【LeetCode】60. Permutation Sequence
the following sequence (ie, for n = 3): "123" "132" ...
原文：[LeetCode] 60. Permutation Sequence 序列排序
The set , , ,...,n contains a total ofn unique permutations. By listing and labeling all of the permutations in order, we get the following sequence forn : Givennandk, return thekthpermutation sequen ...
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