id
int64 1
10k
| question
stringclasses 10
values | solution
stringclasses 10
values | difficulty
stringclasses 3
values | topic
stringclasses 5
values |
|---|---|---|---|---|
101 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
easy
|
math
|
102 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
103 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
easy
|
math
|
104 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
105 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
easy
|
math
|
106 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
107 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
easy
|
math
|
108 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
easy
|
recursion
|
109 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
easy
|
math
|
110 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
111 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
112 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
113 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
114 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
medium
|
math
|
115 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
116 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
easy
|
math
|
117 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
hard
|
math
|
118 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
hard
|
recursion
|
119 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
120 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
medium
|
math
|
121 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
122 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
easy
|
recursion
|
123 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
124 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
medium
|
recursion
|
125 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
medium
|
math
|
126 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
127 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
medium
|
math
|
128 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
129 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
130 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
easy
|
math
|
131 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
132 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
133 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
134 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
easy
|
math
|
135 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
easy
|
recursion
|
136 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
137 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
138 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
139 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
140 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
141 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
easy
|
recursion
|
142 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
143 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
144 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
145 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
146 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
147 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
148 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
149 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
hard
|
arrays
|
150 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
medium
|
math
|
151 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
152 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
easy
|
recursion
|
153 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
154 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
155 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
156 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
157 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
easy
|
recursion
|
158 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
easy
|
math
|
159 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
160 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
medium
|
math
|
161 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
easy
|
math
|
162 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
163 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
medium
|
strings
|
164 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
easy
|
recursion
|
165 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
hard
|
strings
|
166 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
167 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
hard
|
recursion
|
168 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
169 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
170 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
medium
|
recursion
|
171 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
172 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
173 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
174 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
175 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
176 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
177 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
178 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
easy
|
math
|
179 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
180 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
181 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
medium
|
math
|
182 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
183 |
Write a function that checks if a number is prime.
|
function isPrime(n) {
if (n <= 1) return false;
for (let i = 2; i * i <= n; i++) {
if (n % i === 0) return false;
}
return true;
}
|
easy
|
math
|
184 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
hard
|
arrays
|
185 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
medium
|
recursion
|
186 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
hard
|
math
|
187 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
188 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
189 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
190 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
easy
|
math
|
191 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
192 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
easy
|
recursion
|
193 |
Write a function that returns the factorial of a number.
|
function factorial(n) {
if (n === 0) return 1;
return n * factorial(n - 1);
}
|
easy
|
math
|
194 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
195 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
196 |
Write a recursive function to sum an array.
|
function sumArrayRec(arr, index = 0) {
if (index >= arr.length) return 0;
return arr[index] + sumArrayRec(arr, index + 1);
}
|
easy
|
recursion
|
197 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
198 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
199 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
200 |
Write a recursive function to compute Fibonacci numbers.
|
function fibonacci(n) {
if (n <= 1) return n;
return fibonacci(n - 1) + fibonacci(n - 2);
}
|
hard
|
recursion
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.