id
int64 1
10k
| question
stringclasses 10
values | solution
stringclasses 10
values | difficulty
stringclasses 3
values | topic
stringclasses 5
values |
|---|---|---|---|---|
9,101 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | easy | strings |
9,102 | Write a function that removes duplicates from an array. | function removeDuplicates(arr) {
return [...new Set(arr)];
} | medium | arrays |
9,103 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | medium | strings |
9,104 | 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 |
9,105 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,106 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,107 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,108 | Write a function that removes duplicates from an array. | function removeDuplicates(arr) {
return [...new Set(arr)];
} | easy | arrays |
9,109 | 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 |
9,110 | 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 |
9,111 | 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 |
9,112 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | easy | loops |
9,113 | 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 |
9,114 | 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 |
9,115 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | easy | loops |
9,116 | 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 |
9,117 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | easy | arrays |
9,118 | 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 |
9,119 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | hard | strings |
9,120 | Write a function that removes duplicates from an array. | function removeDuplicates(arr) {
return [...new Set(arr)];
} | medium | arrays |
9,121 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | easy | loops |
9,122 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,123 | 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 |
9,124 | 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 |
9,125 | 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 |
9,126 | 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 |
9,127 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,128 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | easy | loops |
9,129 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,130 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | medium | loops |
9,131 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | medium | loops |
9,132 | 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 |
9,133 | 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 |
9,134 | 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 |
9,135 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,136 | 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 |
9,137 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,138 | 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 |
9,139 | 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 |
9,140 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | easy | loops |
9,141 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,142 | Write a function that removes duplicates from an array. | function removeDuplicates(arr) {
return [...new Set(arr)];
} | easy | arrays |
9,143 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,144 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | medium | loops |
9,145 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,146 | 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 |
9,147 | 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 |
9,148 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,149 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | easy | loops |
9,150 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | easy | arrays |
9,151 | 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;
} | hard | math |
9,152 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | easy | arrays |
9,153 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,154 | 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 |
9,155 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,156 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | medium | strings |
9,157 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,158 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | easy | arrays |
9,159 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,160 | 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 |
9,161 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,162 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | medium | loops |
9,163 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | medium | strings |
9,164 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | medium | loops |
9,165 | Write a function that prints numbers from 1 to 100. | function printNumbers() {
for (let i = 1; i <= 100; i++) {
console.log(i);
}
} | medium | loops |
9,166 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | easy | arrays |
9,167 | 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 |
9,168 | Write a function that removes duplicates from an array. | function removeDuplicates(arr) {
return [...new Set(arr)];
} | easy | arrays |
9,169 | Write a function that removes duplicates from an array. | function removeDuplicates(arr) {
return [...new Set(arr)];
} | hard | arrays |
9,170 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | easy | strings |
9,171 | 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 |
9,172 | 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 |
9,173 | 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 |
9,174 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | medium | strings |
9,175 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | medium | strings |
9,176 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | easy | arrays |
9,177 | Write a function that removes duplicates from an array. | function removeDuplicates(arr) {
return [...new Set(arr)];
} | hard | arrays |
9,178 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | easy | strings |
9,179 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,180 | 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 |
9,181 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | medium | strings |
9,182 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | medium | loops |
9,183 | 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 |
9,184 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | medium | strings |
9,185 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,186 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | easy | arrays |
9,187 | 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 |
9,188 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | medium | loops |
9,189 | 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 |
9,190 | 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 |
9,191 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | medium | arrays |
9,192 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | medium | arrays |
9,193 | 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 |
9,194 | Write a function that finds even numbers in an array. | function findEven(arr) {
return arr.filter(num => num % 2 === 0);
} | easy | loops |
9,195 | Write a function that returns the sum of an array. | function sumArray(arr) {
return arr.reduce((a, b) => a + b, 0);
} | medium | arrays |
9,196 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,197 | Write a function that reverses a string. | function reverseString(s) {
return s.split('').reverse().join('');
} | easy | strings |
9,198 | 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 |
9,199 | Write a function that checks if a string is a palindrome. | function isPalindrome(s) {
return s === s.split('').reverse().join('');
} | easy | strings |
9,200 | Write a function that removes duplicates from an array. | function removeDuplicates(arr) {
return [...new Set(arr)];
} | medium | arrays |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.