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基于排列、图的DFS (Problems (Next Permutation, Next Permutation II, Permutation…
基于排列、图的DFS
Problems
Next Permutation
Next Permutation II
Permutation Index
Count of Smaller Number before itself
Segment Tree Build
Segment Tree Build
Segment Tree Query II
String Permutation II
N-Queens
Next Closest Time
Permutation Index II
Letter Combinations of a Phone Number
Word Pattern II
Word Ladder II
Word Search II
求下一个排列
全排列问题
基于图的深度优先搜索
Graph-based Depth-first Search