Coding Challenges

Practice. Prove. Get Hired. Solve real-world problems and showcase your skills to GCC employers.

243
Challenges
99
Easy
106
Medium
38
Hard

Number of Good Pairs

Arrays Array Hash Table Math
Easy

Kids With the Greatest Number of Candies

Arrays Array
Easy

Shuffle String

Strings Array String
Easy

Richest Customer Wealth

Arrays Array Matrix
Easy

Decompress Run-Length Encoded List

Arrays Array
Easy

Create Target Array

Arrays Array
Easy

Count Negative Numbers in Grid

Arrays Array Binary Search Matrix
Easy

Lucky Numbers in Matrix

Arrays Array Matrix
Easy

Maximum Nesting Depth of Parentheses

Strings String Stack
Easy

Check if Two String Arrays are Equivalent

Strings Array String
Easy

Truncate Sentence

Strings Array String
Easy

Check if Array is Sorted and Rotated

Arrays Array
Easy

Sum of Unique Elements

Arrays Array Hash Table
Easy

Maximum Population Year

Arrays Array Counting
Easy

Find Target Indices After Sorting

Searching Array Binary Search Sorting
Easy

Two Furthest Houses With Different Colors

Arrays Array Greedy
Easy

Count Operations to Obtain Zero

Math Math
Easy

Minimum Sum of Four Digit Number

Math Math Greedy Sorting
Easy

Largest 3-Same-Digit Number

Strings String
Easy

Count Asterisks

Strings String
Easy

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