littledy

摘要： Problem : Given a linked list, rotate the list to the right by k places, where k is non negative. Example 1: Example 2: 思路 ： 首先算出链表的长度（因为平移的时候以长度为周期重复 阅读全文

摘要： Problem : The set contains a total of n! unique permutations. By listing and labeling all of the permutations in order, we get the following sequence 阅读全文