摘要: 题目: The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, We get the following seq 阅读全文
posted @ 2016-09-13 15:09 PolarBearInterest 阅读(174) 评论(0) 推荐(0) 编辑