id
int64 1
10k
| question
stringclasses 10
values | solution
stringclasses 10
values | difficulty
stringclasses 3
values | topic
stringclasses 5
values |
|---|---|---|---|---|
2,801 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
2,802 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,803 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
2,804 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
2,805 |
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
|
2,806 |
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
|
2,807 |
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
|
2,808 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
2,809 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
2,810 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,811 |
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
|
2,812 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
2,813 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
medium
|
loops
|
2,814 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
2,815 |
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
|
2,816 |
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
|
2,817 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,818 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
2,819 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
2,820 |
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
|
2,821 |
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
|
2,822 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
2,823 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
medium
|
strings
|
2,824 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
2,825 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,826 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
2,827 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
2,828 |
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
|
2,829 |
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
|
2,830 |
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
|
2,831 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,832 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
2,833 |
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
|
2,834 |
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
|
2,835 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,836 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
2,837 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
2,838 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,839 |
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);
}
|
medium
|
recursion
|
2,840 |
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
|
2,841 |
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
|
2,842 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,843 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
2,844 |
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
|
2,845 |
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
|
2,846 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
medium
|
loops
|
2,847 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
2,848 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
hard
|
strings
|
2,849 |
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
|
2,850 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
hard
|
loops
|
2,851 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
medium
|
strings
|
2,852 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
2,853 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,854 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
hard
|
loops
|
2,855 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,856 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,857 |
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
|
2,858 |
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
|
2,859 |
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);
}
|
medium
|
recursion
|
2,860 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,861 |
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);
}
|
medium
|
recursion
|
2,862 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
2,863 |
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
|
2,864 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
2,865 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
2,866 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,867 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
2,868 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
2,869 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
2,870 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
2,871 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,872 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,873 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
2,874 |
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
|
2,875 |
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
|
2,876 |
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
|
2,877 |
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
|
2,878 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
2,879 |
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
|
2,880 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,881 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
medium
|
loops
|
2,882 |
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
|
2,883 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,884 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,885 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
2,886 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,887 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
2,888 |
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
|
2,889 |
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
|
2,890 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
2,891 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,892 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
2,893 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
hard
|
loops
|
2,894 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
2,895 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
2,896 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
2,897 |
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
|
2,898 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
2,899 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
2,900 |
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
|
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