Greedy

Easy | Array, Math, Greedy

Easy | String, Greedy, Counting

Medium | Math, String, Greedy

Medium | Array, Greedy, Matrix

Medium | Array, Dynamic Programming, Greedy, Sorting

Medium | Math, Greedy

Hard | Array, Greedy, Sorting

Medium | Hash Table, Two Pointers, String, Greedy

Hard | Greedy, Depth-First Search, Breadth-First Search, Union-Find, Graph Theory

Medium | Hash Table, String, Greedy, Sorting, Heap (Priority Queue), Counting