-04
2977 How do you read a file in Java? import java.nio.file.Files; import java.nio.file.Paths; String content = new String(Files.readAllBytes(Paths.get("file.txt"))); 2024-09-04
2978 How do you read a file in C++? #include #include std::ifstream file("file.txt"); std::string content; std::getline(file, content); 2024-09-04
2979 How do you append to a file in Python? with open("file.txt", "a") as file: file.write("New line") 2024-09-04
2980 How do you append to a file in JavaScript? const fs = require("fs"); fs.appendFile("file.txt", "New line", (err) => { /* handle err */ }); 2024-09-04
2981 How do you append to a file in Java? import java.nio.file.Files; import java.nio.file.Paths; import java.nio.file.StandardOpenOption; Files.write(Paths.get("file.txt"), "New line".getBytes(), StandardOpenOption.APPEND); 2024-09-04
2982 How do you append to a file in C++? #include std::ofstream file("file.txt", std::ios::app); file << "New line"; 2024-09-04
2983 How do you create a thread in Python? import threading class MyThread(threading.Thread): def run(self): # code thread = MyThread() thread.start() 2024-09-04
2984 How do you create a thread in JavaScript? const worker = new Worker("worker.js"); 2024-09-04
2985 How do you create a thread in Java? public class MyThread extends Thread { public void run() { // code } } MyThread thread = new MyThread(); thread.start(); 2024-09-04
2986 How do you create a thread in C++? #include void myFunction() { // code } std::thread t(myFunction); t.join(); 2024-09-04
2987 How do you perform a GET request in Python? import requests response = requests.get("https://example.com") print(response.text) 2024-09-04
2988 How do you perform a GET request in JavaScript? fetch("https://example.com") .then(response => response.text()) .then(data => console.log(data)); 2024-09-04
2989 How do you perform a GET request in Java? import java.net.HttpURLConnection; import java.net.URL; URL url = new URL("https://example.com"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); 2024-09-04
2990 How do you perform a GET request in C++? #include CURL *curl = curl_easy_init(); curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); curl_easy_perform(curl); curl_easy_cleanup(curl); 2024-09-04
2991 How do you handle JSON in Python? import json data = json.loads('{"key": "value"}') print(data["key"]) 2024-09-04
2992 How do you handle JSON in JavaScript? const data = JSON.parse('{"key": "value"}'); console.log(data.key); 2024-09-04
2993 How do you handle JSON in Java? import org.json.JSONObject; JSONObject json = new JSONObject("{"key": "value"}"); System.out.println(json.getString("key")); 2024-09-04
2994 How do you handle JSON in C++? #include nlohmann::json json = nlohmann::json::parse("{"key": "value"}"); std::cout << json["key"] << std::endl; 2024-09-04
2995 How do you implement a binary search algorithm in Python? def binary_search(arr, target): left, right = 0, len(arr) - 1 while left <= right: mid = (left + right) // 2 if arr[mid] == target: return mid elif arr[mid] < target: left = mid + 1 else: right = mid - 1 return -1 2024-09-04
2996 How do you implement a binary search algorithm in JavaScript? function binarySearch(arr, target) { let left = 0, right = arr.length - 1; while (left <= right) { const mid = Math.floor((left + right) / 2); if (arr[mid] === target) return mid; if (arr[mid] < target) left = mid + 1; else right = mid - 1; } return -1; } 2024-09-04
2997 How do you implement a binary search algorithm in Java? public int binarySearch(int[] arr, int target) { int left = 0, right = arr.length - 1; while (left <= right) { int mid = (left + right) / 2; if (arr[mid] == target) return mid; if (arr[mid] < target) left = mid + 1; else right = mid - 1; } return -1; } 2024-09-04
2998 How do you implement a binary search algorithm in C++? #include int binarySearch(const std::vector& arr, int target) { int left = 0, right = arr.size() - 1; while (left <= right) { int mid = left + (right - left) / 2; if (arr[mid] == target) return mid; if (arr[mid] < target) left = mid + 1; else right = mid - 1; } return -1; } 2024-09-04
2999 How do you sort an array in Python? arr.sort() 2024-09-04
3000 How do you sort an array in JavaScript? const sortedArr = arr.sort((a, b) => a - b); 2024-09-04
3001 How do you sort an array in Java? Arrays.sort(arr); 2024-09-04
3002 How do you sort an array in C++? #include std::sort(arr.begin(), arr.end()); 2024-09-04
3003 How do you create a GUI application in Python? import tkinter as tk root = tk.Tk() root.title("My App") root.mainloop() 2024-09-04
3004 How do you create a GUI application in JavaScript? const { app, BrowserWindow } = require("electron"); let mainWindow; function createWindow() { mainWindow = new BrowserWindow({ width: 800, height: 600, }); mainWindow.loadFile("index.html"); } app.whenReady().then(createWindow); 2024-09-04
3005 How do you create a GUI application in Java? import javax.swing.JFrame; public class MyApp { public static void main(String[] args) { JFrame frame = new JFrame("My App"); frame.setSize(800, 600); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } } 2024-09-04
3006 How do you create a GUI application in C++? #include #include int main(int argc, char *argv[]) { QApplication app(argc, argv); QWidget window; window.setWindowTitle("My App"); window.resize(800, 600); window.show(); return app.exec(); } 2024-09-04
3007 How do you create a simple web server in Python? from http.server import SimpleHTTPRequestHandler, HTTPServer server = HTTPServer(("", 8000), SimpleHTTPRequestHandler) server.serve_forever() 2024-09-04
3008 How do you create a simple web server in JavaScript? const http = require("http"); const server = http.createServer((req, res) => { res.statusCode = 200; res.setHeader("Content-Type", "text/plain"); res.end("Hello World\n"); }); server.listen(3000, () => { console.log("Server running at http://127.0.0.1:3000/"); }); 2024-09-04
3009 How do you create a simple web server in Java? import com.sun.net.httpserver.HttpServer; import com.sun.net.httpserver.HttpHandler; import com.sun.net.httpserver.HttpExchange; public class MyServer { public static void main(String[] args) throws Exception { HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0); server.createContext("/", new MyHandler()); server.start(); } } class MyHandler implements HttpHandler { @Override public void handle(HttpExchange exchange) throws IOException { String response = "Hello World"; exchange.sendResponseHeaders(200, response.getBytes().length); OutputStream os = exchange.getResponseBody(); os.write(response.getBytes()); os.close(); } } 2024-09-04
3010 How do you create a simple web server in C++? #include #include using boost::asio::ip::tcp; int main() { boost::asio::io_context io_context; tcp::acceptor acceptor(io_context, tcp::endpoint(tcp::v4(), 8000)); tcp::socket socket(io_context); acceptor.accept(socket); std::string message = "Hello World\n"; boost::asio::write(socket, boost::asio::buffer(message)); return 0; } 2024-09-04
3011 How do you perform unit testing in Python? import unittest class MyTest(unittest.TestCase): def test_example(self): self.assertEqual(1 + 1, 2) if __name__ == "__main__": unittest.main() 2024-09-04
3012 How do you perform unit testing in JavaScript? const assert = require("assert"); function test() { assert.strictEqual(1 + 1, 2); } test(); 2024-09-04
3013 How do you perform unit testing in Java? import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; public class MyTest { @Test public void testExample() { assertEquals(2, 1 + 1); } } 2024-09-04
3014 How do you perform unit testing in C++? #include TEST(MyTest, Example) { EXPECT_EQ(2, 1 + 1); } int main(int argc, char **argv) { ::testing::InitGoogleTest(&argc, argv); return RUN_ALL_TESTS(); } 2024-09-04
3015 How do you connect to a database in Python? import sqlite3 conn = sqlite3.connect("example.db") cursor = conn.cursor() 2024-09-04
3016 How do you connect to a database in JavaScript? const mysql = require("mysql"); const connection = mysql.createConnection({ host: "localhost", user: "root", password: "", database: "example" }); connection.connect(); 2024-09-04
3017 How do you connect to a database in Java? import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; public class MyDatabase { public static void main(String[] args) throws SQLException { Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/example", "root", ""); } } 2024-09-04
3018 How do you connect to a database in C++? #include #include sql::mysql::MySQL_Driver *driver; sql::Connection *con; driver = sql::mysql::get_mysql_driver_instance(); con = driver->connect("tcp://127.0.0.1:3306", "root", ""); 2024-09-04
3019 How do you use environment variables in Python? import os api_key = os.getenv("API_KEY") 2024-09-04
3020 How do you use environment variables in JavaScript? const apiKey = process.env.API_KEY; 2024-09-04
3021 How do you use environment variables in Java? import java.lang.System; String apiKey = System.getenv("API_KEY"); 2024-09-04
3022 How do you use environment variables in C++? #include const char* apiKey = std::getenv("API_KEY"); 2024-09-04
3023 How do you handle exceptions in Python? try: # code except Exception as e: print(e) 2024-09-04
3024 How do you handle exceptions in JavaScript? try { // code } catch (e) { console.error(e); } 2024-09-04
3025 How do you handle exceptions in Java? try { // code } catch (Exception e) { e.printStackTrace(); } 2024-09-04
3026 How do you handle exceptions in C++? #include try { // code } catch (const std::exception& e) { std::cerr << e.what() << std::endl; } 2024-09-04
3027 How do you implement a stack in Python? class Stack: def __init__(self): self.items = [] def push(self, item): self.items.append(item) def pop(self): return self.items.pop() def peek(self): return self.items[-1] def is_empty(self): return len(self.items) == 0 2024-09-04
3028 How do you implement a stack in JavaScript? class Stack { constructor() { this.items = []; } push(item) { this.items.push(item); } pop() { return this.items.pop(); } peek() { return this.items[this.items.length - 1]; } isEmpty() { return this.items.length === 0; } } 2024-09-04
3029 How do you implement a stack in Java? import java.util.Stack; public class Main { public static void main(String[] args) { Stack stack = new Stack<>(); stack.push(1); stack.push(2); System.out.println(stack.pop()); } } 2024-09-04
3030 How do you implement a stack in C++? #include #include int main() { std::stack stack; stack.push(1); stack.push(2); std::cout << stack.top() << std::endl; stack.pop(); return 0; } 2024-09-04
3031 How do you implement a queue in Python? from collections import deque class Queue: def __init__(self): self.items = deque() def enqueue(self, item): self.items.append(item) def dequeue(self): return self.items.popleft() def is_empty(self): return len(self.items) == 0 2024-09-04
3032 How do you implement a queue in JavaScript? class Queue { constructor() { this.items = []; } enqueue(item) { this.items.push(item); } dequeue() { return this.items.shift(); } isEmpty() { return this.items.length === 0; } } 2024-09-04
3033 How do you implement a queue in Java? import java.util.LinkedList; import java.util.Queue; public class Main { public static void main(String[] args) { Queue queue = new LinkedList<>(); queue.add(1); queue.add(2); System.out.println(queue.poll()); } } 2024-09-04
3034 How do you implement a queue in C++? #include #include int main() { std::queue queue; queue.push(1); queue.push(2); std::cout << queue.front() << std::endl; queue.pop(); return 0; } 2024-09-04
3035 How do you implement a linked list in Python? class Node: def __init__(self, data=None): self.data = data self.next = None class LinkedList: def __init__(self): self.head = None def append(self, data): new_node = Node(data) if self.head is None: self.head = new_node return last = self.head while last.next: last = last.next last.next = new_node 2024-09-04
3036 How do you implement a linked list in JavaScript? class Node { constructor(data) { this.data = data; this.next = null; } } class LinkedList { constructor() { this.head = null; } append(data) { const newNode = new Node(data); if (this.head === null) { this.head = newNode; return; } let current = this.head; while (current.next !== null) { current = current.next; } current.next = newNode; } } 2024-09-04
3037 How do you implement a linked list in Java? public class Node { int data; Node next; Node(int data) { this.data = data; this.next = null; } } public class LinkedList { Node head; LinkedList() { this.head = null; } void append(int data) { Node newNode = new Node(data); if (head == null) { head = newNode; return; } Node last = head; while (last.next != null) { last = last.next; } last.next = newNode; } } 2024-09-04
3038 How do you implement a linked list in C++? #include class Node { public: int data; Node* next; Node(int data) : data(data), next(nullptr) {} }; class LinkedList { public: Node* head; LinkedList() : head(nullptr) {} void append(int data) { Node* newNode = new Node(data); if (!head) { head = newNode; return; } Node* last = head; while (last->next) { last = last->next; } last->next = newNode; } }; 2024-09-04
3039 How do you implement a binary tree in Python? class Node: def __init__(self, key): self.left = None self.right = None self.value = key class BinaryTree: def __init__(self): self.root = None def insert(self, key): if self.root is None: self.root = Node(key) else: self._insert(self.root, key) def _insert(self, node, key): if key < node.value: if node.left is None: node.left = Node(key) else: self._insert(node.left, key) else: if node.right is None: node.right = Node(key) else: self._insert(node.right, key) 2024-09-04
3040 How do you implement a binary tree in JavaScript? class Node { constructor(key) { this.left = null; this.right = null; this.value = key; } } class BinaryTree { constructor() { this.root = null; } insert(key) { if (this.root === null) { this.root = new Node(key); } else { this._insert(this.root, key); } } _insert(node, key) { if (key < node.value) { if (node.left === null) { node.left = new Node(key); } else { this._insert(node.left, key); } } else { if (node.right === null) { node.right = new Node(key); } else { this._insert(node.right, key); } } } } 2024-09-04
3041 How do you implement a binary tree in Java? class Node { int key; Node left, right; Node(int item) { key = item; left = right = null; } } class BinaryTree { Node root; BinaryTree() { root = null; } void insert(int key) { root = insertRec(root, key); } Node insertRec(Node root, int key) { if (root == null) { root = new Node(key); return root; } if (key < root.key) { root.left = insertRec(root.left, key); } else if (key > root.key) { root.right = insertRec(root.right, key); } return root; } } 2024-09-04
3042 How do you implement a binary tree in C++? #include class Node { public: int key; Node* left; Node* right; Node(int item) : key(item), left(nullptr), right(nullptr) {} }; class BinaryTree { public: Node* root; BinaryTree() : root(nullptr) {} void insert(int key) { root = insertRec(root, key); } Node* insertRec(Node* root, int key) { if (root == nullptr) { root = new Node(key); return root; } if (key < root->key) { root->left = insertRec(root->left, key); } else if (key > root->key) { root->right = insertRec(root->right, key); } return root; } }; 2024-09-04
3043 How do you traverse a binary tree in Python (in-order)? def in_order_traversal(node): if node: in_order_traversal(node.left) print(node.value) in_order_traversal(node.right) 2024-09-04
3044 How do you traverse a binary tree in JavaScript (in-order)? function inOrderTraversal(node) { if (node) { inOrderTraversal(node.left); console.log(node.value); inOrderTraversal(node.right); } } 2024-09-04
3045 How do you traverse a binary tree in Java (in-order)? void inOrderTraversal(Node root) { if (root != null) { inOrderTraversal(root.left); System.out.println(root.key); inOrderTraversal(root.right); } } 2024-09-04
3046 How do you traverse a binary tree in C++ (in-order)? #include void inOrderTraversal(Node* root) { if (root != nullptr) { inOrderTraversal(root->left); std::cout << root->key << std::endl; inOrderTraversal(root->right); } } 2024-09-04
3047 How do you create a simple web server in Python? from http.server import SimpleHTTPRequestHandler, HTTPServer server = HTTPServer(("localhost", 8000), SimpleHTTPRequestHandler) server.serve_forever() 2024-09-04
3048 How do you create a simple web server in JavaScript (Node.js)? const http = require("http"); const server = http.createServer((req, res) => { res.writeHead(200, { "Content-Type": "text/plain" }); res.end("Hello, World!"); }); server.listen(3000, () => { console.log("Server running at http://localhost:3000/"); }); 2024-09-04
3049 How do you create a simple web server in Java? import com.sun.net.httpserver.HttpServer; import com.sun.net.httpserver.HttpHandler; import com.sun.net.httpserver.HttpExchange; import java.io.IOException; import java.io.OutputStream; public class SimpleHttpServer { public static void main(String[] args) throws IOException { HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0); server.createContext("/", new HttpHandler() { @Override public void handle(HttpExchange exchange) throws IOException { String response = "Hello, World!"; exchange.sendResponseHeaders(200, response.getBytes().length); OutputStream os = exchange.getResponseBody(); os.write(response.getBytes()); os.close(); } }); server.start(); } } 2024-09-04
3050 How do you create a simple web server in C++? #include #include using boost::asio::ip::tcp; int main() { boost::asio::io_context io_context; tcp::acceptor acceptor(io_context, tcp::endpoint(tcp::v4(), 8080)); for (;;) { tcp::socket socket(io_context); acceptor.accept(socket); std::string message = "Hello, World!\n"; boost::asio::write(socket, boost::asio::buffer(message)); } return 0; } 2024-09-04
3051 How do you perform a basic HTTP GET request in Python? import requests response = requests.get("https://api.example.com/data") print(response.text) 2024-09-04
3052 How do you perform a basic HTTP GET request in JavaScript (Node.js)? const https = require("https"); https.get("https://api.example.com/data", (resp) => { let data = ""; resp.on("data", (chunk) => { data += chunk; }); resp.on("end", () => { console.log(data); }); }).on("error", (err) => { console.log("Error: " + err.message); }); 2024-09-04
3053 How do you perform a basic HTTP GET request in Java? import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; public class Main { public static void main(String[] args) throws Exception { URL url = new URL("https://api.example.com/data"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("GET"); BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream())); String inputLine; StringBuilder content = new StringBuilder(); while ((inputLine = in.readLine()) != null) { content.append(inputLine); } in.close(); System.out.println(content.toString()); } } 2024-09-04
3054 How do you perform a basic HTTP GET request in C++? #include #include size_t WriteCallback(void* contents, size_t size, size_t nmemb, void* userp) { ((std::string*)userp)->append((char*)contents, size * nmemb); return size * nmemb; } int main() { CURL* curl; CURLcode res; curl_global_init(CURL_GLOBAL_DEFAULT); curl = curl_easy_init(); if (curl) { std::string readBuffer; curl_easy_setopt(curl, CURLOPT_URL, "https://api.example.com/data"); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback); curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer); res = curl_easy_perform(curl); if (res != CURLE_OK) { fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res)); } std::cout << readBuffer << std::endl; curl_easy_cleanup(curl); } curl_global_cleanup(); return 0; } 2024-09-04
3055 How do you sort an array in Python? arr = [3, 1, 4, 1, 5, 9] arr.sort() print(arr) 2024-09-04
3056 How do you sort an array in JavaScript? let arr = [3, 1, 4, 1, 5, 9]; arr.sort((a, b) => a - b); console.log(arr); 2024-09-04
3057 How do you sort an array in Java? import java.util.Arrays; public class Main { public static void main(String[] args) { int[] arr = {3, 1, 4, 1, 5, 9}; Arrays.sort(arr); System.out.println(Arrays.toString(arr)); } } 2024-09-04
3058 How do you sort an array in C++? #include #include int main() { int arr[] = {3, 1, 4, 1, 5, 9}; std::sort(arr, arr + 6); for (int i = 0; i < 6; ++i) { std::cout << arr[i] << " "; } return 0; } 2024-09-04
3059 How do you reverse a string in Python? s = "hello" reversed_s = s[::-1] print(reversed_s) 2024-09-04
3060 How do you reverse a string in JavaScript? let s = "hello"; let reversed_s = s.split("").reverse().join(""); console.log(reversed_s); 2024-09-04
3061 How do you reverse a string in Java? public class Main { public static void main(String[] args) { String s = "hello"; String reversed_s = new StringBuilder(s).reverse().toString(); System.out.println(reversed_s); } } 2024-09-04
