qq_15600899的博客

只出现一次的数字Given a non-empty array of integers, every element appears twice except for one. Find that single one.给定一个非空整数数组，除了某个元素只出现一次以外，其余每个元素均出现两次。找出那个只出现了一次的元素。Note:Your algorithm should have a l...

Reverse Linked ListReverse a singly linked list.Example:Input: 1->2->3->4->5->NULLOutput: 5->4->3->2->1->NULLFollow up:A linked list can be reversed either iterati...