36. 有效的数独
Medium | Array, Hash Table, Matrix
Medium | Array, Hash Table, Matrix
Hard | Array, Hash Table, Backtracking, Matrix
Medium | Math
Medium | String, Dynamic Programming
Hard | Hash Table, String, Sliding Window
Medium | String, Stack
Medium | Array, Two Pointers, String, Trie, String Matching
Medium | Array, Depth-First Search, Breadth-First Search, Matrix
Medium | Array, Dynamic Programming
Hard | String, Dynamic Programming
Medium | Array, Math, Probability and Statistics
Medium | Breadth-First Search, Graph Theory
Medium | Array, Dynamic Programming, Matrix
Medium | String, Dynamic Programming
Hard | String, Dynamic Programming
Medium | Array, Dynamic Programming, Breadth-First Search, Matrix
Medium | Array, Hash Table, String, Sorting
Easy | Math
Hard | Depth-First Search, Graph Theory, Biconnected Component
Hard | Array, Dynamic Programming