3062 How do you reverse a string in C++? #include #include #include int main() { std::string s = "hello"; std::reverse(s.begin(), s.end()); std::cout << s << std::endl; return 0; } 2024-09-04
3063 How do you handle exceptions in Python? try: # code that may raise an exception except Exception as e: print("Exception:", e) 2024-09-04
3064 How do you handle exceptions in JavaScript? try { // code that may throw an exception } catch (e) { console.log("Exception:", e); } 2024-09-04
3065 How do you handle exceptions in Java? try { // code that may throw an exception } catch (Exception e) { System.out.println("Exception: " + e.getMessage()); } 2024-09-04
3066 How do you handle exceptions in C++? #include int main() { try { // code that may throw an exception } catch (const std::exception& e) { std::cout << "Exception: " << e.what() << std::endl; } return 0; } 2024-09-04
3067 How do you connect to a MySQL database in Python? import mysql.connector conn = mysql.connector.connect( host="localhost", user="yourusername", password="yourpassword", database="yourdatabase" ) cursor = conn.cursor() # Use cursor to interact with the database 2024-09-04
3068 How do you connect to a MongoDB database in Node.js? const { MongoClient } = require("mongodb"); const uri = "mongodb://localhost:27017"; const client = new MongoClient(uri); async function run() { try { await client.connect(); console.log("Connected successfully to server"); } finally { await client.close(); } } run().catch(console.dir); 2024-09-04
3069 How do you connect to a PostgreSQL database in Java? import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; public class Main { public static void main(String[] args) { String url = "jdbc:postgresql://localhost:5432/yourdatabase"; String user = "yourusername"; String password = "yourpassword"; try (Connection conn = DriverManager.getConnection(url, user, password)) { System.out.println("Connected to PostgreSQL database!"); } catch (SQLException e) { e.printStackTrace(); } } } 2024-09-04
3070 How do you connect to a SQLite database in C++? #include #include int main() { sqlite3* db; int rc = sqlite3_open("example.db", &db); if (rc) { std::cerr << "Cannot open database: " << sqlite3_errmsg(db) << std::endl; return rc; } else { std::cout << "Opened database successfully" << std::endl; } sqlite3_close(db); return 0; } 2024-09-04
3071 How do you make a GET request in Python using the requests library? import requests response = requests.get("https://api.example.com/data") print(response.text) 2024-09-04
3072 How do you make a POST request in JavaScript using fetch? fetch("https://api.example.com/data", { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({key: "value"}) }) .then(response => response.json()) .then(data => console.log(data)) .catch(error => console.error("Error:", error)); 2024-09-04
3073 How do you parse JSON in Python? import json json_string = '{"key": "value"}' data = json.loads(json_string) print(data["key"]) 2024-09-04
3074 How do you parse JSON in JavaScript? let jsonString = '{"key": "value"}'; let data = JSON.parse(jsonString); console.log(data.key); 2024-09-04
3075 How do you create a simple class in Python? class MyClass: def __init__(self, value): self.value = value obj = MyClass(10) print(obj.value) 2024-09-04
3076 How do you create a simple class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } public int getValue() { return value; } } public class Main { public static void main(String[] args) { MyClass obj = new MyClass(10); System.out.println(obj.getValue()); } } 2024-09-04
3077 How do you create a simple class in C++? #include class MyClass { private: int value; public: MyClass(int v) : value(v) {} int getValue() { return value; } }; int main() { MyClass obj(10); std::cout << obj.getValue() << std::endl; return 0; } 2024-09-04
3078 How do you create a simple function in Python? def my_function(param): return param * 2 result = my_function(5) print(result) 2024-09-04
3079 How do you create a simple function in JavaScript? function myFunction(param) { return param * 2; } let result = myFunction(5); console.log(result); 2024-09-04
3080 How do you create a simple function in Java? public class Main { public static int myFunction(int param) { return param * 2; } public static void main(String[] args) { int result = myFunction(5); System.out.println(result); } } 2024-09-04
3081 How do you create a simple function in C++? #include int myFunction(int param) { return param * 2; } int main() { int result = myFunction(5); std::cout << result << std::endl; return 0; } 2024-09-04
3082 How do you handle file input/output in Python? with open("file.txt", "w") as file: file.write("Hello, world!") with open("file.txt", "r") as file: print(file.read()) 2024-09-04
3083 How do you handle file input/output in JavaScript (Node.js)? const fs = require("fs"); fs.writeFile("file.txt", "Hello, world!", (err) => { if (err) throw err; fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); }); 2024-09-04
3084 How do you handle file input/output in Java? import java.nio.file.Files; import java.nio.file.Paths; import java.io.IOException; public class Main { public static void main(String[] args) { String content = "Hello, world!"; try { Files.write(Paths.get("file.txt"), content.getBytes()); String readContent = new String(Files.readAllBytes(Paths.get("file.txt"))); System.out.println(readContent); } catch (IOException e) { e.printStackTrace(); } } } 2024-09-04
3085 How do you handle file input/output in C++? #include #include #include int main() { std::ofstream outfile("file.txt"); outfile << "Hello, world!"; outfile.close(); std::ifstream infile("file.txt"); std::string line; while (getline(infile, line)) { std::cout << line << std::endl; } infile.close(); return 0; } 2024-09-04
3086 How do you create a class in Python? class MyClass: def __init__(self, value): self.value = value def display(self): print(self.value) 2024-09-04
3087 How do you create a class in JavaScript? class MyClass { constructor(value) { this.value = value; } display() { console.log(this.value); } } 2024-09-04
3088 How do you create a class in Java? public class MyClass { private int value; public MyClass(int value) { this.value = value; } public void display() { System.out.println(value); } } 2024-09-04
3089 How do you create a class in C++? #include class MyClass { private: int value; public: MyClass(int v) : value(v) {} void display() { std::cout << value << std::endl; } }; int main() { MyClass obj(10); obj.display(); return 0; } 2024-09-04
3090 How do you inherit a class in Python? class Base: def base_method(self): print("Base method") class Derived(Base): def derived_method(self): print("Derived method") 2024-09-04
3091 How do you inherit a class in JavaScript? class Base { baseMethod() { console.log("Base method"); } } class Derived extends Base { derivedMethod() { console.log("Derived method"); } } 2024-09-04
3092 How do you inherit a class in Java? public class Base { public void baseMethod() { System.out.println("Base method"); } } public class Derived extends Base { public void derivedMethod() { System.out.println("Derived method"); } } 2024-09-04
3093 How do you inherit a class in C++? #include class Base { public: void baseMethod() { std::cout << "Base method" << std::endl; } }; class Derived : public Base { public: void derivedMethod() { std::cout << "Derived method" << std::endl; } }; int main() { Derived obj; obj.baseMethod(); obj.derivedMethod(); return 0; } 2024-09-04
3094 How do you implement polymorphism in Python? class Base: def method(self): print("Base method") class Derived(Base): def method(self): print("Derived method") obj = Derived() obj.method() 2024-09-04
3095 How do you implement polymorphism in JavaScript? class Base { method() { console.log("Base method"); } } class Derived extends Base { method() { console.log("Derived method"); } } const obj = new Derived(); obj.method(); 2024-09-04
3096 How do you implement polymorphism in Java? public class Base { public void method() { System.out.println("Base method"); } } public class Derived extends Base { @Override public void method() { System.out.println("Derived method"); } } public class Main { public static void main(String[] args) { Base obj = new Derived(); obj.method(); } } 2024-09-04
3097 How do you implement polymorphism in C++? #include class Base { public: virtual void method() { std::cout << "Base method" << std::endl; } }; class Derived : public Base { public: void method() override { std::cout << "Derived method" << std::endl; } }; int main() { Base* obj = new Derived(); obj->method(); delete obj; return 0; } 2024-09-04
3098 How do you handle exceptions in Python? try: # Code that may raise an exception except Exception as e: print(e) 2024-09-04
3099 How do you handle exceptions in JavaScript? try { // Code that may throw an exception } catch (e) { console.error(e); } 2024-09-04
3100 How do you handle exceptions in Java? try { // Code that may throw an exception } catch (Exception e) { e.printStackTrace(); } 2024-09-04
3101 How do you handle exceptions in C++? #include int main() { try { throw std::runtime_error("An error occurred"); } catch (const std::exception& e) { std::cerr << e.what() << std::endl; } return 0; } 2024-09-04
3102 How do you sort a list in Python? my_list = [3, 1, 4, 1, 5] my_list.sort() print(my_list) 2024-09-04
3103 How do you sort an array in JavaScript? let myArray = [3, 1, 4, 1, 5]; myArray.sort((a, b) => a - b); console.log(myArray); 2024-09-04
3104 How do you sort an array in Java? import java.util.Arrays; public class Main { public static void main(String[] args) { int[] array = {3, 1, 4, 1, 5}; Arrays.sort(array); System.out.println(Arrays.toString(array)); } } 2024-09-04
3105 How do you sort a vector in C++? #include #include #include int main() { std::vector vec = {3, 1, 4, 1, 5}; std::sort(vec.begin(), vec.end()); for (int n : vec) { std::cout << n << " "; } return 0; } 2024-09-04
3106 How do you create a basic HTTP server in Python? from http.server import SimpleHTTPRequestHandler, HTTPServer server = HTTPServer(("localhost", 8000), SimpleHTTPRequestHandler) server.serve_forever() 2024-09-04
3107 How do you create a basic HTTP server in Node.js? const http = require("http"); const server = http.createServer((req, res) => { res.statusCode = 200; res.setHeader("Content-Type", "text/plain"); res.end("Hello, world!\n"); }); server.listen(3000, "127.0.0.1", () => { console.log("Server running at http://127.0.0.1:3000/"); }); 2024-09-04
3108 How do you create a basic HTTP server in Java? import java.io.IOException; import java.io.OutputStream; import com.sun.net.httpserver.HttpServer; import com.sun.net.httpserver.HttpHandler; import com.sun.net.httpserver.HttpExchange; public class Main { public static void main(String[] args) throws IOException { HttpServer server = HttpServer.create(new InetSocketAddress(8000), 0); server.createContext("/", new HttpHandler() { @Override public void handle(HttpExchange exchange) throws IOException { String response = "Hello, world!"; exchange.sendResponseHeaders(200, response.getBytes().length); OutputStream os = exchange.getResponseBody(); os.write(response.getBytes()); os.close(); } }); server.start(); } } 2024-09-04
3109 How do you create a basic HTTP server in C++? #include #include using namespace boost::asio; int main() { io_context io; ip::tcp::acceptor acceptor(io, ip::tcp::endpoint(ip::tcp::v4(), 8080)); ip::tcp::socket socket(io); acceptor.accept(socket); std::string message = "HTTP/1.1 200 OK\r\nContent-Length: 13\r\n\r\nHello, world!"; boost::asio::write(socket, boost::asio::buffer(message)); return 0; } 2024-09-04
3110 How do you perform unit testing in Python? import unittest class TestStringMethods(unittest.TestCase): def test_upper(self): self.assertEqual("foo".upper(), "FOO") if __name__ == "__main__": unittest.main() 2024-09-04
3111 How do you perform unit testing in JavaScript? const assert = require("assert"); function test() { assert.strictEqual("foo".toUpperCase(), "FOO"); } test(); 2024-09-04
3112 How do you perform unit testing in Java? import org.junit.jupiter.api.Test; import static org.junit.jupiter.api.Assertions.assertEquals; public class MyTests { @Test void testUpper() { assertEquals("FOO", "foo".toUpperCase()); } } 2024-09-04
3113 How do you perform unit testing in C++? #include TEST(StringTest, UpperCase) { ASSERT_EQ("FOO", boost::to_upper_copy("foo")); } int main(int argc, char **argv) { ::testing::InitGoogleTest(&argc, argv); return RUN_ALL_TESTS(); } 2024-09-04
3114 How do you connect to a database in Python? import sqlite3 conn = sqlite3.connect("example.db") cursor = conn.cursor() cursor.execute("CREATE TABLE IF NOT EXISTS example (id INTEGER PRIMARY KEY, name TEXT)") conn.commit() conn.close() 2024-09-04
3115 How do you connect to a database in JavaScript (Node.js)? const { Client } = require("pg"); const client = new Client({ connectionString: "postgres://user:password@localhost:5432/mydatabase" }); client.connect() .then(() => console.log("Connected")) .catch(err => console.error("Connection error", err.stack)); 2024-09-04
3116 How do you connect to a database in Java? import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; public class Main { public static void main(String[] args) { try { Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydatabase", "user", "password"); System.out.println("Connected"); } catch (SQLException e) { e.printStackTrace(); } } } 2024-09-04
3117 How do you connect to a database in C++? #include #include #include int main() { sql::mysql::MySQL_Driver *driver; sql::Connection *con; driver = sql::mysql::get_mysql_driver_instance(); con = driver->connect("tcp://127.0.0.1:3306", "user", "password"); std::cout << "Connected" << std::endl; delete con; return 0; } 2024-09-04
3118 How do you perform a GET request in Python? import requests response = requests.get("https://api.example.com/data") print(response.json()) 2024-09-04
3119 How do you perform a GET request in JavaScript? fetch("https://api.example.com/data") .then(response => response.json()) .then(data => console.log(data)) .catch(error => console.error("Error:", error)); 2024-09-04
3120 How do you perform a GET request in Java? import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL; public class Main { public static void main(String[] args) throws Exception { URL url = new URL("https://api.example.com/data"); HttpURLConnection con = (HttpURLConnection) url.openConnection(); con.setRequestMethod("GET"); BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream())); String inputLine; StringBuffer content = new StringBuffer(); while ((inputLine = in.readLine()) != null) { content.append(inputLine); } in.close(); System.out.println(content.toString()); } } 2024-09-04
3121 How do you perform a GET request in C++? #include #include size_t WriteCallback(void* contents, size_t size, size_t nmemb, void* userp) { ((std::string*)userp)->append((char*)contents, size * nmemb); return size * nmemb; } int main() { CURL *curl; CURLcode res; std::string readBuffer; curl = curl_easy_init(); if (curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://api.example.com/data"); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback); curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer); res = curl_easy_perform(curl); if (res != CURLE_OK) { fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res)); } std::cout << readBuffer << std::endl; curl_easy_cleanup(curl); } return 0; } 2024-09-04
3122 How do you loop through a list in Python? my_list = [1, 2, 3, 4] for item in my_list: print(item) 2024-09-04
3123 How do you loop through an array in JavaScript? let myArray = [1, 2, 3, 4]; myArray.forEach(item => console.log(item)); 2024-09-04
3124 How do you loop through an array in Java? int[] array = {1, 2, 3, 4}; for (int item : array) { System.out.println(item); } 2024-09-04
3125 How do you loop through a vector in C++? #include #include int main() { std::vector vec = {1, 2, 3, 4}; for (int item : vec) { std::cout << item << std::endl; } return 0; } 2024-09-04
3126 How do you create a function in Python? def my_function(param): return param * 2 2024-09-04
3127 How do you create a function in JavaScript? function myFunction(param) { return param * 2; } 2024-09-04
3128 How do you create a method in Java? public class MyClass { public int myMethod(int param) { return param * 2; } } 2024-09-04
3129 How do you create a method in C++? #include class MyClass { public: int myMethod(int param) { return param * 2; } }; int main() { MyClass obj; std::cout << obj.myMethod(5) << std::endl; return 0; } 2024-09-04
3130 How do you define a variable in Python? my_variable = 10 2024-09-04
3131 How do you define a variable in JavaScript? let myVariable = 10; 2024-09-04
3132 How do you define a variable in Java? int myVariable = 10; 2024-09-04
3133 How do you define a variable in C++? #include int main() { int myVariable = 10; std::cout << myVariable << std::endl; return 0; } 2024-09-04
3134 How do you concatenate strings in Python? str1 = "Hello" str2 = "World" result = str1 + " " + str2 print(result) 2024-09-04
3135 How do you concatenate strings in JavaScript? let str1 = "Hello"; let str2 = "World"; let result = str1 + " " + str2; console.log(result); 2024-09-04
3136 How do you concatenate strings in Java? String str1 = "Hello"; String str2 = "World"; String result = str1 + " " + str2; System.out.println(result); 2024-09-04
3137 How do you concatenate strings in C++? #include #include int main() { std::string str1 = "Hello"; std::string str2 = "World"; std::string result = str1 + " " + str2; std::cout << result << std::endl; return 0; } 2024-09-04
3138 How do you read a file in Python? with open("file.txt", "r") as file: content = file.read() print(content) 2024-09-04
3139 How do you read a file in JavaScript (Node.js)? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-04
3140 How do you read a file in Java? import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; public class Main { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new FileReader("file.txt")); String line; while ((line = reader.readLine()) != null) { System.out.println(line); } reader.close(); } } 2024-09-04
3141 How do you read a file in C++? #include #include #include int main() { std::ifstream file("file.txt"); std::string line; while (std::getline(file, line)) { std::cout << line << std::endl; } file.close(); return 0; } 2024-09-04
3142 How do you handle exceptions in Python? try: # code that may raise an exception except Exception as e: print(f"An error occurred: {e}") 2024-09-04
3143 How do you handle exceptions in JavaScript? try { // code that may throw an exception } catch (e) { console.error("An error occurred:", e); } 2024-09-04
3144 How do you handle exceptions in Java? try { // code that may throw an exception } catch (Exception e) { System.out.println("An error occurred: " + e.getMessage()); } 2024-09-04
3145 How do you handle exceptions in C++? #include #include int main() { try { // code that may throw an exception } catch (const std::exception& e) { std::cerr << "An error occurred: " << e.what() << std::endl; } return 0; } 2024-09-04
3146 How do you reverse a string in Python? reversed_string = my_string[::-1] 2024-09-04
3147 How do you reverse a string in JavaScript? const reversedString = myString.split("").reverse().join(""); 2024-09-04
3148 How do you reverse a string in Java? String reversed = new StringBuilder(myString).reverse().toString(); 2024-09-04
3149 How do you reverse a string in C++? #include #include int main() { std::string myString = "Hello"; std::reverse(myString.begin(), myString.end()); return 0; } 2024-09-04
3150 How do you convert a string to lowercase in Python? lower_string = my_string.lower() 2024-09-04
3151 How do you convert a string to lowercase in JavaScript? const lowerString = myString.toLowerCase(); 2024-09-04
3152 How do you convert a string to lowercase in Java? String lowerString = myString.toLowerCase(); 2024-09-04
3153 How do you convert a string to lowercase in C++? #include #include #include int main() { std::string myString = "HELLO"; std::transform(myString.begin(), myString.end(), myString.begin(), ::tolower); return 0; } 2024-09-04
3154 How do you check if a string is a palindrome in Python? def is_palindrome(s): return s == s[::-1] 2024-09-04
3155 How do you check if a string is a palindrome in JavaScript? function isPalindrome(str) { return str === str.split("").reverse().join(""); } 2024-09-04
3156 How do you check if a string is a palindrome in Java? public boolean isPalindrome(String s) { return s.equals(new StringBuilder(s).reverse().toString()); } 2024-09-04
