1642. Furthest Building You Can Reach

Array Greedy Binary Search Heap

494. Target Sum

Array Dynamic Programming Backtracking

198. House Robber

Array Dynamic Programming

746. Min Cost Climbing Stairs

Array Dynamic Programming

286. Walls And Gates

Array Breadth-First Search Matrix

Number Of Islands

Array Depth-First Search Breadth-First Search Matrix Union Find

1. Two Sum

Array HashTable

CTCI 1.6 String Compression

Count the chars using loop

Array String