Problem: Given a linked list, remove the nth node from the end of list and return its head. For example, Given linked list: 1->2->3->4->5, and n = 2. After removing the second node from the end, the linked list becomes 1->2->3->5. Not…

题目 Given a linked list, remove the nth node from the end of list and return its head. For example, Given linked list: 1->2->3->4->5, and n = 2. After removing the second node from the end, the linked list becomes 1->2->3->5. Note: Giv…

1. 4Sum Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target. Note: The solution set must not contain duplicate quadruplets. Fo…

题目:Given a linked list, remove the nth node from the end of list and return its head.For example, Given linked list: 1->2->3->4->5, and n = 2. After removing the second node from the end, the linked list becomes 1->2->3->5. 就是让你删除单链表倒…

题目链接 题目要求: Given a linked list, remove the nth node from the end of list and return its head. For example, Given linked list: ->->->->, and n = . After removing the second node from the end, the linked list becomes ->->->. Note: Given…

我现在在做一个叫<leetbook>的开源书项目,把解题思路都同步更新到github上了,需要的同学可以去看看 这个是书的地址: https://hk029.gitbooks.io/leetbook/ 19. Remove Nth Node From End of List 问题 Given a linked list, remove the nth node from the end of list and return its head. For example, Given linked…

Remove Nth Node From End of List Given a linked list, remove the nth node from the end of list and return its head. For example, Given linked list: 1->2->3->4->5, and n = 2. After removing the second node from the end, the linked list becomes…

一.题目说明 这个题目是19. Remove Nth Node From End of List,不言自明.删除链表倒数第n个元素.难度是Medium! 二.我的解答 链表很熟悉了,直接写代码. 性能如下: Runtime: 8 ms, faster than 35.76% of C++ online submissions for Remove Nth Node From End of List. Memory Usage: 8.8 MB, less than 5.26% of C++ onl…

乘风破浪:LeetCode真题_019_Remove Nth Node From End of List 一.前言 这次总算到了链表的操作了,之后肯定会有排序算法,二叉树,排序树,图等等的操作,现在我们先从链表开始. 二.Remove Nth Node From End of List 2.1 问题 2.2 分析与解决 其实这个问题真的不难,只要知道了链表的长度,然后做一个减法就能找到需要移除的节点了,但是题目上说可以在一次遍历之内就完成运算吗?这就有点难度了,我们可能一时想不开,作为单向链表,…

14. Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. 注:这题竟然连个示例都没有,说明特殊情况并不多,就是要找出所有字符串的最长公共前缀.他应该不会超过所有字符串中最短的那个,可以试着找出最短长度n,然后每个都读取和比较n个,并根据情况不断减小那个n.\ ) { return ""; } int n{int(strs…