3157 How do you check if a string is a palindrome in C++? #include #include bool isPalindrome(std::string s) { std::string reversed = s; std::reverse(reversed.begin(), reversed.end()); return s == reversed; } 2024-09-04
3158 How do you find the length of a string in Python? length = len(my_string) 2024-09-04
3159 How do you find the length of a string in JavaScript? const length = myString.length; 2024-09-04
3160 How do you find the length of a string in Java? int length = myString.length(); 2024-09-04
3161 How do you find the length of a string in C++? #include int main() { std::string myString = "Hello"; int length = myString.length(); return 0; } 2024-09-04
3162 How do you concatenate strings in Python? concatenated_string = string1 + string2 2024-09-04
3163 How do you concatenate strings in JavaScript? const concatenatedString = string1 + string2; 2024-09-04
3164 How do you concatenate strings in Java? String concatenatedString = string1 + string2; 2024-09-04
3165 How do you concatenate strings in C++? #include int main() { std::string string1 = "Hello"; std::string string2 = "World"; std::string concatenatedString = string1 + " " + string2; return 0; } 2024-09-04
3166 How do you convert a string to an integer in Python? integer_value = int(my_string) 2024-09-04
3167 How do you convert a string to an integer in JavaScript? const integerValue = parseInt(myString); 2024-09-04
3168 How do you convert a string to an integer in Java? int integerValue = Integer.parseInt(myString); 2024-09-04
3169 How do you convert a string to an integer in C++? #include #include int main() { std::string myString = "123"; int integerValue = std::stoi(myString); return 0; } 2024-09-04
3170 How do you convert an integer to a string in Python? string_value = str(my_integer) 2024-09-04
3171 How do you convert an integer to a string in JavaScript? const stringValue = myInteger.toString(); 2024-09-04
3172 How do you convert an integer to a string in Java? String stringValue = Integer.toString(myInteger); 2024-09-04
3173 How do you convert an integer to a string in C++? #include int main() { int myInteger = 123; std::string stringValue = std::to_string(myInteger); return 0; } 2024-09-04
3174 How do you create a list in Python? my_list = [1, 2, 3, 4, 5] 2024-09-04
3175 How do you create an array in JavaScript? const myArray = [1, 2, 3, 4, 5]; 2024-09-04
3176 How do you create an array in Java? int[] myArray = {1, 2, 3, 4, 5}; 2024-09-04
3177 How do you create an array in C++? #include int main() { int myArray[5] = {1, 2, 3, 4, 5}; return 0; } 2024-09-04
3178 How do you find the length of a list in Python? list_length = len(my_list) 2024-09-04
3179 How do you find the length of an array in JavaScript? const arrayLength = myArray.length; 2024-09-04
3180 How do you find the length of an array in Java? int arrayLength = myArray.length; 2024-09-04
3181 How do you find the length of an array in C++? #include int main() { int myArray[] = {1, 2, 3, 4, 5}; int arrayLength = sizeof(myArray) / sizeof(myArray[0]); return 0; } 2024-09-04
3182 How do you sort a list in Python? sorted_list = sorted(my_list) 2024-09-04
3183 How do you sort an array in JavaScript? const sortedArray = myArray.sort((a, b) => a - b); 2024-09-04
3184 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-04
3185 How do you sort an array in C++? #include #include int main() { std::array myArray = {5, 2, 1, 4, 3}; std::sort(myArray.begin(), myArray.end()); return 0; } 2024-09-04
3186 How do you remove duplicates from a list in Python? unique_list = list(set(my_list)) 2024-09-04
3187 How do you remove duplicates from an array in JavaScript? const uniqueArray = [...new Set(myArray)]; 2024-09-04
3188 How do you remove duplicates from an array in Java? int[] uniqueArray = Arrays.stream(myArray).distinct().toArray(); 2024-09-04
3189 How do you remove duplicates from an array in C++? #include #include int main() { std::vector myArray = {1, 2, 2, 3, 4}; std::sort(myArray.begin(), myArray.end()); auto last = std::unique(myArray.begin(), myArray.end()); myArray.erase(last, myArray.end()); return 0; } 2024-09-04
3190 How do you check if a list contains an element in Python? if element in my_list: print("Element exists") 2024-09-04
3191 How do you check if an array contains an element in JavaScript? if (myArray.includes(element)) { console.log("Element exists"); } 2024-09-04
3192 How do you check if an array contains an element in Java? boolean contains = Arrays.asList(myArray).contains(element); 2024-09-04
3193 How do you check if an array contains an element in C++? #include #include int main() { std::vector myArray = {1, 2, 3, 4, 5}; if (std::find(myArray.begin(), myArray.end(), element) != myArray.end()) { std::cout << "Element exists"; } return 0; } 2024-09-04
3194 How do you reverse a string in Python? reversed_string = my_string[::-1] 2024-09-04
3195 How do you reverse a string in JavaScript? const reversedString = myString.split("").reverse().join(""); 2024-09-04
3196 How do you reverse a string in Java? String reversedString = new StringBuilder(myString).reverse().toString(); 2024-09-04
3197 How do you reverse a string in C++? #include #include int main() { std::string myString = "hello"; std::reverse(myString.begin(), myString.end()); return 0; } 2024-09-04
3198 How do you check if a string is a palindrome in Python? if my_string == my_string[::-1]: print("Palindrome") 2024-09-04
3199 How do you check if a string is a palindrome in JavaScript? if (myString === myString.split("").reverse().join("")) { console.log("Palindrome"); } 2024-09-04
3200 How do you check if a string is a palindrome in Java? boolean isPalindrome = myString.equals(new StringBuilder(myString).reverse().toString()); 2024-09-04
3201 How do you check if a string is a palindrome in C++? #include #include int main() { std::string myString = "madam"; std::string reversedString = myString; std::reverse(reversedString.begin(), reversedString.end()); if (myString == reversedString) { std::cout << "Palindrome"; } return 0; } 2024-09-04
3202 How do you swap two variables in Python? a, b = b, a 2024-09-04
3203 How do you swap two variables in JavaScript? [a, b] = [b, a]; 2024-09-04
3204 How do you swap two variables in Java? int temp = a; a = b; b = temp; 2024-09-04
3205 How do you swap two variables in C++? int temp = a; a = b; b = temp; 2024-09-04
3206 How do you check if a number is even in Python? if my_number % 2 == 0: print("Even") 2024-09-04
3207 How do you check if a number is even in JavaScript? if (myNumber % 2 === 0) { console.log("Even"); } 2024-09-04
3208 How do you check if a number is even in Java? if (myNumber % 2 == 0) { System.out.println("Even"); } 2024-09-04
3209 How do you check if a number is even in C++? if (myNumber % 2 == 0) { std::cout << "Even"; } 2024-09-04
3210 How do you generate a random number in Python? import random random_number = random.randint(1, 100) 2024-09-04
3211 How do you generate a random number in JavaScript? const randomNumber = Math.floor(Math.random() * 100) + 1; 2024-09-04
3212 How do you generate a random number in Java? import java.util.Random; Random random = new Random(); int randomNumber = random.nextInt(100) + 1; 2024-09-04
3213 How do you generate a random number in C++? #include #include int main() { std::srand(std::time(0)); int randomNumber = std::rand() % 100 + 1; return 0; } 2024-09-04
3214 How do you read input from the user in Python? user_input = input("Enter something: ") 2024-09-04
3215 How do you read input from the user in JavaScript? const userInput = prompt("Enter something:"); 2024-09-04
3216 How do you read input from the user in Java? Scanner scanner = new Scanner(System.in); String userInput = scanner.nextLine(); 2024-09-04
3217 How do you read input from the user in C++? #include int main() { std::string userInput; std::cin >> userInput; return 0; } 2024-09-04
3218 How do you declare a variable in Python? x = 5 2024-09-04
3219 How do you declare a variable in JavaScript? let x = 5; 2024-09-04
3220 How do you declare a variable in Java? int x = 5; 2024-09-04
3221 How do you declare a variable in C++? int x = 5; 2024-09-04
3222 How do you write an if statement in Python? if x > 5: print("x is greater than 5") 2024-09-04
3223 How do you write an if statement in JavaScript? if (x > 5) { console.log("x is greater than 5"); } 2024-09-04
3224 How do you write an if statement in Java? if (x > 5) { System.out.println("x is greater than 5"); } 2024-09-04
3225 How do you write an if statement in C++? if (x > 5) { std::cout << "x is greater than 5"; } 2024-09-04
3226 How do you implement a switch case in Python? def switch_case(argument): match argument: case 1: return "one" case 2: return "two" 2024-09-04
3227 How do you implement a switch case in JavaScript? switch (x) { case 1: console.log("one"); break; case 2: console.log("two"); break; } 2024-09-04
3228 How do you implement a switch case in Java? switch (x) { case 1: System.out.println("one"); break; case 2: System.out.println("two"); break; } 2024-09-04
3229 How do you implement a switch case in C++? switch (x) { case 1: std::cout << "one"; break; case 2: std::cout << "two"; break; } 2024-09-04
3230 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
3231 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
3232 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-04
3233 How do you create an array in C++? int myArray[] = {1, 2, 3}; 2024-09-04
3234 How do you access elements in a Python list? element = my_list[0] 2024-09-04
3235 How do you access elements in a JavaScript array? let element = myArray[0]; 2024-09-04
3236 How do you access elements in a Java array? int element = myArray[0]; 2024-09-04
3237 How do you access elements in a C++ array? int element = myArray[0]; 2024-09-04
3238 How do you create a dictionary in Python? my_dict = {"key1": "value1", "key2": "value2"} 2024-09-04
3239 How do you create an object in JavaScript? let myObject = {key1: "value1", key2: "value2"}; 2024-09-04
3240 How do you create an object in Java? class MyClass { String key1 = "value1"; String key2 = "value2"; } 2024-09-04
3241 How do you create a map in C++? #include std::map myMap = {{"key1", "value1"}, {"key2", "value2"}}; 2024-09-04
3242 How do you append to a list in Python? my_list.append(4) 2024-09-04
3243 How do you add an element to an array in JavaScript? myArray.push(4); 2024-09-04
3244 How do you declare a variable in Python? x = 5 2024-09-04
3245 How do you declare a variable in JavaScript? let x = 5; 2024-09-04
3246 How do you declare a variable in Java? int x = 5; 2024-09-04
3247 How do you declare a variable in C++? int x = 5; 2024-09-04
3248 How do you write an if statement in Python? if x > 5: print("x is greater than 5") 2024-09-04
3249 How do you write an if statement in JavaScript? if (x > 5) { console.log("x is greater than 5"); } 2024-09-04
3250 How do you write an if statement in Java? if (x > 5) { System.out.println("x is greater than 5"); } 2024-09-04
3251 How do you write an if statement in C++? if (x > 5) { std::cout << "x is greater than 5"; } 2024-09-04
3252 How do you implement a switch case in Python? def switch_case(argument): match argument: case 1: return "one" case 2: return "two" 2024-09-04
3253 How do you implement a switch case in JavaScript? switch (x) { case 1: console.log("one"); break; case 2: console.log("two"); break; } 2024-09-04
3254 How do you implement a switch case in Java? switch (x) { case 1: System.out.println("one"); break; case 2: System.out.println("two"); break; } 2024-09-04
3255 How do you implement a switch case in C++? switch (x) { case 1: std::cout << "one"; break; case 2: std::cout << "two"; break; } 2024-09-04
3256 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-04
3257 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-04
3258 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-04
3259 How do you create an array in C++? int myArray[] = {1, 2, 3}; 2024-09-04
3260 How do you access elements in a Python list? element = my_list[0] 2024-09-04
3261 How do you access elements in a JavaScript array? let element = myArray[0]; 2024-09-04
3262 How do you access elements in a Java array? int element = myArray[0]; 2024-09-04
3263 How do you access elements in a C++ array? int element = myArray[0]; 2024-09-04
3264 How do you create a dictionary in Python? my_dict = {"key1": "value1", "key2": "value2"} 2024-09-04
3265 How do you create an object in JavaScript? let myObject = {key1: "value1", key2: "value2"}; 2024-09-04
3266 How do you create an object in Java? class MyClass { String key1 = "value1"; String key2 = "value2"; } 2024-09-04
3267 How do you create a map in C++? #include std::map myMap = {{"key1", "value1"}, {"key2", "value2"}}; 2024-09-04
3268 How do you append to a list in Python? my_list.append(4) 2024-09-04
3269 How do you append an element to an array in JavaScript? myArray.push(5); 2024-09-05
3270 How do you append an element to an array in Python? my_list.append(5) 2024-09-05
3271 How do you declare a string in Python? my_string = "Hello, World!" 2024-09-05
3272 How do you declare a string in Java? String myString = "Hello, World!"; 2024-09-05
3273 How do you declare a string in JavaScript? let myString = "Hello, World!"; 2024-09-05
3274 How do you declare a string in C++? std::string myString = "Hello, World!"; 2024-09-05
3275 How do you declare a list in Python? my_list = [1, 2, 3] 2024-09-05
3276 How do you declare an array in Java? int[] myArray = {1, 2, 3}; 2024-09-05
3277 How do you declare an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-05
3278 How do you loop through a list in Python? for element in my_list: print(element) 2024-09-05
3279 How do you loop through an array in Java? for(int i = 0; i < myArray.length; i++) { System.out.println(myArray[i]); } 2024-09-05
3280 How do you loop through an array in JavaScript? for(let i = 0; i < myArray.length; i++) { console.log(myArray[i]); } 2024-09-05
3281 How do you loop through an array in C++? for(int i = 0; i < sizeof(myArray)/sizeof(myArray[0]); i++) { std::cout << myArray[i]; } 2024-09-05
3282 How do you check if a key exists in a Python dictionary? if "key" in my_dict: print("Key exists") 2024-09-05
3283 How do you check if a property exists in a JavaScript object? if ("key" in myObject) { console.log("Key exists"); } 2024-09-05
3284 How do you check if an array contains an element in Python? if 3 in my_list: print("Element exists") 2024-09-05
3285 How do you check if an array contains an element in Java? if (Arrays.asList(myArray).contains(3)) { System.out.println("Element exists"); } 2024-09-05
3286 How do you check if an array contains an element in JavaScript? if (myArray.includes(3)) { console.log("Element exists"); } 2024-09-05
3287 How do you write a function in Python? def my_function(): print("Hello, World!") 2024-09-05
3288 How do you write a function in JavaScript? function myFunction() { console.log("Hello, World!"); } 2024-09-05
3289 How do you write a method in Java? public void myMethod() { System.out.println("Hello, World!"); } 2024-09-05
3290 How do you write a function in C++? void myFunction() { std::cout << "Hello, World!"; } 2024-09-05
3291 How do you convert a string to an integer in Python? my_int = int("123") 2024-09-05
3292 How do you convert a string to an integer in JavaScript? let myInt = parseInt("123"); 2024-09-05
3293 How do you convert a string to an integer in Java? int myInt = Integer.parseInt("123"); 2024-09-05
3294 How do you convert a string to an integer in C++? int myInt = std::stoi("123"); 2024-09-05
3295 How do you check if a number is even in Python? if x % 2 == 0: print("Even") 2024-09-05
3296 How do you check if a number is even in JavaScript? if (x % 2 === 0) { console.log("Even"); } 2024-09-05
3297 How do you check if a number is even in Java? if (x % 2 == 0) { System.out.println("Even"); } 2024-09-05
3298 How do you check if a number is even in C++? if (x % 2 == 0) { std::cout << "Even"; } 2024-09-05
3299 How do you reverse a string in Python? my_string[::-1] 2024-09-05
3300 How do you reverse a string in JavaScript? myString.split("").reverse().join(""); 2024-09-05
3301 How do you reverse a string in Java? new StringBuilder(myString).reverse().toString(); 2024-09-05
3302 How do you reverse a string in C++? std::reverse(myString.begin(), myString.end()); 2024-09-05
3303 How do you create a class in Python? class MyClass: def __init__(self): pass 2024-09-05
3304 How do you create a class in Java? public class MyClass { public MyClass() { } } 2024-09-05
3305 How do you create a class in C++? class MyClass { public: MyClass() {} }; 2024-09-05
3306 How do you create an object from a class in Python? my_object = MyClass() 2024-09-05
3307 How do you create an object from a class in Java? MyClass myObject = new MyClass(); 2024-09-05
3308 How do you create an object from a class in C++? MyClass myObject; 2024-09-05
3309 How do you calculate the length of a list in Python? len(my_list) 2024-09-05
3310 How do you calculate the length of an array in Java? myArray.length 2024-09-05
3311 How do you calculate the length of an array in C++? sizeof(myArray)/sizeof(myArray[0]) 2024-09-05
3312 How do you check if a string contains a substring in Python? if "substring" in my_string: print("Found") 2024-09-05
3313 How do you check if a string contains a substring in JavaScript? if (myString.includes("substring")) { console.log("Found"); } 2024-09-05
3314 How do you check if a string contains a substring in Java? if (myString.contains("substring")) { System.out.println("Found"); } 2024-09-05
3315 How do you check if a string contains a substring in C++? if (myString.find("substring") != std::string::npos) { std::cout << "Found"; } 2024-09-05
3316 How do you convert a list to a set in Python? my_set = set(my_list) 2024-09-05
3317 How do you convert a set to a list in Python? my_list = list(my_set) 2024-09-05
3318 How do you read input from a user in Python? user_input = input("Enter something: ") 2024-09-05
3319 How do you read input from a user in Java? Scanner sc = new Scanner(System.in); String input = sc.nextLine(); 2024-09-05
3320 How do you read input from a user in C++? std::cin >> user_input; 2024-09-05
3321 How do you write output to the console in Python? print("Hello, World!") 2024-09-05
3322 How do you write output to the console in Java? System.out.println("Hello, World!"); 2024-09-05
3323 How do you write output to the console in C++? std::cout << "Hello, World!"; 2024-09-05
3324 How do you remove an element from a list in Python? my_list.remove(2) 2024-09-05
3325 How do you remove an element from an array in JavaScript? myArray.splice(index, 1); 2024-09-05
3326 How do you remove an element from an array in Java? myArray = ArrayUtils.removeElement(myArray, 2); 2024-09-05
3327 How do you remove an element from a vector in C++? myVector.erase(myVector.begin() + index); 2024-09-05
3328 How do you find the maximum value in a list in Python? max_value = max(my_list) 2024-09-05
3329 How do you find the maximum value in an array in Java? int maxValue = Arrays.stream(myArray).max().getAsInt(); 2024-09-05
3330 How do you find the maximum value in an array in C++? int maxValue = *std::max_element(myArray, myArray + size); 2024-09-05
3331 How do you sort a list in Python? my_list.sort() 2024-09-05
3332 How do you sort an array in JavaScript? myArray.sort() 2024-09-05
3333 How do you sort an array in Java? Arrays.sort(myArray) 2024-09-05
3334 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()) 2024-09-05
3335 How do you find the minimum value in a list in Python? min_value = min(my_list) 2024-09-05
3336 How do you find the minimum value in an array in Java? int minValue = Arrays.stream(myArray).min().getAsInt(); 2024-09-05
3337 How do you find the minimum value in an array in C++? int minValue = *std::min_element(myArray, myArray + size); 2024-09-05
3338 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-05
3339 How do you create an array in JavaScript? myArray = [1, 2, 3] 2024-09-05
3340 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-05
3341 How do you create a vector in C++? std::vector myVector = {1, 2, 3}; 2024-09-05
3342 How do you append an element to a list in Python? my_list.append(4) 2024-09-05
3343 How do you append an element to an array in JavaScript? myArray.push(4) 2024-09-05
3344 How do you append an element to a vector in C++? myVector.push_back(4) 2024-09-05
3345 How do you insert an element at a specific position in a list in Python? my_list.insert(1, 4) 2024-09-05
3346 How do you insert an element at a specific position in an array in JavaScript? myArray.splice(1, 0, 4) 2024-09-05
3347 How do you insert an element at a specific position in a vector in C++? myVector.insert(myVector.begin() + 1, 4) 2024-09-05
3348 How do you remove an element at a specific position in a list in Python? my_list.pop(1) 2024-09-05
3349 How do you remove an element at a specific position in an array in JavaScript? myArray.splice(1, 1) 2024-09-05
