An algorithm is a sequence of unambiguous steps to do a task. The challenges below require you to come up with algorithms to solve the problems.

Array
String
Dictionary
Dynamic Programming
Recursion
Tree

Fibonacci Number
Pascal's Triangle
Climbing Stairs
Min Cost Climbing Stairs
House Robber
Divisor Game
Unique Paths
Minimum Path Sum
Coin Change
Longest Increasing Subsequence
Decode Ways
2 Keys Keyboard