Shuati diary.
Segment Tree，BIT，Trie，Union Find，LinkedHashMap
DFS，BFS，topological sort, dfs/bfs connected, dfs/bfs circle, Sliding Window，sweep line
sorting
- Top 100 Liked Questions 218, 10, 32
3 Top Facebook Questions 273, 301
4 Top Google Questions 140, 336, 316, 657
5 Top Interview Questions 44, 269, 212, 340, 308
6 Top LinkedIn Questions 716, 730, 57, 68, 65
7 Top frequency, green and yellow, 533 problems
8 Google all
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