摘要：
Sort a linked list using insertion sort.思路：使用插入排序来对链表进行排序。只要注意链表的边界问题，其实关键就是交换链表的值，对链表指针是没有什么影响的。接下来说下具体步骤：1.判断head或者head->next是否为空；2.循环遍历，初始条件pCur=he... 阅读全文
摘要：
Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example,[1,1,2]have the following unique perm... 阅读全文
摘要：
Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arrangement is not possibl... 阅读全文
摘要：
Given two binary strings, return their sum (also a binary string).For example,a ="11"b ="1"Return"100".思路：一个二进制字符串相加；首先从字符串的末尾开始，先二进制字符转化为数字，然后再相加；然后将... 阅读全文