Dev Leveling

Coding Challenges

Solve real-world problems, earn points, and level up your coding skills.

Latest Challenges

Sudoku Validator

Expert

Check if a Sudoku board is valid.

750 XP Start Challenge

N-Queens Problem

Legendary

Solve the N-Queens problem using backtracking.

1000 XP Start Challenge

Generate Parentheses

Advanced

Generate all combinations of valid parentheses.

500 XP Start Challenge

Climbing Stairs

Beginner

Count distinct ways to climb to the top with 1 or 2 steps.

100 XP Start Challenge

Max Subarray

Intermediate

Find the contiguous subarray with the largest sum.

250 XP Start Challenge

Coin Change

Legendary

Find the fewest number of coins needed to make up a given amount.

1000 XP Start Challenge