3350 How do you remove an element at a specific position in a vector in C++? myVector.erase(myVector.begin() + 1) 2024-09-05
3351 How do you loop through a list in Python? for item in my_list: print(item) 2024-09-05
3352 How do you loop through an array in JavaScript? myArray.forEach(function(item) { console.log(item); }); 2024-09-05
3353 How do you loop through an array in Java? for (int i = 0; i < myArray.length; i++) { System.out.println(myArray[i]); } 2024-09-05
3354 How do you loop through a vector in C++? for (int i = 0; i < myVector.size(); i++) { std::cout << myVector[i] << std::endl; } 2024-09-05
3355 How do you convert a list to a string in Python? my_string = ",".join(map(str, my_list)) 2024-09-05
3356 How do you convert an array to a string in JavaScript? myString = myArray.join(",") 2024-09-05
3357 How do you convert an array to a string in Java? String myString = Arrays.toString(myArray); 2024-09-05
3358 How do you convert a vector to a string in C++? std::string myString = std::accumulate(myVector.begin(), myVector.end(), std::string(), [](std::string a, int b) { return a + "," + std::to_string(b); }); 2024-09-05
3359 How do you count the number of elements in an array in Java? count = myArray.length; 2024-09-05
3360 How do you count the number of elements in a vector in C++? count = myVector.size(); 2024-09-05
3361 How do you remove an element from a list in Python? my_list.remove(element) 2024-09-05
3362 How do you remove an element from an array in JavaScript? myArray.splice(index, 1) 2024-09-05
3363 How do you remove an element from an array in Java? myArray = ArrayUtils.removeElement(myArray, element); 2024-09-05
3364 How do you remove an element from a vector in C++? myVector.erase(std::remove(myVector.begin(), myVector.end(), element), myVector.end()); 2024-09-05
3365 How do you find the index of an element in a list in Python? index = my_list.index(element) 2024-09-05
3366 How do you find the index of an element in an array in JavaScript? index = myArray.indexOf(element) 2024-09-05
3367 How do you find the index of an element in an array in Java? int index = Arrays.asList(myArray).indexOf(element); 2024-09-05
3368 How do you find the index of an element in a vector in C++? auto it = std::find(myVector.begin(), myVector.end(), element); if (it != myVector.end()) { int index = std::distance(myVector.begin(), it); } 2024-09-05
3369 How do you sort a list in Python? my_list.sort() 2024-09-05
3370 How do you sort an array in JavaScript? myArray.sort() 2024-09-05
3371 How do you sort an array in Java? Arrays.sort(myArray) 2024-09-05
3372 How do you sort a vector in C++? std::sort(myVector.begin(), myVector.end()); 2024-09-05
3373 How do you shuffle a list in Python? import random random.shuffle(my_list) 2024-09-05
3374 How do you shuffle an array in JavaScript? myArray.sort(() => Math.random() - 0.5) 2024-09-05
3375 How do you shuffle an array in Java? Collections.shuffle(Arrays.asList(myArray)); 2024-09-05
3376 How do you shuffle a vector in C++? std::random_shuffle(myVector.begin(), myVector.end()); 2024-09-05
3377 How do you join a list of strings into a single string in Python? result = " ".join(my_list) 2024-09-05
3378 How do you join an array of strings into a single string in JavaScript? result = myArray.join(" "); 2024-09-05
3379 How do you join an array of strings into a single string in Java? String result = String.join(" ", myArray); 2024-09-05
3380 How do you join a vector of strings into a single string in C++? std::string result = std::accumulate(myVector.begin(), myVector.end(), std::string("")); 2024-09-05
3381 How do you filter a list in Python? filtered_list = [x for x in my_list if condition] 2024-09-05
3382 How do you filter an array in JavaScript? filteredArray = myArray.filter(condition) 2024-09-05
3383 How do you filter an array in Java? int[] filteredArray = Arrays.stream(myArray).filter(condition).toArray(); 2024-09-05
3384 How do you filter a vector in C++? myVector.erase(std::remove_if(myVector.begin(), myVector.end(), condition), myVector.end()); 2024-09-05
3385 How do you map a function over a list in Python? mapped_list = list(map(function, my_list)) 2024-09-05
3386 How do you map a function over an array in JavaScript? mappedArray = myArray.map(function) 2024-09-05
3387 How do you map a function over an array in Java? int[] mappedArray = Arrays.stream(myArray).map(function).toArray(); 2024-09-05
3388 How do you map a function over a vector in C++? std::transform(myVector.begin(), myVector.end(), myVector.begin(), function); 2024-09-05
3389 How do you reduce a list to a single value in Python? result = functools.reduce(function, my_list) 2024-09-05
3390 How do you reduce an array to a single value in JavaScript? result = myArray.reduce(function) 2024-09-05
3391 How do you reduce an array to a single value in Java? int result = Arrays.stream(myArray).reduce(0, function); 2024-09-05
3392 How do you reduce a vector to a single value in C++? int result = std::accumulate(myVector.begin(), myVector.end(), 0); 2024-09-05
3393 How do you convert a list to a set in Python? my_set = set(my_list) 2024-09-05
3394 How do you convert an array to a set in JavaScript? mySet = new Set(myArray) 2024-09-05
3395 How do you convert an array to a set in Java? Set mySet = new HashSet<>(Arrays.asList(myArray)); 2024-09-05
3396 How do you convert a vector to a set in C++? std::set mySet(myVector.begin(), myVector.end()); 2024-09-05
3397 How do you convert a list to a string in Python? result = str(my_list) 2024-09-05
3398 How do you convert an array to a string in JavaScript? result = myArray.toString(); 2024-09-05
3399 How do you convert an array to a string in Java? String result = Arrays.toString(myArray); 2024-09-05
3400 How do you convert a vector to a string in C++? std::stringstream ss; for (int i : myVector) ss << i << " "; std::string result = ss.str(); 2024-09-05
3401 How do you calculate the factorial of a number in Python? def factorial(n): return 1 if n == 0 else n * factorial(n-1) 2024-09-05
3402 How do you calculate the Fibonacci sequence in Python? def fibonacci(n): if n <= 1: return n else: return(fibonacci(n-1) + fibonacci(n-2)) 2024-09-05
3403 How do you reverse a string in JavaScript? let reversed = str.split("").reverse().join(""); 2024-09-05
3404 How do you reverse a string in Java? String reversed = new StringBuilder(str).reverse().toString(); 2024-09-05
3405 How do you check if a string is a palindrome in Python? def is_palindrome(s): return s == s[::-1] 2024-09-05
3406 How do you find the largest number in an array in JavaScript? let largest = Math.max(...array); 2024-09-05
3407 How do you find the smallest number in an array in Java? int smallest = Arrays.stream(array).min().getAsInt(); 2024-09-05
3408 How do you generate a random number in Python? import random random_number = random.randint(1, 100) 2024-09-05
3409 How do you generate a random number in JavaScript? let randomNumber = Math.floor(Math.random() * 100); 2024-09-05
3410 How do you create a simple HTTP server in Python? import http.server import socketserver PORT = 8080 Handler = http.server.SimpleHTTPRequestHandler with socketserver.TCPServer(("", PORT), Handler) as httpd: print("serving at port", PORT) httpd.serve_forever() 2024-09-05
3411 How do you create a simple HTTP server in Node.js? const http = require("http"); http.createServer((req, res) => { res.write("Hello World"); res.end(); }).listen(8080); 2024-09-05
3412 How do you write a file in Python? with open("filename.txt", "w") as file: file.write("Hello, World!") 2024-09-05
3413 How do you write a file in JavaScript? const fs = require("fs"); fs.writeFile("filename.txt", "Hello, World!", (err) => { if (err) throw err; console.log("The file has been saved!"); }); 2024-09-05
3414 How do you sort an array of integers in Python? sorted_array = sorted(my_array) 2024-09-05
3415 How do you sort an array of integers in JavaScript? myArray.sort((a, b) => a - b); 2024-09-05
3416 How do you sort an array of integers in Java? Arrays.sort(myArray); 2024-09-05
3417 How do you convert a string to an integer in Python? my_int = int(my_string) 2024-09-05
3418 How do you convert a string to an integer in JavaScript? let myInt = parseInt(myString); 2024-09-05
3419 How do you convert a string to an integer in Java? int myInt = Integer.parseInt(myString); 2024-09-05
3420 How do you concatenate two strings in Python? result = string1 + string2 2024-09-05
3421 How do you concatenate two strings in JavaScript? let result = string1 + string2; 2024-09-05
3422 How do you concatenate two strings in Java? String result = string1.concat(string2); 2024-09-05
3423 How do you check if a number is even in Python? def is_even(n): return n % 2 == 0 2024-09-05
3424 How do you check if a number is even in JavaScript? function isEven(n) { return n % 2 === 0; } 2024-09-05
3425 How do you check if a number is even in Java? boolean isEven = (n % 2 == 0); 2024-09-05
3426 How do you swap two variables in Python? a, b = b, a 2024-09-05
3427 How do you swap two variables in JavaScript? [a, b] = [b, a]; 2024-09-05
3428 How do you swap two variables in Java? int temp = a; a = b; b = temp; 2024-09-05
3429 How do you create a class in Python? class MyClass: def __init__(self): pass 2024-09-05
3430 How do you create a class in JavaScript? class MyClass { constructor() { // constructor body } } 2024-09-05
3431 How do you create a class in Java? class MyClass { MyClass() { // constructor body } } 2024-09-05
3432 How do you declare a variable in Python? x = 10 2024-09-05
3433 How do you declare a variable in JavaScript? let x = 10; 2024-09-05
3434 How do you declare a variable in Java? int x = 10; 2024-09-05
3435 How do you create a list in Python? my_list = [1, 2, 3] 2024-09-05
3436 How do you create an array in JavaScript? let myArray = [1, 2, 3]; 2024-09-05
3437 How do you create an array in Java? int[] myArray = {1, 2, 3}; 2024-09-05
3438 How do you create a function in Python? def my_function(): print("Hello World") 2024-09-05
3439 How do you create a function in JavaScript? function myFunction() { console.log("Hello World"); } 2024-09-05
3440 How do you create a method in Java? public void myMethod() { System.out.println("Hello World"); } 2024-09-05
3441 How do you loop through a list in Python? for item in my_list: print(item) 2024-09-05
3442 How do you loop through an array in JavaScript? myArray.forEach(item => console.log(item)); 2024-09-05
3443 How do you loop through an array in Java? for(int i = 0; i < myArray.length; i++) { System.out.println(myArray[i]); } 2024-09-05
3444 How do you handle exceptions in Python? try: # code except Exception as e: print(e) 2024-09-05
3445 How do you handle exceptions in JavaScript? try { // code } catch (e) { console.log(e); } 2024-09-05
3446 How do you handle exceptions in Java? try { // code } catch (Exception e) { e.printStackTrace(); } 2024-09-05
3447 How do you read a file in Python? with open("file.txt", "r") as file: data = file.read() 2024-09-05
3448 How do you read a file in JavaScript? const fs = require("fs"); fs.readFile("file.txt", "utf8", (err, data) => { if (err) throw err; console.log(data); }); 2024-09-05
3449 How do you read a file in Java? BufferedReader reader = new BufferedReader(new FileReader("file.txt")); String line; while ((line = reader.readLine()) != null) { System.out.println(line); } 2024-09-05
3450 How do you write a function that returns multiple values in Python? def my_function(): return value1, value2 2024-09-05
3451 How do you return multiple values from a function in JavaScript? function myFunction() { return [value1, value2]; } 2024-09-05
3452 How do you return multiple values from a function in Java? public Object[] myFunction() { return new Object[]{value1, value2}; } 2024-09-05
3453 How do you find the length of a list in Python? list_length = len(my_list) 2024-09-05
3454 How do you find the length of an array in JavaScript? let length = myArray.length; 2024-09-05
3455 How do you find the length of an array in Java? int length = myArray.length; 2024-09-05
3456 How do you remove an item from a list in Python? my_list.remove(item) 2024-09-05
3457 How do you remove an item from an array in JavaScript? myArray.splice(index, 1); 2024-09-05
3458 How do you remove an element from an array in Java? List list = new ArrayList<>(Arrays.asList(array)); list.remove(Integer.valueOf(element)); 2024-09-05
3459 How do you reverse a string in Python? reversed_string = my_string[::-1] 2024-09-05
3460 How do you reverse a string in JavaScript? let reversed = myString.split("").reverse().join(""); 2024-09-05
3461 How do you reverse a string in Java? String reversed = new StringBuilder(myString).reverse().toString(); 2024-09-05
3462 How do you create a dictionary in Python? my_dict = {"key": "value"} 2024-09-05
3463 How do you create an object in JavaScript? let myObject = {key: "value"}; 2024-09-05
3464 How do you create a HashMap in Java? HashMap myMap = new HashMap<>(); 2024-09-05
3465 How do you sort a list in Python? sorted_list = sorted(my_list) 2024-09-05
3466 How do you sort an array in JavaScript? myArray.sort(); 2024-09-05
3467 How do you sort an array in Java? Arrays.sort(myArray); 2024-09-05
3468 How do you check if a key exists in a Python dictionary? "key" in my_dict 2024-09-05
3469 How do you check if a property exists in a JavaScript object? if ("key" in myObject) { ... } 2024-09-05
3470 How do you check if a key exists in a Java HashMap? if (myMap.containsKey("key")) { ... } 2024-09-05
3471 How do you write a recursive function in Python? def factorial(n): if n == 1: return 1 else: return n * factorial(n-1) 2024-09-05
3472 How do you write a recursive function in JavaScript? function factorial(n) { if (n === 1) return 1; return n * factorial(n - 1); } 2024-09-05
3473 How do you write a recursive function in Java? public int factorial(int n) { if (n == 1) return 1; return n * factorial(n - 1); } 2024-09-05
3474 How do you write a lambda function in Python? lambda_func = lambda x: x + 10 2024-09-05
3475 How do you write an arrow function in JavaScript? const addTen = (x) => x + 10; 2024-09-05
3476 How do you create an anonymous class in Java? Runnable myRunnable = new Runnable() { public void run() { System.out.println("Running"); } }; 2024-09-05
3477 How do you merge two lists in Python? merged_list = list1 + list2 2024-09-05
3478 How do you merge two arrays in JavaScript? let mergedArray = array1.concat(array2); 2024-09-05
3479 How do you merge two arrays in Java? int[] mergedArray = Stream.concat(Arrays.stream(array1), Arrays.stream(array2)).toArray(); 2024-09-05
3480 How do you remove duplicates from a list in Python? unique_list = list(set(my_list)) 2024-09-05
3481 How do you remove duplicates from an array in JavaScript? let uniqueArray = [...new Set(myArray)]; 2024-09-05
3482 How do you remove duplicates from an array in Java? Set uniqueSet = new HashSet<>(Arrays.asList(myArray)); 2024-09-05
3483 How do you generate a random number in Python? import random random_number = random.randint(1, 100) 2024-09-05
3484 How do you generate a random number in JavaScript? let randomNumber = Math.floor(Math.random() * 100) + 1; 2024-09-05
3485 How do you generate a random number in Java? Random random = new Random(); int randomNumber = random.nextInt(100); 2024-09-05
3486 How do you check if a list is empty in Python? if not my_list: # List is empty 2024-09-05
3487 How do you check if an array is empty in JavaScript? if (myArray.length === 0) { // Array is empty } 2024-09-05
3488 How do you reverse a string in Python? You can reverse a string in Python using slicing: `reversed_string = original_string[::-1]`. 2024-09-05
3489 What is a for loop in JavaScript? A for loop in JavaScript is used to execute a block of code a certain number of times. Syntax: `for (initialization; condition; update) { // code to be executed }`. 2024-09-05
3490 How do you declare a variable in Java? In Java, you declare a variable by specifying the type followed by the variable name: `int variableName;` 2024-09-05
3491 What is a tuple in Python? A tuple in Python is an immutable sequence type. It is created using parentheses: `my_tuple = (1, 2, 3)`. 2024-09-05
3492 How do you create a function in C++? In C++, you create a function by specifying the return type, function name, and parameters: `returnType functionName(parameters) { // function body }`. 2024-09-05
3493 What is the purpose of the `try` block in Java? The `try` block in Java is used to enclose code that might throw an exception. It is followed by one or more `catch` blocks to handle the exceptions. 2024-09-05
3494 How do you declare a constant in C#? In C#, you declare a constant using the `const` keyword: `const int MAX_VALUE = 100;` 2024-09-05
3495 What is a lambda function in JavaScript? A lambda function in JavaScript is an anonymous function defined with the arrow syntax: `const myFunction = (parameters) => { // code }`. 2024-09-05
3496 How do you handle exceptions in Python? In Python, exceptions are handled using the `try` and `except` blocks: `try: // code except ExceptionType: // handle exception`. 2024-09-05
3497 What is a class in Java? A class in Java is a blueprint for creating objects. It defines attributes (fields) and methods (functions) that the objects created from the class will have. 2024-09-05
3498 How do you read a file in Python? In Python, you can read a file using the `open` function with the read mode: `with open('filename.txt', 'r') as file: content = file.read()`. 2024-09-05
3499 What is the use of `this` keyword in Java? The `this` keyword in Java refers to the current instance of the class. It is used to access instance variables and methods from within the class. 2024-09-05
3500 How do you create a list in Python? In Python, you create a list using square brackets: `my_list = [1, 2, 3, 4]`. 2024-09-05
3501 What is a switch statement in C++? A switch statement in C++ allows multi-way branching. Syntax: `switch (expression) { case value1: // code; break; case value2: // code; break; default: // code; }`. 2024-09-05
3502 How do you define a class in Python? In Python, you define a class using the `class` keyword: `class MyClass: def __init__(self, value): self.value = value`. 2024-09-05
3503 What is the purpose of the `main` function in C? In C, the `main` function is the entry point of the program. It is where execution begins and can return an integer to the operating system. 2024-09-05
3504 How do you declare an array in JavaScript? In JavaScript, you declare an array using square brackets: `let myArray = [1, 2, 3, 4]`. 2024-09-05
3505 What is the difference between `==` and `===` in JavaScript? `==` compares values for equality with type coercion, while `===` compares both value and type without coercion. 2024-09-05
3506 How do you create a constructor in C++? In C++, a constructor is created by defining a method with the same name as the class and no return type: `ClassName() { // constructor body }`. 2024-09-05
3507 What is the purpose of the `break` statement in C? The `break` statement in C is used to exit from a loop or switch statement prematurely. 2024-09-05
3508 How do you create a dictionary in Python? In Python, you create a dictionary using curly braces: `my_dict = {'key1': 'value1', 'key2': 'value2'}`. 2024-09-05
3509 What is the `self` keyword in Python? The `self` keyword in Python represents the instance of the class. It is used to access variables and methods associated with the instance. 2024-09-05
3510 How do you concatenate strings in Java? In Java, you concatenate strings using the `+` operator: `String result = str1 + str2;`. 2024-09-05
3511 What is a destructor in C++? A destructor in C++ is a method that is called when an object is destroyed. It has the same name as the class prefixed with a tilde: `~ClassName() { // destructor body }`. 2024-09-05
3512 How do you declare a method in Java? In Java, you declare a method by specifying the return type, method name, and parameters: `returnType methodName(parameters) { // method body }`. 2024-09-05
3513 What is a set in Python? A set in Python is an unordered collection of unique items. It is created using curly braces: `my_set = {1, 2, 3}`. 2024-09-05
3514 How do you define a function in JavaScript? In JavaScript, you define a function using the `function` keyword: `function myFunction(parameters) { // function body }`. 2024-09-05
3515 What is the difference between `let` and `var` in JavaScript? `let` has block scope while `var` has function scope. `let` also does not hoist, whereas `var` does. 2024-09-05
3516 How do you create a method in Python? In Python, you create a method inside a class using the `def` keyword: `def method_name(self, parameters):`. 2024-09-05
