Coding Problems

Practice coding problems and improve your algorithm skills

Generate Large Binary Tree

Hard
Tree Random PRNG
🏢Jane Street
0 views✓ Solution Available

Merge Two Binary Trees

Medium
Tree Recursion Binary Tree
🏢Salesforce
0 views✓ Solution Available

Depth of Binary Tree

Medium
Tree String Depth-First Search
🏢LinkedIn
0 views✓ Solution Available

Count Friend Groups

Medium
Graph DFS Connected Components
🏢Twitter
0 views✓ Solution Available

Maximum Coins in Grid

Medium
Matrix Dynamic Programming Algorithm
🏢Zillow
0 views✓ Solution Available

Find the Missing Number

Easy
Array Math Algorithm
🏢Google, Facebook+1
0 views✓ Solution Available

Longest Increasing Subsequence

hard
dynamic programming array binary search sequence
🏢microsoft
0 views

Find the Intersection of Two Arrays

easy
array hash table two pointers
🏢google, facebook+1
0 views

Alternating Singleton Pattern

medium
design patterns singleton pattern object-oriented design multithreading
🏢microsoft
0 views

Longest Distinct Subarray

easy
arrays sliding window hash table two pointers
🏢google
0 views