id
int64 1
10k
| question
stringclasses 10
values | solution
stringclasses 10
values | difficulty
stringclasses 3
values | topic
stringclasses 5
values |
|---|---|---|---|---|
9,701 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
9,702 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
medium
|
loops
|
9,703 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
9,704 |
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
|
9,705 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
medium
|
strings
|
9,706 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
9,707 |
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
|
9,708 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
hard
|
strings
|
9,709 |
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
|
9,710 |
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
|
9,711 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
9,712 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
hard
|
loops
|
9,713 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
9,714 |
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
|
9,715 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
9,716 |
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
|
9,717 |
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
|
9,718 |
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
|
9,719 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
9,720 |
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
|
9,721 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
9,722 |
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
|
9,723 |
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
|
9,724 |
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
|
9,725 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
9,726 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
9,727 |
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
|
9,728 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
9,729 |
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
|
9,730 |
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
|
9,731 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
9,732 |
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
|
9,733 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
medium
|
strings
|
9,734 |
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
|
9,735 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
9,736 |
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
|
9,737 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
9,738 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
hard
|
loops
|
9,739 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
medium
|
strings
|
9,740 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
9,741 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
9,742 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
9,743 |
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
|
9,744 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
easy
|
loops
|
9,745 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
9,746 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
9,747 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
9,748 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
medium
|
strings
|
9,749 |
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
|
9,750 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
hard
|
loops
|
9,751 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
9,752 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
9,753 |
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
|
9,754 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
9,755 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
9,756 |
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
|
9,757 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
9,758 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
hard
|
arrays
|
9,759 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
hard
|
strings
|
9,760 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
9,761 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
9,762 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
medium
|
loops
|
9,763 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
9,764 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
hard
|
loops
|
9,765 |
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
|
9,766 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
easy
|
strings
|
9,767 |
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
|
9,768 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
9,769 |
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
|
9,770 |
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
|
9,771 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
medium
|
arrays
|
9,772 |
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
|
9,773 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
9,774 |
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
|
9,775 |
Write a function that prints numbers from 1 to 100.
|
function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
}
|
hard
|
loops
|
9,776 |
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
|
9,777 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
hard
|
strings
|
9,778 |
Write a function that returns the sum of an array.
|
function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
}
|
easy
|
arrays
|
9,779 |
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
|
9,780 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
medium
|
arrays
|
9,781 |
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
|
9,782 |
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
|
9,783 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
9,784 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
9,785 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
9,786 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
hard
|
loops
|
9,787 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
9,788 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
medium
|
loops
|
9,789 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
9,790 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
medium
|
strings
|
9,791 |
Write a function that checks if a string is a palindrome.
|
function isPalindrome(s) {
return s === s.split('').reverse().join('');
}
|
hard
|
strings
|
9,792 |
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
|
9,793 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
hard
|
strings
|
9,794 |
Write a function that finds even numbers in an array.
|
function findEven(arr) {
return arr.filter(num => num % 2 === 0);
}
|
easy
|
loops
|
9,795 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
medium
|
strings
|
9,796 |
Write a function that removes duplicates from an array.
|
function removeDuplicates(arr) {
return [...new Set(arr)];
}
|
easy
|
arrays
|
9,797 |
Write a function that reverses a string.
|
function reverseString(s) {
return s.split('').reverse().join('');
}
|
easy
|
strings
|
9,798 |
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
|
9,799 |
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
|
9,800 |
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
|
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