3517 What is a `void` function in C++? A `void` function in C++ does not return a value. Its return type is `void`: `void functionName() { // code }`. 2024-09-05
3518 How do you initialize a list in Java? In Java, you can initialize a list using the `ArrayList` class: `List list = new ArrayList<>(Arrays.asList("item1", "item2"));`. 2024-09-05
3519 What is the purpose of the `return` statement in Python? The `return` statement is used to exit a function and return a value to the caller. 2024-09-05
3520 How do you create a set in Java? In Java, you create a set using the `HashSet` class: `Set set = new HashSet<>(Arrays.asList("item1", "item2"));`. 2024-09-05
3521 What is a method signature in Java? A method signature in Java includes the method name and parameter list, but not the return type: `methodName(parameterType1, parameterType2)`. 2024-09-05
3522 How do you handle files in C++? In C++, you handle files using file streams. You include the `fstream` header and use `ifstream` for reading and `ofstream` for writing. 2024-09-05
3523 What is the purpose of the `continue` statement in Java? The `continue` statement in Java skips the current iteration of a loop and proceeds to the next iteration. 2024-09-05
3524 How do you declare a static variable in C++? In C++, you declare a static variable inside a class using the `static` keyword: `static int staticVar;`. 2024-09-05
3525 What is a generator in Python? A generator in Python is a function that returns an iterator. It is defined using `yield` instead of `return`. 2024-09-05
3526 How do you define a variable in PHP? In PHP, you define a variable with the `$` symbol: `$variableName = value;`. 2024-09-05
3527 What is the purpose of the `continue` statement in Python? The `continue` statement in Python skips the rest of the code inside a loop for the current iteration and proceeds to the next iteration. 2024-09-05
3528 How do you define a constant in JavaScript? In JavaScript, you define a constant using the `const` keyword: `const MY_CONSTANT = 100;`. 2024-09-05
3529 What is the purpose of the `abstract` class in Java? An `abstract` class in Java cannot be instantiated and is used to define methods that must be implemented by subclasses. 2024-09-05
3530 How do you create a thread in Java? In Java, you create a thread by implementing the `Runnable` interface or extending the `Thread` class: `class MyThread extends Thread { public void run() { // code } }`. 2024-09-05
3531 What is the purpose of the `static` keyword in Java? The `static` keyword in Java indicates that a member belongs to the class rather than any instance of the class. 2024-09-05
3532 How do you handle exceptions in C++? In C++, exceptions are handled using `try`, `catch`, and `throw`: `try { // code } catch (ExceptionType e) { // handle exception }`. 2024-09-05
3533 What is a constructor in Python? A constructor in Python is a special method called `__init__` that is automatically called when an object is created. 2024-09-05
3534 How do you create an object in JavaScript? In JavaScript, you create an object using object literals: `let obj = { key1: value1, key2: value2 };`. 2024-09-05
3535 What is the purpose of the `volatile` keyword in C? The `volatile` keyword in C tells the compiler that the value of a variable may change at any time, preventing optimizations that assume its value is constant. 2024-09-05
3536 How do you access an element in a list in Python? In Python, you access an element in a list using indexing: `element = my_list[index]`. 2024-09-05
3537 What is the use of the `super` keyword in Java? The `super` keyword in Java is used to refer to the superclass of the current object. It can be used to call superclass methods and constructors. 2024-09-05
3538 How do you create a method in C++? In C++, you create a method by defining it within a class: `returnType methodName(parameters) { // method body }`. 2024-09-05
3539 What is a `queue` in Java? A `queue` in Java is a data structure that follows the FIFO (First In, First Out) principle. It can be implemented using the `Queue` interface. 2024-09-05
3540 How do you declare a constant in Java? In Java, you declare a constant using the `final` keyword: `final int MAX_VALUE = 100;`. 2024-09-05
3541 What is a `linked list` in C++? A `linked list` in C++ is a data structure where elements (nodes) are linked using pointers. Each node contains data and a pointer to the next node. 2024-09-05
3542 How do you handle null values in Java? In Java, you handle null values by checking for null before using an object: `if (object != null) { // use object }`. 2024-09-05
3543 What is the purpose of `continue` in C++? The `continue` statement in C++ skips the rest of the code inside a loop for the current iteration and proceeds with the next iteration. 2024-09-05
3544 How do you declare a function in PHP? In PHP, you declare a function using the `function` keyword: `function myFunction($param) { // code }`. 2024-09-05
3545 What is the difference between `while` and `do-while` loops in C++? In a `while` loop, the condition is checked before the loop executes. In a `do-while` loop, the condition is checked after the loop executes. 2024-09-05
3546 How do you define a class in C#? In C#, you define a class using the `class` keyword: `class MyClass { public int MyProperty { get; set; } }`. 2024-09-05
3547 What is a `deque` in Python? A `deque` (double-ended queue) in Python is a data structure from the `collections` module that allows fast appends and pops from both ends: `from collections import deque`. 2024-09-05
3548 How do you perform type conversion in Java? In Java, you perform type conversion using casting: `int num = (int) doubleValue;`. 2024-09-05
3549 What is a lambda expression in C#? A lambda expression in C# is an anonymous function that can be used to create delegates or expression tree types: `x => x * x`. 2024-09-05
3550 How do you define an interface in Java? In Java, you define an interface using the `interface` keyword: `interface MyInterface { void myMethod(); }`. 2024-09-05
3551 What is a `struct` in C++? A `struct` in C++ is a user-defined data type that groups related variables. It is similar to a class but with public members by default. 2024-09-05
3552 How do you check if a list is empty in Python? In Python, you can check if a list is empty using the condition `if not my_list:`. 2024-09-05
3553 What is the purpose of the `default` keyword in C++? The `default` keyword in C++ is used to specify default behavior for special member functions like constructors, destructors, and assignment operators. 2024-09-05
3554 How do you implement inheritance in Java? In Java, you implement inheritance using the `extends` keyword: `class SubClass extends SuperClass { }`. 2024-09-05
3555 What is a `thread` in Java? A `thread` in Java is a lightweight process that runs concurrently with other threads. It is created by extending the `Thread` class or implementing the `Runnable` interface. 2024-09-05
3556 How do you declare a dictionary in PHP? In PHP, you declare a dictionary using associative arrays: `$myDict = array("key1" => "value1", "key2" => "value2");`. 2024-09-05
3557 What is the purpose of the `break` statement in Python? The `break` statement in Python is used to exit a loop prematurely, bypassing the remaining code in the loop and continuing execution after the loop. 2024-09-05
3558 How do you create a method in Java? In Java, you create a method by specifying the return type, method name, and parameters: `returnType methodName(parameters) { // method body }`. 2024-09-05
3559 What is a `constructor` in JavaScript? In JavaScript, a constructor is a special function used to create and initialize objects. It is defined with the `function` keyword and called with the `new` keyword: `function MyConstructor() { this.value = 1; }`. 2024-09-05
3560 How do you create an array in C#? In C#, you create an array by specifying the type and size: `int[] myArray = new int[10];`. 2024-09-05
3561 What is the purpose of the `synchronized` keyword in Java? The `synchronized` keyword in Java is used to control access to a block of code or an object by multiple threads, ensuring that only one thread can access the code at a time. 2024-09-05
3562 How do you handle exceptions in JavaScript? In JavaScript, exceptions are handled using `try`, `catch`, and `finally`: `try { // code } catch (error) { // handle error } finally { // cleanup }`. 2024-09-05
3563 What is the `null` keyword in JavaScript? In JavaScript, `null` is a special value representing the intentional absence of any object value. 2024-09-05
3564 How do you declare a variable in C++? In C++, you declare a variable by specifying its type and name: `type variableName;`. 2024-09-05
3565 What is a `pointer` in C++? A `pointer` in C++ is a variable that stores the memory address of another variable. It is declared using the `*` operator: `int* ptr;`. 2024-09-05
3566 How do you create a file in Python? In Python, you create a file by opening it in write mode: `with open('filename.txt', 'w') as file: file.write('content')`. 2024-09-05
3567 What is the purpose of the `new` keyword in C++? The `new` keyword in C++ is used to allocate memory dynamically for an object or array and returns a pointer to the allocated memory. 2024-09-05
3568 How do you define a static method in Java? In Java, you define a static method using the `static` keyword: `public static void myMethod() { // code }`. 2024-09-05
3569 What is a `list comprehension` in Python? A list comprehension in Python is a concise way to create lists using a single line of code: `[expression for item in iterable if condition]`. 2024-09-05
3570 How do you create a dictionary in Python? In Python, you create a dictionary using curly braces and key-value pairs: `my_dict = {'key1': 'value1', 'key2': 'value2'}`. 2024-09-05
3571 What is the purpose of the `return` statement in Java? The `return` statement in Java is used to exit a method and optionally return a value to the caller. 2024-09-05
3572 How do you create a method in PHP? In PHP, you create a method within a class using the `function` keyword: `function methodName() { // code }`. 2024-09-05
3573 What is the `interface` keyword used for in C#? In C#, the `interface` keyword is used to define an interface, which specifies a contract that implementing classes must adhere to: `interface IMyInterface { void MyMethod(); }`. 2024-09-05
3574 How do you initialize a variable in Java? In Java, you initialize a variable by assigning a value to it: `int x = 10;`. 2024-09-05
3575 What is a `binary search` algorithm? A `binary search` algorithm is used to find the position of a target value within a sorted array by repeatedly dividing the search interval in half. 2024-09-05
3576 How do you create a class in Python? In Python, you create a class using the `class` keyword: `class MyClass: def __init__(self): # code`. 2024-09-05
3577 What is the purpose of the `this` keyword in JavaScript? The `this` keyword in JavaScript refers to the object that is currently executing the code or the context in which a function was called. 2024-09-05
3578 How do you create a variable in C#? In C#, you create a variable by specifying its type and name: `int myVariable;`. 2024-09-05
3579 What is the `finally` block in JavaScript? The `finally` block in JavaScript is used in conjunction with `try` and `catch` to execute code after exception handling, regardless of whether an exception was thrown. 2024-09-05
3580 How do you declare a constant in Python? In Python, you declare a constant by defining a variable in uppercase: `MY_CONSTANT = 100`. 2024-09-05
3581 What is the `extends` keyword used for in Java? The `extends` keyword in Java is used to create a subclass from a superclass, allowing the subclass to inherit methods and fields from the superclass. 2024-09-05
3582 How do you access a class variable in Python? In Python, you access a class variable using the class name: `ClassName.variableName`. 2024-09-05
3583 What is a `static` class in C#? A `static` class in C# is a class that cannot be instantiated and can only contain static members: `public static class MyStaticClass { }`. 2024-09-05
3584 How do you declare a function in JavaScript? In JavaScript, you declare a function using the `function` keyword: `function myFunction() { // code }`. 2024-09-05
3585 What is a `virtual` function in C++? A `virtual` function in C++ is a function declared in a base class that can be overridden in a derived class: `virtual void myFunction();`. 2024-09-05
3586 How do you create a map in Java? In Java, you create a map using the `HashMap` class: `Map map = new HashMap<>();`. 2024-09-05
3587 What is the `final` keyword used for in Java? The `final` keyword in Java is used to define constants, prevent method overriding, and inheritance of classes: `final int MAX_VALUE = 100;`. 2024-09-05
3588 How do you create a set in Python? In Python, you create a set using curly braces or the `set()` constructor: `my_set = {1, 2, 3}` or `my_set = set([1, 2, 3])`. 2024-09-05
3589 What is the `volatile` keyword in Java? The `volatile` keyword in Java indicates that a variable’s value will be modified by different threads, ensuring that changes are visible to all threads. 2024-09-05
3590 How do you define a method in C#? In C#, you define a method by specifying its return type, name, and parameters: `returnType MethodName(parameters) { // method body }`. 2024-09-05
3591 What is a `hash table` in Java? A `hash table` in Java is a data structure that maps keys to values using a hash function. It is implemented by the `HashMap` class. 2024-09-05
3592 How do you access a class variable in Java? In Java, you access a class variable using the class name: `ClassName.variableName`. 2024-09-05
3593 What is a `base class` in C++? A `base class` in C++ is a class that provides common attributes and methods for derived classes. It is also known as a parent class or superclass. 2024-09-05
3594 How do you define a property in C#? In C#, you define a property using the `get` and `set` accessors: `public int MyProperty { get; set; }`. 2024-09-05
3595 What is a `hash set` in Java? A `hash set` in Java is a data structure that implements the `Set` interface using a hash table. It is implemented by the `HashSet` class. 2024-09-05
3596 How do you handle errors in C#? In C#, errors are handled using `try`, `catch`, `finally`, and `throw`: `try { // code } catch (Exception e) { // handle exception } finally { // cleanup }`. 2024-09-05
3597 What is the `using` directive in C#? The `using` directive in C# is used to include namespaces in a file: `using System;`. 2024-09-05
3598 How do you declare a variable in PHP? In PHP, you declare a variable using the `$` symbol: `$myVariable = value;`. 2024-09-05
3599 What is the purpose of the `abstract` keyword in Java? The `abstract` keyword in Java is used to declare classes and methods that cannot be instantiated or used directly but must be extended or implemented by other classes. 2024-09-05
3600 How do you create a constructor in C++? In C++, you create a constructor by defining a method with the same name as the class and no return type: `ClassName() { // code }`. 2024-09-05
3601 How do you handle exceptions in Python? In Python, exceptions are handled using `try` and `except`: `try: # code except Exception as e: # handle exception`. 2024-09-05
3602 What is a `struct` in C++? A `struct` in C++ is a user-defined data type that groups related variables: `struct MyStruct { int x; float y; };`. 2024-09-05
3603 How do you define a function in JavaScript? In JavaScript, you define a function using the `function` keyword: `function myFunction() { // code }`. 2024-09-05
3604 What is the purpose of `void` in C#? In C#, `void` specifies that a method does not return a value: `void myMethod() { // code }`. 2024-09-05
3605 How do you declare a constant in Java? In Java, you declare a constant using the `final` keyword: `public static final int MY_CONSTANT = 10;`. 2024-09-05
3606 What is the use of `super()` in Python? In Python, `super()` is used to call methods from a parent class: `class Child(Parent): def __init__(self): super().__init__()`. 2024-09-05
3607 How do you create a class in C#? In C#, you create a class using the `class` keyword: `class MyClass { // fields and methods }`. 2024-09-05
3608 What is a `lambda` function in Python? A `lambda` function in Python is an anonymous function defined with the `lambda` keyword: `lambda x: x * 2`. 2024-09-05
3609 How do you initialize a list in Java? In Java, you initialize a list using the `ArrayList` class: `List list = new ArrayList<>();`. 2024-09-05
3610 What is a `constructor` in Python? In Python, a `constructor` is defined using the `__init__` method: `class MyClass: def __init__(self, value): self.value = value`. 2024-09-05
3611 How do you create a `map` in C++? In C++, you create a `map` using the `std::map` class: `std::map myMap;`. 2024-09-05
3612 What is a `macro` in C? A `macro` in C is a preprocessor directive used to define constants or code snippets: `#define MAX 100`. 2024-09-05
3613 How do you handle null values in JavaScript? In JavaScript, you handle null values using conditional checks: `if (value === null) { // handle null }`. 2024-09-05
3614 What is a `closure` in JavaScript? A `closure` in JavaScript is a function that retains access to its lexical scope even when executed outside that scope: `function outer() { let x = 1; return function inner() { console.log(x); } }`. 2024-09-05
3615 How do you define a `tuple` in Python? In Python, you define a tuple using parentheses: `my_tuple = (1, 2, 3)`. 2024-09-05
3616 What is an `iterator` in Java? An `iterator` in Java is an object used to traverse a collection: `Iterator iterator = list.iterator();`. 2024-09-05
3617 How do you define a property in C#? In C#, you define a property using `get` and `set` accessors: `public int MyProperty { get; set; }`. 2024-09-05
3618 What is an `abstract` class in Java? An `abstract` class in Java cannot be instantiated and may contain abstract methods: `abstract class MyClass { abstract void myMethod(); }`. 2024-09-05
3619 How do you use `extends` in Java? In Java, `extends` is used to create a subclass: `class SubClass extends SuperClass { // code }`. 2024-09-05
3620 What is the difference between `==` and `===` in JavaScript? In JavaScript, `==` checks for equality with type coercion, while `===` checks for strict equality without type coercion: `a == b` vs `a === b`. 2024-09-05
3621 How do you create an array in JavaScript? In JavaScript, you create an array using square brackets: `let arr = [1, 2, 3];`. 2024-09-05
3622 What is a `linked list` in Python? A `linked list` in Python is a collection of nodes where each node contains data and a reference to the next node: `class Node: def __init__(self, data): self.data = data; self.next = None`. 2024-09-05
3623 How do you declare a variable in Ruby? In Ruby, you declare a variable without specifying its type: `my_var = 10`. 2024-09-05
3624 What is a `for` loop in Python? In Python, a `for` loop is used to iterate over a sequence: `for item in sequence: # code`. 2024-09-05
3625 How do you handle asynchronous operations in JavaScript? In JavaScript, you handle asynchronous operations using `async` and `await`: `async function myFunction() { await fetch(url); }`. 2024-09-05
3626 What is a `view` in MVC architecture? In MVC architecture, a `view` is responsible for displaying data to the user: `public IActionResult Index() { return View(); }`. 2024-09-05
3627 How do you define a `method` in Swift? In Swift, you define a method using the `func` keyword: `func myMethod() { // code }`. 2024-09-05
3628 What is a `hashmap` in Java? A `HashMap` in Java is a collection that maps keys to values: `HashMap map = new HashMap<>();`. 2024-09-05
3629 How do you implement recursion in Python? In Python, you implement recursion by defining a function that calls itself: `def factorial(n): if n == 0: return 1; return n * factorial(n - 1)`. 2024-09-05
3630 What is the `volatile` keyword in Java? The `volatile` keyword in Java indicates that a variable may be changed by multiple threads: `volatile int sharedVar;`. 2024-09-05
3631 How do you declare a `class` in Ruby? In Ruby, you declare a class using the `class` keyword: `class MyClass; end`. 2024-09-05
3632 What is a `callback` function in JavaScript? A `callback` function in JavaScript is a function passed as an argument to another function and executed after the completion of a task: `function process(data, callback) { callback(data); }`. 2024-09-05
3633 How do you create a `set` in Python? In Python, you create a set using curly braces: `my_set = {1, 2, 3}`. 2024-09-05
3634 What is a `context manager` in Python? A `context manager` in Python is used to manage resources with the `with` statement: `with open("file.txt") as file: # code`. 2024-09-05
