csyhhu/LeetCodePratice

My LeetCode Pratice

Category

String

• 49
• 179

Valid Parenthesis String

• 22
• 216
• *678

Tree

• 230

Dynamic Programming

• 338
• 1043
• 1130: dfs + recursive
• 300
• 139: dfs + recording
• 322
• 5: Longest Palindromic Substring
• 42
• 474
• 1143: Longest Common Subsequence

Array

• 442
• 969
• 238
• 78: Combination, Permutation by DFS
• 77: Combination
• 46: Permutation
• 17: Permutation by DFS
• 287
• 79: DFS
• 55: Greedy
• 54
• 15
• 1109: Difference
• 41: First Missing Positive

Interval

• 218

DFS

• 329
• 212: Trie
• *39: Combination

BFS

• 721

Binary Search

• 1011
• 287
• 215
• 378
• 162
• 34
• 33
• 786
• 315

Stack

• *78
• 227
• 150

Linked List

• 287

Heap

• 215
• 347

Math

• 62

Two Pointers

• 11
• 75
• 904
• 42
• 76

Backtracking

• 131: dfs

Graph

• 207: dfs, bfs

Sorting

• 347
• 692

Topological Sorting

• 210

Prefix Sum

• 1664
• 304
• 1248

Hash Table

• 128

Special Data Structure

• 239