摘要: ``` import java.util.ArrayList; import java.util.List; /** * Source : https://oj.leetcode.com/problems/permutation-sequence/ * * * The set [1,2,3,…,n] contains a total of n! unique permutations. ... 阅读全文
posted @ 2017-09-26 07:54 lacker 阅读(140) 评论(0) 推荐(0) 编辑