3635 How do you create a new thread in Java? In Java, you create a new thread by implementing `Runnable` or extending `Thread`: `Thread t = new Thread(() -> { // code }); t.start();`. 2024-09-05
3636 What is a `private` method in Java? A `private` method in Java is accessible only within the class it is defined: `private void myMethod() { // code }`. 2024-09-05
3637 How do you use `try-catch` in C++? In C++, you use `try` and `catch` blocks for exception handling: `try { // code } catch (const std::exception& e) { // handle exception }`. 2024-09-05
3638 What is a `generic` method in Java? A `generic` method in Java allows for parameterized types: `public void printArray(T[] array) { for (T element : array) { System.out.println(element); } }`. 2024-09-05
3639 How do you use `await` in JavaScript? In JavaScript, `await` is used with `async` functions to wait for promises to resolve: `async function fetchData() { let data = await fetch(url); }`. 2024-09-05
3640 What is a `getter` method in Java? A `getter` method in Java is used to access the value of a private field: `public int getMyField() { return myField; }`. 2024-09-05
3641 How do you define an `enum` in C++? In C++, you define an `enum` using the `enum` keyword: `enum Color { RED, GREEN, BLUE };`. 2024-09-05
3642 What is a `module` in Python? A `module` in Python is a file containing Python definitions and statements: `# my_module.py`. 2024-09-05
3643 How do you declare a method in Swift? In Swift, you declare a method using the `func` keyword: `func myMethod() { // code }`. 2024-09-05
3644 What is a `volatile` keyword in C++? The `volatile` keyword in C++ indicates that a variable may be changed by external factors: `volatile int myVar;`. 2024-09-05
3645 How do you implement a stack in C++? In C++, you can implement a stack using the `std::stack` class: `std::stack myStack;`. 2024-09-05
3646 What is the `new` keyword in C++? The `new` keyword in C++ is used to allocate memory dynamically: `int* ptr = new int;`. 2024-09-05
3647 How do you create an object in JavaScript? In JavaScript, you create an object using curly braces: `let obj = { name: "John", age: 30 };`. 2024-09-05
3648 What is a `property` in Swift? In Swift, a `property` is a value associated with a class, struct, or enum: `class MyClass { var myProperty: Int = 0 }`. 2024-09-05
3649 How do you create a `hash` in Python? In Python, you create a hash using the `hash` function: `hash_value = hash("my_string")`. 2024-09-05
3650 What is a `subclass` in Java? A `subclass` in Java extends another class and inherits its fields and methods: `class SubClass extends SuperClass { // code }`. 2024-09-05
3651 How do you define a variable in Swift? In Swift, you define a variable using the `var` keyword: `var myVar = 10`. 2024-09-05
3652 What is a `dynamic array` in C++? A `dynamic array` in C++ is an array whose size can change at runtime: `int* arr = new int[10];`. 2024-09-05
3653 How do you create a `record` in Java? In Java, a `record` is a special class for data storage: `record Person(String name, int age) {}`. 2024-09-05
3654 What is a `template` in C++? A `template` in C++ allows for writing generic code: `template void print(T value) { std::cout << value; }`. 2024-09-05
3655 How do you declare a `pointer` in C++? In C++, you declare a pointer using the `*` symbol: `int* ptr;`. 2024-09-05
3656 What is a `callback` in Python? A `callback` in Python is a function passed as an argument to another function and executed later: `def callback(result): print(result); some_function(callback)`. 2024-09-05
3657 How do you create a `queue` in Java? In Java, you can create a `queue` using the `LinkedList` class: `Queue queue = new LinkedList<>();`. 2024-09-05
3658 What is the purpose of `interface` in Java? An `interface` in Java defines a contract that classes can implement: `interface MyInterface { void myMethod(); }`. 2024-09-05
3659 How do you handle `null` references in C#? In C#, you handle `null` references by checking for null: `if (myObject == null) { // handle null }`. 2024-09-05
3660 What is a `thread-safe` class? A `thread-safe` class is designed to be used by multiple threads concurrently without causing data corruption: `synchronized` keyword in Java can be used for this purpose. 2024-09-05
3661 How do you use `static` variables in Java? In Java, `static` variables are shared among all instances of a class: `static int count = 0;`. 2024-09-05
3662 What is a `functional interface` in Java? A `functional interface` in Java is an interface with exactly one abstract method: `@FunctionalInterface interface MyInterface { void myMethod(); }`. 2024-09-05
3663 How do you define a `closure` in Swift? In Swift, a `closure` is a self-contained block of code that can be passed around: `let myClosure = { (param: Int) -> Int in return param * 2 }`. 2024-09-05
3664 What is a `string` literal in Java? A `string` literal in Java is a sequence of characters enclosed in double quotes: `"Hello, World!"`. 2024-09-05
3665 How do you define a `map` in Python? In Python, you define a `map` using a dictionary: `my_map = {"key1": "value1", "key2": "value2"}`. 2024-09-05
3666 What is a `static` method in C++? A `static` method in C++ belongs to the class rather than instances: `class MyClass { static void myMethod() { // code } };`. 2024-09-05
3667 How do you create a `data structure` in JavaScript? In JavaScript, you create a data structure using objects and arrays: `let myData = { name: "John", age: 30 };`. 2024-09-05
3668 What is a `property` in C#? In C#, a `property` is a member that provides a mechanism to read, write, or compute values: `public int MyProperty { get; set; }`. 2024-09-05
3669 How do you use `enum` in Swift? In Swift, you use `enum` to define a set of related values: `enum CompassDirection { case north, south, east, west }`. 2024-09-05
3670 What is a `constructor` in JavaScript? A `constructor` in JavaScript is a special function used to create and initialize objects: `function Person(name) { this.name = name; }`. 2024-09-05
3671 How do you handle `errors` in Swift? In Swift, you handle errors using `do-catch` blocks: `do { try someFunction() } catch { // handle error }`. 2024-09-05
3672 What is a `range` in Python? In Python, a `range` is an immutable sequence of numbers: `range(0, 10)`. 2024-09-05
3673 How do you define an `interface` in C#? In C#, you define an `interface` using the `interface` keyword: `interface IMyInterface { void MyMethod(); }`. 2024-09-05
3674 What is a `declaration` in C++? A `declaration` in C++ introduces a variable or function: `int x;` or `void myFunction();`. 2024-09-05
3675 How do you create a `tuple` in Java? In Java, you can create a tuple-like structure using classes or libraries like `Pair` from Apache Commons: `Pair tuple = new Pair<>(1, "Hello");`. 2024-09-05
3676 What is a `data frame` in Python? A `data frame` in Python is a two-dimensional, size-mutable, and potentially heterogeneous tabular data structure provided by the `pandas` library: `import pandas as pd; df = pd.DataFrame(data)`. 2024-09-05
3677 How do you define a `constant` in C++? In C++, you define a `constant` using the `const` keyword: `const int MAX = 100;`. 2024-09-05
3678 What is a `virtual` method in C++? A `virtual` method in C++ is a method that can be overridden in derived classes: `virtual void myMethod() { // code }`. 2024-09-05
3679 How do you define a `macro` in C? In C, you define a `macro` using the `#define` directive: `#define PI 3.14`. 2024-09-05
3680 What is a `static` class in C#? In C#, a `static` class cannot be instantiated and contains only static members: `public static class MyStaticClass { public static void MyMethod() { // code } }`. 2024-09-05
3681 How do you define a `range` in JavaScript? In JavaScript, you can define a `range` using a loop or a custom function: `function range(start, end) { let arr = []; for (let i = start; i <= end; i++) arr.push(i); return arr; }`. 2024-09-05
3682 What is a `data type` in programming? A `data type` in programming specifies the kind of data a variable can hold: `int`, `float`, `string`, etc. 2024-09-05
3683 How do you create a `function` in JavaScript? In JavaScript, you create a function using the `function` keyword or an arrow function: `function myFunction() { // code }` or `const myFunction = () => { // code };`. 2024-09-05
3684 What is a `singleton` pattern in Java? A `singleton` pattern ensures that a class has only one instance: `public class Singleton { private static Singleton instance; private Singleton() {} public static Singleton getInstance() { if (instance == null) instance = new Singleton(); return instance; } }`. 2024-09-05
3685 How do you declare a variable in Python? In Python, you declare a variable simply by assigning a value: `my_var = 10`. 2024-09-05
3686 What is a `lambda` function in JavaScript? A `lambda` function in JavaScript is an anonymous function created using the arrow syntax: `const add = (a, b) => a + b;`. 2024-09-05
3687 How do you handle exceptions in Python? In Python, you handle exceptions using `try` and `except` blocks: `try: # code except Exception as e: # handle exception`. 2024-09-05
3688 What is the difference between `==` and `===` in JavaScript? In JavaScript, `==` is the equality operator that performs type coercion, while `===` is the strict equality operator that does not perform type coercion: `5 == '5'` is true, but `5 === '5'` is false. 2024-09-05
3689 How do you define a class in Python? In Python, you define a class using the `class` keyword: `class MyClass: def __init__(self): self.my_var = 0`. 2024-09-05
3690 What is the `super` keyword in Java? The `super` keyword in Java refers to the superclass of the current object and can be used to call its methods or constructors: `super.methodName()`. 2024-09-05
3691 How do you declare a constant in JavaScript? In JavaScript, you declare a constant using the `const` keyword: `const PI = 3.14;`. 2024-09-05
3692 What is the purpose of `self` in Python? In Python, `self` refers to the instance of the class itself and is used to access instance variables and methods: `self.variable`. 2024-09-05
3693 How do you create an array in Java? In Java, you create an array using square brackets: `int[] arr = new int[10];`. 2024-09-05
3694 What is a `foreach` loop in C#? A `foreach` loop in C# iterates over a collection or array: `foreach (var item in collection) { // code }`. 2024-09-05
3695 How do you define a `function` in Java? In Java, you define a function within a class using the `method` syntax: `public void myMethod() { // code }`. 2024-09-05
3696 What is a `data structure`? A `data structure` is a way of organizing and storing data so that it can be accessed and modified efficiently: examples include arrays, linked lists, and hash tables. 2024-09-05
3697 How do you declare a pointer in C? In C, you declare a pointer using the `*` symbol: `int *ptr;`. 2024-09-05
3698 What is the `class` keyword in C++? The `class` keyword in C++ is used to define a new class: `class MyClass { public: int myVar; };`. 2024-09-05
3699 How do you use `import` in Python? In Python, you use `import` to include modules or packages: `import module_name` or `from module_name import function_name`. 2024-09-05
3700 What is an `interface` in TypeScript? An `interface` in TypeScript is a way to define the shape of an object: `interface Person { name: string; age: number; }`. 2024-09-05
3701 How do you create a `file` in JavaScript? In JavaScript, you create a file on the client side using the `Blob` API: `const blob = new Blob(["Hello, World!"], {type: "text/plain"});`. 2024-09-05
3702 What is a `thread` in Java? A `thread` in Java is a separate path of execution within a program: `Thread t = new Thread(() -> { // code }); t.start();`. 2024-09-05
3703 How do you handle `null` values in JavaScript? In JavaScript, you handle `null` values by checking them explicitly: `if (value === null) { // handle null }`. 2024-09-05
3704 What is the `async` keyword in JavaScript? The `async` keyword in JavaScript is used to declare an asynchronous function: `async function fetchData() { // code }`. 2024-09-05
3705 How do you define a `method` in Swift? In Swift, you define a method using the `func` keyword: `func myMethod() { // code }`. 2024-09-05
3706 What is a `constructor` in C++? A `constructor` in C++ is a special method used to initialize objects: `MyClass() { // initialization code }`. 2024-09-05
3707 How do you declare a `variable` in Swift? In Swift, you declare a variable using the `var` keyword: `var myVar = 10`. 2024-09-05
3708 What is the `this` keyword in Java? The `this` keyword in Java refers to the current instance of a class: `this.myVar`. 2024-09-05
3709 How do you create an `object` in C#? In C#, you create an object using the `new` keyword: `MyClass obj = new MyClass();`. 2024-09-05
3710 What is a `map` in JavaScript? A `map` in JavaScript is a collection of key-value pairs where keys are unique: `let myMap = new Map(); myMap.set("key", "value");`. 2024-09-05
3711 How do you define a `variable` in Java? In Java, you define a variable with a type and a name: `int myVar = 10;`. 2024-09-05
3712 What is a `null` reference? A `null` reference is a reference that does not point to any object or memory location: `Object obj = null;`. 2024-09-05
3713 How do you implement inheritance in Python? In Python, you implement inheritance by passing the parent class as a parameter: `class Child(Parent):`. 2024-09-05
3714 What is the `var` keyword in JavaScript? The `var` keyword in JavaScript declares a variable that is function-scoped or globally-scoped: `var myVar = 10;`. 2024-09-05
3715 How do you create a `dictionary` in Python? In Python, you create a `dictionary` using curly braces: `my_dict = {"key1": "value1", "key2": "value2"}`. 2024-09-05
3716 What is a `function` in JavaScript? A `function` in JavaScript is a block of code designed to perform a task: `function myFunction() { // code }`. 2024-09-05
3717 How do you define a `property` in JavaScript? In JavaScript, you define a `property` on an object using dot notation or square brackets: `obj.property = value` or `obj["property"] = value`. 2024-09-05
3718 What is a `static` method in Java? A `static` method in Java belongs to the class rather than instances: `public static void myMethod() { // code }`. 2024-09-05
3719 How do you declare a `list` in Python? In Python, you declare a `list` using square brackets: `my_list = [1, 2, 3]`. 2024-09-05
3720 What is the `protected` access modifier in Java? The `protected` access modifier in Java allows access within the same package and subclasses: `protected int myVar;`. 2024-09-05
3721 How do you define a `struct` in C++? In C++, you define a `struct` using the `struct` keyword: `struct MyStruct { int myVar; };`. 2024-09-05
3722 What is a `promise` in JavaScript? A `promise` in JavaScript represents a value that will be available in the future: `let promise = new Promise((resolve, reject) => { // code });`. 2024-09-05
3723 How do you define a `constant` in Python? In Python, you define a `constant` by convention using uppercase variable names: `PI = 3.14`. 2024-09-05
3724 What is a `record` in Java? A `record` in Java is a special kind of class that is immutable and primarily used to store data: `record Person(String name, int age) {}`. 2024-09-05
3725 How do you use `try-catch` in C#? In C#, you use `try-catch` blocks to handle exceptions: `try { // code } catch (Exception ex) { // handle exception }`. 2024-09-05
3726 What is a `static` class in Java? A `static` class in Java is a class that cannot be instantiated and contains only static members: `public static class MyStaticClass {}`. 2024-09-05
3727 How do you define a `boolean` in C? In C, you define a `boolean` type using `stdbool.h` header: `#include bool myBool = true;`. 2024-09-05
3728 What is the `continue` statement in Java? The `continue` statement in Java skips the remaining code in the current loop iteration and proceeds with the next iteration: `continue;`. 2024-09-05
3729 How do you define a `string` in Swift? In Swift, you define a `string` using double quotes: `let myString = "Hello, World!"`. 2024-09-05
3730 What is a `getter` and `setter` in Java? In Java, a `getter` method retrieves the value of a private field, while a `setter` method sets its value: `public int getValue() { return value; } public void setValue(int value) { this.value = value; }`. 2024-09-05
3731 How do you create an `object` in Python? In Python, you create an object by instantiating a class: `obj = MyClass()`. 2024-09-05
3732 What is an `abstract` class in Java? An `abstract` class in Java cannot be instantiated and may contain abstract methods: `abstract class MyAbstractClass { abstract void myMethod(); }`. 2024-09-05
3733 How do you define a `method` in C#? In C#, you define a method within a class using the `method` syntax: `public void MyMethod() { // code }`. 2024-09-05
3734 What is a `type` alias in TypeScript? A `type` alias in TypeScript creates a new name for a type: `type StringOrNumber = string | number;`. 2024-09-05
3735 How do you use `default` parameters in JavaScript? In JavaScript, you use `default` parameters in functions to provide default values: `function greet(name = "Guest") { console.log("Hello, " + name); }`. 2024-09-05
3736 What is a `getter` in Python? A `getter` in Python is a method used to access the value of a private attribute: `@property def my_attr(self): return self._my_attr`. 2024-09-05
3737 How do you use `set` in Python? In Python, you create a `set` using curly braces or the `set()` constructor: `my_set = {1, 2, 3}` or `my_set = set([1, 2, 3])`. 2024-09-05
3738 What is a `method` in Swift? In Swift, a `method` is a function that is associated with a type or instance: `func myMethod() { // code }`. 2024-09-05
3739 How do you handle `null` values in Java? In Java, you handle `null` values by checking for them explicitly: `if (object == null) { // handle null }`. 2024-09-05
3740 What is a `callback` in JavaScript? A `callback` in JavaScript is a function passed as an argument to another function: `function processData(callback) { callback(); }`. 2024-09-05
3741 How do you declare a `list` in Java? In Java, you declare a `list` using the `List` interface and an implementation like `ArrayList`: `List myList = new ArrayList<>();`. 2024-09-05
3742 What is a `generator` in Python? A `generator` in Python is a function that returns an iterator using the `yield` keyword: `def my_generator(): yield 1`. 2024-09-05
3743 How do you create a `class` in JavaScript? In JavaScript, you create a class using the `class` keyword: `class MyClass { constructor() { this.myVar = 0; } }`. 2024-09-05
3744 What is a `constructor` in C#? A `constructor` in C# is a special method used to initialize objects: `public MyClass() { // initialization code }`. 2024-09-05
3745 How do you use `interface` in C#? In C#, you use `interface` to define a contract that classes must implement: `interface IMyInterface { void MyMethod(); }`. 2024-09-05
3746 What is a `hash table` in Java? A `hash table` in Java is a data structure that maps keys to values: `HashMap map = new HashMap<>();`. 2024-09-05
3747 How do you use `extends` in TypeScript? In TypeScript, `extends` is used to create a subclass or extend an interface: `class Child extends Parent { }` or `interface Child extends Parent { }`. 2024-09-05
3748 What is the `public` access modifier in Java? The `public` access modifier in Java allows access from any other class: `public int myVar;`. 2024-09-05
3749 How do you create a `function` in Swift? In Swift, you create a function using the `func` keyword: `func add(a: Int, b: Int) -> Int { return a + b }`. 2024-09-05
3750 What is a `struct` in Swift? A `struct` in Swift is a value type that can store data and provide methods: `struct Point { var x: Int; var y: Int }`. 2024-09-05
3751 How do you use `super` in Swift? In Swift, you use `super` to call methods or access properties from a superclass: `super.methodName()`. 2024-09-05
3752 What is an `enum` in TypeScript? An `enum` in TypeScript is a way to define a set of named constants: `enum Color { Red, Green, Blue }`. 2024-09-05
3753 How do you create an `object` in JavaScript? In JavaScript, you create an object using curly braces or the `new` keyword: `let obj = { key: "value" }` or `let obj = new Object();`. 2024-09-05
3754 What is a `template` in C++? A `template` in C++ allows functions and classes to operate with generic types: `template void myFunction(T arg) { // code }`. 2024-09-05
3755 How do you handle `undefined` values in JavaScript? In JavaScript, you handle `undefined` values by checking if a variable is `undefined`: `if (variable === undefined) { // handle undefined }`. 2024-09-05
3756 What is a `tuple` in Python? A `tuple` in Python is an immutable sequence of values: `my_tuple = (1, 2, 3)`. 2024-09-05
3757 How do you define a `variable` in JavaScript? In JavaScript, you define a variable using `var`, `let`, or `const`: `let myVar = 10;`. 2024-09-05
3758 What is a `while` loop in Python? A `while` loop in Python repeatedly executes a block of code as long as a condition is true: `while condition: # code`. 2024-09-05
3759 How do you create a `private` method in Java? In Java, you create a `private` method by using the `private` access modifier: `private void myMethod() { // code }`. 2024-09-05
3760 What is a `deque` in Python? A `deque` (double-ended queue) in Python is a type of list that allows adding and removing elements from both ends efficiently: `from collections import deque; d = deque()`. 2024-09-05
3761 How do you define a `variable` in C++? In C++, you define a variable by specifying its type and name: `int myVar = 10;`. 2024-09-05
3762 What is an `iterator` in Java? An `iterator` in Java is an object that allows traversal through a collection: `Iterator it = list.iterator(); while (it.hasNext()) { String item = it.next(); }`. 2024-09-05
3763 How do you use `map` in Python? In Python, you use the `map()` function to apply a function to all items in an iterable: `map(function, iterable)`. 2024-09-05
3764 What is a `closure` in JavaScript? A `closure` in JavaScript is a function that retains access to its lexical scope, even when the function is executed outside that scope: `function outer() { let x = 10; return function inner() { return x; }; }`. 2024-09-05
3765 How do you define a `method` in JavaScript? In JavaScript, you define a method within an object or class: `const obj = { myMethod() { // code } };` or `class MyClass { myMethod() { // code } }`. 2024-09-05
3766 What is a `tuple` in Python? A `tuple` in Python is an immutable sequence of values: `my_tuple = (1, 2, 3)`. 2024-09-05
3767 How do you create a `list` in JavaScript? In JavaScript, you create a `list` using arrays: `let myList = [1, 2, 3];`. 2024-09-05
3768 What is `lambda` in Python? A `lambda` in Python is an anonymous function defined with `lambda` keyword: `lambda x: x * 2`. 2024-09-05
3769 How do you use `const` in JavaScript? In JavaScript, you declare a `const` variable to create a constant reference: `const pi = 3.14;`. 2024-09-05
3770 What is a `constructor` in Java? A `constructor` in Java is a special method used to initialize objects: `public MyClass() { // initialization code }`. 2024-09-05
3771 How do you use `char` in C++? In C++, you use `char` to store single characters: `char myChar = 'A';`. 2024-09-05
3772 What is a `class` in Python? A `class` in Python is a blueprint for creating objects: `class MyClass: def __init__(self): pass`. 2024-09-05
3773 How do you use `return` in JavaScript? In JavaScript, you use `return` to exit a function and optionally pass back a value: `function myFunc() { return 42; }`. 2024-09-05
3774 What is a `method` in Java? A `method` in Java is a block of code within a class that performs a task: `public void myMethod() { // code }`. 2024-09-05
3775 How do you use `namespace` in C++? In C++, you use `namespace` to group related functions and variables: `namespace MyNamespace { void myFunc(); }`. 2024-09-05
3776 What is an `interface` in C#? An `interface` in C# defines a contract that classes must implement: `interface IMyInterface { void MyMethod(); }`. 2024-09-05
3777 How do you use `public` in Java? In Java, `public` is an access modifier that allows visibility of classes, methods, and variables from any other class: `public class MyClass { }`. 2024-09-05
3778 What is `inheritance` in Java? Inheritance in Java is a mechanism where a new class extends an existing class: `class Child extends Parent { }`. 2024-09-05
3779 How do you use `var` in JavaScript? In JavaScript, `var` declares a variable with function scope: `var myVar = 10;`. 2024-09-05
3780 What is a `list` in Python? A `list` in Python is an ordered, mutable collection of items: `my_list = [1, 2, 3]`. 2024-09-05
3781 How do you use `assert` in Java? In Java, `assert` is used to test assumptions in code: `assert x > 0 : "x must be positive";`. 2024-09-05
3782 What is a `tuple` in JavaScript? A `tuple` is not a native data structure in JavaScript, but you can simulate it using arrays: `const myTuple = [1, "text", true];`. 2024-09-05
3783 How do you use `constructor` in Python? In Python, you use `__init__` as a constructor method to initialize class instances: `def __init__(self):`. 2024-09-05
3784 What is `dynamic typing`? Dynamic typing means variables are not bound to a specific data type and can change types at runtime: `let x = 10; x = "text";`. 2024-09-05
3785 How do you use `inheritance` in C#? In C#, you use `inheritance` to create a derived class from a base class: `class Derived : Base { }`. 2024-09-05
3786 What is a `data structure` in programming? A `data structure` is a way to organize and store data for efficient access and modification: `arrays, linked lists, stacks, queues`. 2024-09-05
3787 How do you use `override` in Java? In Java, you use `override` to provide a specific implementation of a method in a subclass: `@Override public void myMethod() { }`. 2024-09-05
3788 What is a `stack` data structure? A `stack` is a linear data structure that follows the Last In First Out (LIFO) principle: `push` and `pop` operations. 2024-09-05
3789 How do you use `list` comprehension in Python? In Python, you use list comprehension to create lists in a concise way: `[x * 2 for x in range(10)]`. 2024-09-05
3790 What is a `dictionary` in Python? A `dictionary` in Python is an unordered collection of key-value pairs: `my_dict = {"key": "value"}`. 2024-09-05
3791 How do you use `spread` operator in JavaScript? In JavaScript, the `spread` operator `...` is used to expand an array into individual elements: `let arr = [1, 2, 3]; let newArr = [...arr, 4];`. 2024-09-05
3792 What is a `queue` data structure? A `queue` is a linear data structure that follows the First In First Out (FIFO) principle: `enqueue` and `dequeue` operations. 2024-09-05
3793 How do you use `constructor` overloading in Java? In Java, you use constructor overloading by defining multiple constructors with different parameters: `public MyClass(int a) { } public MyClass(String b) { }`. 2024-09-05
3794 What is a `pointer` in C++? A `pointer` in C++ is a variable that holds the memory address of another variable: `int *ptr = &var;`. 2024-09-05
3795 How do you use `break` in Python? In Python, `break` is used to exit a loop prematurely: `for x in range(10): if x == 5: break`. 2024-09-05
3796 What is a `set` in Python? A `set` in Python is an unordered collection of unique elements: `my_set = {1, 2, 3}`. 2024-09-05
3797 How do you use `try-catch` in Java? In Java, `try-catch` blocks handle exceptions: `try { // code } catch (Exception e) { // error handling }`. 2024-09-05
3798 What is a `graph` data structure? A `graph` is a collection of nodes (vertices) and edges connecting them: `Graph { vertices, edges }`. 2024-09-05
3799 How do you use `get` and `set` methods in Java? In Java, `get` and `set` methods are used to access and modify private class fields: `public int getValue() { return value; } public void setValue(int value) { this.value = value; }`. 2024-09-05
3800 What is a `node` in a linked list? A `node` in a linked list is an element that contains data and a reference to the next node: `Node { data, next }`. 2024-09-05
3801 How do you use `public static` in Java? In Java, `public static` defines a method or variable that belongs to the class rather than any instance: `public static void myMethod() { }`. 2024-09-05
3802 What is `hashing` in programming? Hashing is a technique to convert data into a fixed-size value, typically used in hash tables: `hashFunction(data)`. 2024-09-05
3803 How do you use `float` in C++? In C++, you use `float` to store floating-point numbers: `float myFloat = 3.14f;`. 2024-09-05
3804 What is `method overriding` in Java? Method overriding in Java allows a subclass to provide a specific implementation of a method already defined in its superclass: `@Override public void myMethod() { }`. 2024-09-05
3805 How do you use `yield` in Python? In Python, `yield` is used to create a generator function that produces a sequence of values: `def myGen(): yield 1; yield 2;`. 2024-09-05
3806 What is a `method` in C#? A `method` in C# is a block of code within a class that performs a specific action: `public void MyMethod() { }`. 2024-09-05
3807 How do you use `throw` in JavaScript? In JavaScript, `throw` is used to raise an exception: `throw new Error("Something went wrong");`. 2024-09-05
3808 What is a `hash table`? A `hash table` is a data structure that uses hash functions to map keys to values: `HashTable[key] = value`. 2024-09-05
3809 How do you use `do-while` loop in Java? In Java, a `do-while` loop executes a block of code at least once and then repeats it as long as a condition is true: `do { // code } while (condition);`. 2024-09-05
3810 What is a `binary tree`? A `binary tree` is a hierarchical data structure where each node has at most two children: `left` and `right`. 2024-09-05
3811 How do you use `event listeners` in JavaScript? In JavaScript, you use `event listeners` to handle events: `element.addEventListener("click", function() { // code });`. 2024-09-05
3812 What is a `method` in C++? A `method` in C++ is a function defined within a class: `class MyClass { void myMethod() { // code } };`. 2024-09-05
3813 How do you use `switch-case` in C++? In C++, you use `switch-case` to execute different code based on the value of an expression: `switch (value) { case 1: // code; break; }`. 2024-09-05
3814 What is a `deque` data structure? A `deque` (double-ended queue) is a data structure that allows insertion and removal of elements from both ends: `push_front`, `push_back`, `pop_front`, `pop_back`. 2024-09-05
3815 How do you use `switch` statement in JavaScript? In JavaScript, you use the `switch` statement to select one of many code blocks to execute: `switch (expression) { case value: // code; break; }`. 2024-09-05
3816 What is a `graph traversal`? Graph traversal is the process of visiting all nodes in a graph: `depth-first search (DFS)`, `breadth-first search (BFS)`. 2024-09-05
3817 How do you use `access modifiers` in Java? In Java, `access modifiers` control the visibility of classes, methods, and variables: `public`, `protected`, `private`. 2024-09-05
3818 What is a `priority queue`? A `priority queue` is a data structure that retrieves elements based on priority: `enqueue(element, priority)`, `dequeue()`. 2024-09-05
3819 How do you use `super` in Java? In Java, `super` is used to refer to the superclass of the current object: `super.methodName();`. 2024-09-05
3820 What is a `binary search` algorithm? A `binary search` algorithm finds an item in a sorted array by repeatedly dividing the search interval in half. 2024-09-05
3821 How do you use `for-each` loop in Java? In Java, you use the `for-each` loop to iterate over elements in a collection or array: `for (Type item : collection) { // code }`. 2024-09-05
3822 What is a `heap` data structure? A `heap` is a binary tree-based data structure that satisfies the heap property: `max-heap`, `min-heap`. 2024-09-05
3823 How do you use `final` keyword in Java? In Java, the `final` keyword defines constants, prevents method overriding, and inheritance: `final int x = 10;`, `final void myMethod() { }`. 2024-09-05
3824 What is a `hash function`? A `hash function` is an algorithm that maps data to a fixed-size value, used in hash tables and hashing algorithms. 2024-09-05
3825 How do you use `map` function in Python? In Python, the `map` function applies a given function to each item in an iterable: `map(function, iterable)`. 2024-09-05
3826 What is a `recursive function`? A `recursive function` is a function that calls itself: `function myFunc() { if (condition) myFunc(); }`. 2024-09-05
3827 How do you use `public` in C++? In C++, `public` access specifier allows members to be accessible from outside the class: `public: int value;`. 2024-09-05
3828 What is a `linked list`? A `linked list` is a data structure consisting of nodes where each node points to the next: `Node { data, next }`. 2024-09-05
3829 How do you use `float` in Python? In Python, `float` is used to store floating-point numbers: `my_float = 3.14`. 2024-09-05
3830 What is a `default constructor` in C++? A `default constructor` in C++ is a constructor that takes no arguments: `MyClass() { }`. 2024-09-05
3831 How do you use `lambda` functions in JavaScript? In JavaScript, `lambda` functions are called arrow functions: `const add = (a, b) => a + b;`. 2024-09-05
3832 What is a `singly linked list`? A `singly linked list` is a type of linked list where each node points to the next node: `Node { data, next }`. 2024-09-05
3833 How do you use `throw` in C++? In C++, `throw` is used to raise an exception: `throw std::runtime_error("Error message");`. 2024-09-05
3834 What is a `bubble sort` algorithm? A `bubble sort` algorithm repeatedly compares and swaps adjacent elements until the list is sorted. 2024-09-05
3835 How do you use `class` in C++? In C++, you use `class` to define a blueprint for objects: `class MyClass { public: void myMethod(); };`. 2024-09-05
3836 What is a `deque` in Python? A `deque` (double-ended queue) in Python is a data structure that supports adding and removing elements from both ends: `from collections import deque; d = deque([1, 2, 3])`. 2024-09-05
3837 How do you use `import` in Python? In Python, you use `import` to include modules and their functions: `import module_name; module_name.function_name()`. 2024-09-05
3838 What is a `dynamic array`? A `dynamic array` is an array that can resize itself when it exceeds its current capacity: `ArrayList` in Java, `Vector` in C++. 2024-09-05
3839 How do you use `void` in Java? In Java, `void` specifies that a method does not return a value: `public void myMethod() { }`. 2024-09-05
3840 What is a `binary search tree`? A `binary search tree` (BST) is a binary tree where each node has a key greater than its left child and less than its right child. 2024-09-05
3841 How do you use `public static` in C#? In C#, `public static` defines a method or field that belongs to the class itself rather than any instance: `public static void MyStaticMethod() { }`. 2024-09-05
3842 What is a `stack` data structure? A `stack` is a linear data structure that follows the Last In First Out (LIFO) principle: `push`, `pop` operations. 2024-09-05
3843 How do you use `finally` in Java? In Java, `finally` is used to execute code after a `try-catch` block, regardless of whether an exception occurred: `try { // code } catch (Exception e) { } finally { // cleanup }`. 2024-09-05
3844 What is a `linked list` in C++? A `linked list` in C++ is a data structure where each element (node) points to the next: `struct Node { int data; Node* next; };`. 2024-09-05
3845 How do you use `static` in Python? In Python, `static` is not used directly; instead, class-level methods and variables are created with `@staticmethod` and `@classmethod` decorators. 2024-09-05
3846 What is a `hash set`? A `hash set` is a collection that uses hash codes to store and manage unique elements: `HashSet` in Java, `set` in Python. 2024-09-05
3847 How do you use `assert` in Python? In Python, `assert` is used to perform debugging checks: `assert condition, "Error message"`. 2024-09-05
3848 What is a `doubly linked list`? A `doubly linked list` is a linked list where each node has references to both the next and previous nodes: `Node { data, next, prev }`. 2024-09-05
3849 How do you use `interface` in Java? In Java, you use `interface` to define a contract for classes to implement: `interface MyInterface { void myMethod(); }`. 2024-09-05
3850 What is `encapsulation` in object-oriented programming? Encapsulation is an object-oriented programming concept that restricts direct access to an object's data and methods: `private`, `protected`, `public` access modifiers. 2024-09-05
3851 How do you use `map` in JavaScript? In JavaScript, `map` is used to create a new array with the results of calling a function on every element of an existing array: `array.map(callbackFunction)`. 2024-09-05
3852 What is a `thread` in programming? A `thread` is a lightweight process that executes a sequence of instructions independently within a program: `Thread` class in Java, `threading` module in Python. 2024-09-05
3853 How do you use `synchronized` in Java? In Java, `synchronized` is used to control access to a block of code or method by multiple threads: `synchronized (object) { // code }`. 2024-09-05
3854 What is a `trie` data structure? A `trie` is a tree-like data structure used to store associative data, such as a dictionary of words: `TrieNode { children, isEndOfWord }`. 2024-09-05
3855 How do you use `finally` in Python? In Python, `finally` is used to define a block of code that will execute after `try` and `except`, regardless of whether an exception was raised: `try { // code } except Exception as e: // handle error } finally { // cleanup }`. 2024-09-05
3856 What is a `delegate` in C#? A `delegate` in C# is a type that represents references to methods with a particular parameter list and return type: `delegate void MyDelegate(int param);`. 2024-09-05
3857 How do you use `super` in C++? In C++, `super` is not a keyword. Instead, you use the base class name to call base class methods and constructors: `BaseClass::methodName();`. 2024-09-05
3858 What is `inheritance` in object-oriented programming? Inheritance is an object-oriented programming principle where a new class derives properties and methods from an existing class: `class Derived extends Base { }`. 2024-09-05
3859 How do you use `public` in Java? In Java, `public` access modifier allows classes, methods, and variables to be accessible from any other class: `public class MyClass { public void myMethod() { } }`. 2024-09-05
3860 What is a `linker`? A `linker` is a tool that combines object code files into a single executable or library, resolving references between them: `gcc -o output file1.o file2.o`. 2024-09-05
3861 How do you use `range` in Python? In Python, `range` generates a sequence of numbers: `range(start, stop, step)`. 2024-09-05
3862 What is a `singleton` design pattern? A `singleton` design pattern ensures that a class has only one instance and provides a global point of access to it: `public class Singleton { private static Singleton instance; private Singleton() { } public static Singleton getInstance() { if (instance == null) { instance = new Singleton(); } return instance; } }`. 2024-09-05
3863 How do you use `mutable` in C++? In C++, `mutable` allows a member variable of a class to be modified even if the object is `const`: `class MyClass { mutable int value; };`. 2024-09-05
3864 What is a `hash map`? A `hash map` is a data structure that maps keys to values using hash codes for efficient retrieval: `HashMap` in Java, `dict` in Python. 2024-09-05
3865 How do you use `protected` in Java? In Java, `protected` access modifier allows access within the same package and by subclasses: `protected int value;`. 2024-09-05
3866 What is `polymorphism` in object-oriented programming? Polymorphism is an object-oriented programming concept that allows objects of different classes to be treated as objects of a common superclass: `method overriding`, `method overloading`. 2024-09-05
3867 How do you use `continue` in Python? In Python, `continue` is used inside loops to skip the remaining code and continue with the next iteration: `for i in range(10): if i % 2 == 0: continue; print(i)`. 2024-09-05
3868 What is a `queue` data structure? A `queue` is a linear data structure that follows the First In First Out (FIFO) principle: `enqueue`, `dequeue` operations. 2024-09-05
3869 How do you use `switch` in Java? In Java, `switch` allows branching based on the value of an expression: `switch (variable) { case value1: // code break; case value2: // code break; default: // code }`. 2024-09-05
3870 What is a `hash table`? A `hash table` is a data structure that maps keys to values using hash codes to achieve efficient data retrieval: `HashTable` in Java, `dict` in Python. 2024-09-05
3871 How do you use `abstract` in Java? In Java, `abstract` is used to define abstract classes and methods that must be implemented by subclasses: `abstract class MyClass { abstract void myMethod(); }`. 2024-09-05
3872 What is a `graph` in computer science? A `graph` is a data structure consisting of nodes (vertices) connected by edges, representing relationships between entities: `directed`, `undirected`. 2024-09-05
3873 How do you use `try` and `except` in Python? In Python, `try` and `except` handle exceptions: `try { // code } except Exception as e: // handle error }`. 2024-09-05
3874 What is a `virtual function` in C++? A `virtual function` in C++ is a member function in a base class that can be overridden in derived classes: `virtual void myMethod();`. 2024-09-05
3875 How do you use `return` in Python? In Python, `return` is used to exit a function and optionally pass back a value: `def myFunction(): return value`. 2024-09-05
3876 What is a `composition` in object-oriented programming? Composition is an object-oriented programming principle where a class contains objects of other classes: `class A { private B b; }`. 2024-09-05
3877 How do you use `private` in Java? In Java, `private` access modifier restricts access to class members to within the same class: `private int value;`. 2024-09-05
3878 What is a `mutable` data type? A `mutable` data type allows modification of its state after creation: `list` in Python, `ArrayList` in Java. 2024-09-05
3879 How do you use `super` in Python? In Python, `super()` is used to call a method from a parent class: `super().methodName()`. 2024-09-05
3880 What is `dependency injection`? Dependency injection is a design pattern that allows a program to achieve inversion of control by passing dependencies to an object rather than having it construct them: `Spring Framework`. 2024-09-05
3881 How do you use `default arguments` in Python? In Python, `default arguments` are specified in function definitions: `def func(x, y=10):`. 2024-09-05
3882 What is `test coverage`? Test coverage measures the extent to which code is tested: `line coverage`, `branch coverage`. 2024-09-05
3883 How do you use `multi-threading` in Java? In Java, `multi-threading` is managed using the `Thread` class or `Runnable` interface: `new Thread(() -> { /* code */ }).start();`. 2024-09-05
3884 What is `RESTful API`? A RESTful API is an architectural style that uses HTTP requests to manage resources: `GET`, `POST`, `PUT`, `DELETE`. 2024-09-05
3885 How do you use `async/await` in JavaScript? In JavaScript, `async/await` simplifies asynchronous code: `async function fetchData() { const data = await fetch(url); }`. 2024-09-05
3886 What is `polymorphism` in object-oriented programming? Polymorphism allows objects to be treated as instances of their parent class: `method overriding`, `method overloading`. 2024-09-05
3887 How do you use `SQL indexes`? In SQL, `indexes` speed up data retrieval: `CREATE INDEX idx_name ON table_name(column_name);`. 2024-09-05
3888 What is `event-driven architecture`? Event-driven architecture focuses on producing and reacting to events: `event producers`, `event consumers`. 2024-09-05
3889 How do you use `encapsulation` in Java? In Java, `encapsulation` is achieved by using private fields and public getters/setters: `private int age; public int getAge() { return age; }`. 2024-09-05
3890 What is `back-end development`? Back-end development involves server-side programming: `Node.js`, `Django`, `Ruby on Rails`. 2024-09-05
3891 How do you use `callback functions` in JavaScript? In JavaScript, `callback functions` are passed as arguments to other functions: `function process(data, callback) { callback(data); }`. 2024-09-05
3892 What is `synchronous vs asynchronous programming`? Synchronous programming executes tasks sequentially: `function sync() { /* code */ }`. Asynchronous programming allows tasks to run concurrently: `async function async() { /* code */ }`. 2024-09-05
3893 How do you use `data structures` in Python? Python provides various data structures: `list`, `tuple`, `dict`, `set`. 2024-09-05
3894 What is `functional programming`? Functional programming treats computation as the evaluation of mathematical functions: `pure functions`, `higher-order functions`. 2024-09-05
3895 How do you use `object-oriented programming`? Object-oriented programming uses classes and objects to model real-world entities: `class`, `object`, `inheritance`. 2024-09-05
3896 What is `SQL normalization`? SQL normalization organizes data to reduce redundancy: `1NF`, `2NF`, `3NF`. 2024-09-05
3897 How do you use `inheritance` in Python? In Python, inheritance is achieved by defining a class that inherits from a parent class: `class Child(Parent):`. 2024-09-05
3898 What is `DevOps`? DevOps is a set of practices that combines software development and IT operations: `CI/CD`, `automation`, `monitoring`. 2024-09-05
3899 How do you use `unit testing` in Java? In Java, `unit testing` is performed using frameworks like JUnit: `@Test public void testMethod() { /* code */ }`. 2024-09-05
3900 What is `design patterns`? Design patterns are reusable solutions to common problems: `Singleton`, `Factory`, `Observer`. 2024-09-05
3901 How do you use `data validation`? Data validation ensures input meets criteria: `form validation`, `type checking`. 2024-09-05
3902 What is `cloud computing`? Cloud computing provides on-demand computing resources over the internet: `AWS`, `Azure`, `Google Cloud`. 2024-09-05
3903 How do you use `version control` in software development? Version control tracks changes to source code: `Git`, `SVN`. 2024-09-05
3904 What is `API documentation`? API documentation provides detailed information about APIs: `endpoints`, `parameters`, `responses`. 2024-09-05
3905 How do you use `hashing` in programming? Hashing converts data into fixed-size values: `hash functions`, `hash tables`. 2024-09-05
3906 What is `API rate limiting`? API rate limiting restricts the number of API requests: `throttling`, `rate limits`. 2024-09-05
3907 How do you use `environment variables`? Environment variables configure application settings: `process.env.VAR_NAME` in Node.js. 2024-09-05
3908 What is `graphQL`? GraphQL is a query language for APIs: `query`, `mutation`, `subscription`. 2024-09-05
3909 How do you use `git branching`? Git branching allows for parallel development: `git branch`, `git checkout`, `git merge`. 2024-09-05
3910 What is `continuous integration`? Continuous integration (CI) involves regularly merging code changes: `automated builds`, `tests`. 2024-09-05
3911 How do you use `event listeners` in JavaScript? Event listeners respond to events: `element.addEventListener("click", function() { /* code */ });`. 2024-09-05
3912 What is `message queue`? A message queue stores messages for asynchronous processing: `RabbitMQ`, `Kafka`. 2024-09-05
3913 How do you use `memory management` in programming? Memory management involves allocating and freeing memory: `malloc`, `free` in C/C++. 2024-09-05
3914 What is `data encryption`? Data encryption secures data by converting it into a coded format: `AES`, `RSA`. 2024-09-05
3915 How do you use `SQL subqueries`? SQL subqueries are nested queries within another query: `SELECT * FROM table WHERE id IN (SELECT id FROM other_table);`. 2024-09-05
3916 What is `data modeling`? Data modeling involves designing data structures: `ER diagrams`, `data schemas`. 2024-09-05
3917 How do you use `secure coding practices`? Secure coding practices prevent vulnerabilities: `input validation`, `output encoding`. 2024-09-05
3918 What is `microservices`? Microservices architecture breaks an application into small services: `independent`, `scalable`. 2024-09-05
3919 How do you use `mocking` in unit tests? Mocking simulates dependencies in unit tests: `Mockito`, `mock`. 2024-09-05
3920 What is `data integrity`? Data integrity ensures data accuracy and consistency: `constraints`, `validation`. 2024-09-05
3921 How do you use `serialization` in programming? Serialization converts objects to a storable format: `JSON`, `XML`, `pickle` in Python. 2024-09-05
3922 What is `API authentication`? API authentication verifies users accessing APIs: `OAuth`, `API keys`. 2024-09-05
3923 How do you use `ORM (Object-Relational Mapping)`? ORM maps objects to database tables: `Hibernate`, `Entity Framework`. 2024-09-05
3924 What is `code linting`? Code linting checks for programming errors: `ESLint`, `Pylint`. 2024-09-05
3925 How do you use `dependency management`? Dependency management handles libraries and packages: `npm`, `Maven`. 2024-09-05
3926 What is `API throttling`? API throttling limits request rates: `rate limits`, `API quotas`. 2024-09-05
3927 How do you use `data pagination`? Data pagination divides data into pages: `LIMIT`, `OFFSET` in SQL. 2024-09-05
3928 What is `API versioning`? API versioning manages changes in APIs: `version numbers`, `versioned endpoints`. 2024-09-05
3929 How do you use `Jenkins` for CI/CD? Jenkins automates build and deployment: `pipeline`, `jobs`. 2024-09-05
3930 What is `cache`? Cache stores frequently accessed data: `Redis`, `Memcached`. 2024-09-05
3931 How do you use `Docker`? Docker packages applications into containers: `Dockerfile`, `docker run`. 2024-09-05
3932 What is `load balancing`? Load balancing distributes incoming network traffic: `Nginx`, `HAProxy`. 2024-09-05
3933 How do you use `REST API` with `OAuth2`? OAuth2 provides secure API access: `authorization code`, `access tokens`. 2024-09-05
3934 What is `data warehousing`? Data warehousing involves collecting and managing data from multiple sources: `ETL`, `data marts`. 2024-09-05
3935 How do you use `error handling` in Python? Error handling in Python uses `try`, `except` blocks: `try: /* code */ except Exception as e: /* handle */`. 2024-09-05
3936 What is `scalability`? Scalability refers to the ability to handle growth: `horizontal scaling`, `vertical scaling`. 2024-09-05
3937 How do you use `async programming` in C#? Async programming in C# uses `async` and `await`: `public async Task DoWorkAsync() { await Task.Delay(1000); }`. 2024-09-05
3938 What is `containerization`? Containerization packages applications with their dependencies: `Docker`, `Kubernetes`. 2024-09-05
3939 How do you use `event sourcing`? Event sourcing captures state changes as events: `event store`, `event handlers`. 2024-09-05
3940 What is `big data`? Big data refers to large, complex datasets: `Hadoop`, `Spark`. 2024-09-05
3941 How do you use `API testing`? API testing verifies API functionality: `Postman`, `RestAssured`. 2024-09-05
3942 What is `DevSecOps`? DevSecOps integrates security into DevOps: `security automation`, `shift-left`. 2024-09-05
3943 How do you use `load testing`? Load testing evaluates system performance under load: `JMeter`, `load generators`. 2024-09-05
3944 What is `data mining`? Data mining extracts patterns from large datasets: `clustering`, `association rules`. 2024-09-05
3945 How do you use `code reviews`? Code reviews involve reviewing code changes: `pull requests`, `review tools`. 2024-09-05
3946 What is `microservices architecture`? Microservices architecture structures an application as a collection of small services: `independent`, `deployed`. 2024-09-05
3947 How do you use `API documentation tools`? API documentation tools generate API docs: `Swagger`, `Redoc`. 2024-09-05
3948 What is `machine learning`? Machine learning involves algorithms that learn from data: `supervised`, `unsupervised`. 2024-09-05
3949 How do you use `memory leak detection`? Memory leak detection identifies leaks: `Valgrind`, `profiler`. 2024-09-05
3950 What is `container orchestration`? Container orchestration manages container deployment: `Kubernetes`, `Docker Swarm`. 2024-09-05
3951 How do you use `WebSocket`? WebSocket provides full-duplex communication: `ws://`, `WebSocket API`. 2024-09-05
3952 What is `A/B testing`? A/B testing compares two versions: `A`, `B`. 2024-09-05
3953 How do you use `type checking` in TypeScript? TypeScript uses static type checking: `type`, `interface`. 2024-09-05
3954 What is `software architecture`? Software architecture defines the structure of software systems: `design patterns`, `architectural styles`. 2024-09-05
3955 How do you use `CI/CD pipelines`? CI/CD pipelines automate software development processes: `build`, `test`, `deploy`. 2024-09-05
3956 What is `RESTful API`? RESTful API uses HTTP methods: `GET`, `POST`, `PUT`, `DELETE`. 2024-09-05
3957 How do you use `Django` for web development? Django is a web framework for Python: `models`, `views`, `templates`. 2024-09-05
3958 What is `TypeScript`? TypeScript is a typed superset of JavaScript: `static types`, `compilation`. 2024-09-05
3959 How do you use `Nginx` as a web server? Nginx serves static and dynamic content: `reverse proxy`, `load balancing`. 2024-09-05
3960 What is `CI/CD`? CI/CD automates code integration and deployment: `continuous integration`, `continuous deployment`. 2024-09-05
3961 How do you use `Redux` with React? Redux manages application state: `store`, `reducers`, `actions`. 2024-09-05
3962 What is `GraphQL`? GraphQL is a query language for APIs: `schemas`, `queries`, `mutations`. 2024-09-05
3963 How do you use `Kubernetes` for container orchestration? Kubernetes manages containerized applications: `pods`, `services`, `deployments`. 2024-09-05
3964 What is `SQL`? SQL is a language for managing relational databases: `queries`, `tables`, `indexes`. 2024-09-05
3965 How do you use `JUnit` for Java testing? JUnit provides annotations for testing: `@Test`, `@Before`, `@After`. 2024-09-05
3966 What is `NoSQL`? NoSQL is a non-relational database type: `document`, `key-value`, `column-family`. 2024-09-05
3967 How do you use `Flask` for web applications? Flask is a lightweight Python web framework: `routes`, `templates`, `requests`. 2024-09-05
3968 What is `Docker`? Docker containers encapsulate applications: `images`, `containers`, `Dockerfile`. 2024-09-05
3969 How do you use `Jupyter Notebook`? Jupyter Notebook is for interactive computing: `code cells`, `markdown cells`, `visualizations`. 2024-09-05
3970 What is `Firebase`? Firebase provides backend services: `authentication`, `database`, `hosting`. 2024-09-05
3971 How do you use `Sass` in web development? Sass extends CSS with features: `variables`, `nesting`, `mixins`. 2024-09-05
3972 What is `OAuth`? OAuth is an authorization framework: `tokens`, `authorization server`, `resource server`. 2024-09-05
3973 How do you use `Swift` for iOS development? Swift is Apple’s programming language for iOS: `optionals`, `protocols`, `closures`. 2024-09-05
3974 What is `REST`? REST is an architectural style for networked applications: `stateless`, `resources`, `HTTP methods`. 2024-09-05
3975 How do you use `Vue.js` for frontend development? Vue.js is a JavaScript framework: `components`, `directives`, `reactivity`. 2024-09-05
3976 What is `Angular`? Angular is a TypeScript-based framework: `components`, `services`, `dependency injection`. 2024-09-05
3977 How do you use `Apache Kafka`? Apache Kafka handles real-time data streams: `topics`, `producers`, `consumers`. 2024-09-05
3978 What is `JWT`? JWT is a JSON-based token format: `claims`, `signature`, `header`. 2024-09-05
3979 How do you use `Spring Boot`? Spring Boot simplifies Java application development: `auto-configuration`, `starter projects`, `embedded servers`. 2024-09-05
3980 What is `Webpack`? Webpack bundles JavaScript modules: `entry`, `output`, `loaders`. 2024-09-05
3981 How do you use `Cypress` for end-to-end testing? Cypress provides a framework for testing web applications: `commands`, `assertions`, `fixtures`. 2024-09-05
3982 What is `MongoDB`? MongoDB is a NoSQL database: `document-oriented`, `collections`, `BSON`. 2024-09-05
3983 How do you use `R` for data analysis? R is a language for statistical computing: `data frames`, `ggplot2`, `dplyr`. 2024-09-05
3984 What is `Serverless computing`? Serverless computing abstracts server management: `functions`, `event-driven`, `scaling`. 2024-09-05
3985 How do you use `jQuery`? jQuery simplifies DOM manipulation: `selectors`, `events`, `AJAX`. 2024-09-05
3986 What is `Amazon Web Services (AWS)`? AWS provides cloud computing services: `EC2`, `S3`, `Lambda`. 2024-09-05
3987 How do you use `Mockito` for Java testing? Mockito provides mocking for unit tests: `mocks`, `stubs`, `verification`. 2024-09-05
3988 What is `Tailwind CSS`? Tailwind CSS is a utility-first CSS framework: `classes`, `customization`, `responsive`. 2024-09-05
3989 How do you use `Apache Maven`? Apache Maven manages project dependencies: `pom.xml`, `repositories`, `plugins`. 2024-09-05
3990 What is `Spring MVC`? Spring MVC is a framework for building web applications: `controllers`, `views`, `models`. 2024-09-05
3991 How do you use `Pandas` in Python? Pandas provides data structures for data analysis: `DataFrame`, `Series`, `groupby`. 2024-09-05
3992 What is `Selenium`? Selenium automates web browsers: `WebDriver`, `IDE`, `grid`. 2024-09-05
3993 How do you use `Jenkins` for CI/CD? Jenkins automates build and deployment: `jobs`, `pipelines`, `plugins`. 2024-09-05
3994 What is `WebAssembly`? WebAssembly enables high-performance web apps: `binary format`, `compilation`, `execution`. 2024-09-05
3995 How do you use `SQLAlchemy` with Python? SQLAlchemy provides ORM for database interactions: `sessions`, `models`, `queries`. 2024-09-05
3996 What is `Razor` in ASP.NET? Razor is a view engine for dynamic web pages: `syntax`, `layouts`, `HTML`. 2024-09-05
3997 How do you use `GIT` for version control? GIT manages code versions: `commits`, `branches`, `merges`. 2024-09-05
3998 What is `Elastic Beanstalk`? Elastic Beanstalk deploys web applications: `platform`, `scaling`, `management`. 2024-09-05
3999 How do you use `Laravel` for PHP development? Laravel is a PHP framework: `routes`, `Eloquent ORM`, `Blade templates`. 2024-09-05
4000 What is `jQuery UI`? jQuery UI extends jQuery: `widgets`, `effects`, `interactions`. 2024-09-05
4001 How do you use `React Hooks`? React Hooks manage state and effects: `useState`, `useEffect`, `custom hooks`. 2024-09-05
4002 What is `OpenAPI`? OpenAPI defines APIs: `specifications`, `endpoints`, `documentation`. 2024-09-05
4003 How do you use `Oracle Database`? Oracle Database manages relational data: `tables`, `SQL queries`, `PL/SQL`. 2024-09-05
4004 What is `OAuth 2.0`? OAuth 2.0 is an authorization framework: `access tokens`, `authorization code`, `refresh tokens`. 2024-09-05
4005 How do you use `Microsoft Azure`? Microsoft Azure offers cloud services: `virtual machines`, `app services`, `databases`. 2024-09-05
4006 What is `PHP`? PHP is a server-side scripting language: `dynamic web pages`, `databases`, `sessions`. 2024-09-05
4007 How do you use `Scala`? Scala is a programming language: `functional`, `object-oriented`, `JVM`. 2024-09-05
4008 What is `Redis`? Redis is an in-memory data store: `key-value`, `caching`, `pub/sub`. 2024-09-05
4009 How do you use `Apache Spark`? Apache Spark is for big data processing: `RDDs`, `DataFrames`, `Spark SQL`. 2024-09-05
4010 What is `JupyterLab`? JupyterLab is an IDE for Jupyter notebooks: `interactive notebooks`, `code editors`, `terminals`. 2024-09-05
4011 How do you use `Numpy` in Python? Numpy provides numerical computing: `arrays`, `linear algebra`, `statistics`. 2024-09-05
4012 What is `Firebase Authentication`? Firebase Authentication handles user identity: `sign-in methods`, `custom tokens`, `user management`. 2024-09-05
4013 How do you use `Jupyter Notebook` extensions? Jupyter Notebook extensions enhance functionality: `codefolding`, `snippets`, `table of contents`. 2024-09-05
4014 What is `Terraform`? Terraform manages infrastructure as code: `providers`, `resources`, `modules`. 2024-09-05
4015 How do you use `SwiftUI`? SwiftUI builds user interfaces in Swift: `views`, `modifiers`, `data binding`. 2024-09-05
4016 What is `ElasticSearch`? ElasticSearch is a search engine: `indexing`, `search queries`, `scalability`. 2024-09-05
4017 How do you use `React Native` for mobile development? React Native builds mobile apps with JavaScript: `components`, `native modules`, `navigation`. 2024-09-05
4018 What is `Vue Router`? Vue Router manages routing in Vue.js applications: `routes`, `navigation`, `guards`. 2024-09-05
4019 How do you use `MySQL`? MySQL is a relational database management system: `queries`, `indexes`, `transactions`. 2024-09-05
4020 What is `Apache Tomcat`? Apache Tomcat is a Java servlet container: `servlets`, `JSP`, `configuration`. 2024-09-05
4021 How do you use `Celery` with Django? Celery handles asynchronous tasks: `tasks`, `brokers`, `result backends`. 2024-09-05
4022 What is `Bootstrap`? Bootstrap is a CSS framework: `grid system`, `components`, `utilities`. 2024-09-05
4023 How do you use `Nginx` as a reverse proxy? Nginx forwards requests to backend servers: `proxy_pass`, `load balancing`, `caching`. 2024-09-05
4024 What is `Jenkins Pipeline`? Jenkins Pipeline defines CI/CD workflows: `stages`, `steps`, `scripts`. 2024-09-05
4025 How do you use `Docker Compose`? Docker Compose manages multi-container applications: `services`, `networks`, `volumes`. 2024-09-05
4026 What is `GraphQL`? GraphQL is a query language for APIs: `queries`, `mutations`, `schemas`. 2024-09-05
4027 How do you use `Django Rest Framework`? Django Rest Framework provides APIs: `serializers`, `views`, `routers`. 2024-09-05