Find the nth to last element of a singly linked list. The minimum number of nodes in list is n. Example Given a List  3->2->1->5->null and n = 2, return node  whose value is 1. 分析: 要找到nth to last element,我们需要两个指针,第一个指针先走n步,然后两个指针同时走,知道第一个指针为nu…

Find the nth to last element of a singly linked list. The minimum number of nodes in list is n. Example Given a List ->->->->, . Runner Technique: 两个指针都从Dummy node出发,结束条件是runner.next!=null public class Solution { /** * @param head: The first n…

题目: 链表倒数第n个节点 找到单链表倒数第n个节点,保证链表中节点的最少数量为n. 样例 给出链表 3->2->1->5->null和n = 2,返回倒数第二个节点的值1. 解题: 某年408计算机考研题目 Java程序: /** * Definition for ListNode. * public class ListNode { * int val; * ListNode next; * ListNode(int val) { * this.val = val; * thi…

Description Find the nth to last element of a singly linked list. The minimum number of nodes in list is n. Example Given a List  3->2->1->5->null and n = 2, return node  whose value is 1. 解题:给一个链表,求倒数第n个结点的值.先贴一下自己的代码,思路比较简单,遍历两遍,第一遍算结点总数,推出所…

Yet Another Source Code for LintCode Current Status : 232AC / 289ALL in Language C++, Up to date (2016-02-10) For more problems and solutions, you can see my LintCode repository. I'll keep updating for full summary and better solutions. See cnblogs t…

----------------------------------- 最开始的想法是先计算出链表的长度length,然后再从头走 length-n 步即是需要的位置了. AC代码: /** * Definition for ListNode. * public class ListNode { * int val; * ListNode next; * ListNode(int val) { * this.val = val; * this.next = null; * } * } */ pu…

找到单链表倒数第n个节点,保证链表中节点的最少数量为n. 样例 给出链表 3->2->1->5->null和n = 2,返回倒数第二个节点的值1. /** * Definition of ListNode * class ListNode { * public: * int val; * ListNode *next; * ListNode(int val) { * this->val = val; * this->next = NULL; * } * } */ cla…

1.Remove Linked List Elements package linkedlist; /* * Question: Remove all elements from a linked list of integers that have value val. */ public class RemoveLinkedListElements { /** * @param head a ListNode * @param val an integer * @return a ListN…

链表倒数第n个节点 找到单链表倒数第n个节点,保证链表中节点的最少数量为n. 思路:设置两个指针first,second指向head,first指针先向前走n,然后两个指针一起走,first指针走到末尾,second走到倒数第n个指针! 代码 /** * Definition of ListNode * class ListNode { * public: * int val; * ListNode *next; * ListNode(int val) { * this->val = val;…

Java Algorithm Problems 程序员的一天 从开始这个Github已经有将近两年时间, 很高兴这个repo可以帮到有需要的人. 我一直认为, 知识本身是无价的, 因此每逢闲暇, 我就会来维护这个repo, 给刷题的朋友们一些我的想法和见解. 下面来简单介绍一下这个repo: README.md: 所有所做过的题目 ReviewPage.md: 所有题目的总结和归纳(不断完善中) KnowledgeHash2.md: 对所做过的知识点的一些笔记 SystemDesign.md:…

BST中第K小的元素 中文English 给一棵二叉搜索树,写一个 KthSmallest 函数来找到其中第 K 小的元素. Example 样例 1: 输入:{1,#,2},2 输出:2 解释: 1 \ 2 第二小的元素是2. 样例 2: 输入:{2,1,3},1 输出:1 解释: 2 / \ 1 3 第一小的元素是1. Challenge 如果这棵 BST 经常会被修改(插入/删除操作)并且你需要很快速的找到第 K 小的元素呢?你会如何优化这个 KthSmallest 函数? Notice…

题目描述: 我的代码: /** * Definition for ListNode. * public class ListNode { * int val; * ListNode next; * ListNode(int val) { * this.val = val; * this.next = null; * } * } */ public class Solution { /* * @param head: The first node of linked list. * @param…

原题网址:https://www.lintcode.com/problem/nth-to-last-node-in-list/description 描述 找到单链表倒数第n个节点,保证链表中节点的最少数量为n. 您在真实的面试中是否遇到过这个题?  是 样例 给出链表 3->2->1->5->null和n = 2,返回倒数第二个节点的值1. 标签 链表 Cracking The Coding Interview   思路:首先应该清楚,若链表一共有t个结点,则正数第n个结点即倒数…

找到单链表倒数第n个节点,保证链表中节点的最少数量为n. 样例 给出链表 3->2->1->5->null和n = 2,返回倒数第二个节点的值1. 分析:设两个指针 p1和p2,p1遍历到n-1的位置,p2从头开始遍历 当p1到链表尾部的时候,p2刚好到倒数n的位置 注意鲁棒性的考虑 /** * Definition of ListNode * class ListNode { * public: * int val; * ListNode *next; * ListNode(in…

babel.min.js!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.Babel=t():e.Babel=t…

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: Given…

题目简述: 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:…

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: Gi…

问题: 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. 官方难度: Ea…

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. 思路: 最基本的思路肯定…

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:Given n…

Swap Nodes in Pairs Given a linked list, swap every two adjacent nodes and return its head. For example, Given 1->2->3->4, you should return the list as 2->1->4->3. Your algorithm should use only constant space. You may not modify the va…

1 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:Gi…

Remove Nth Node From End of List Total Accepted: 46720 Total Submissions: 168596My Submissions Question Solution  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,…

Given a linked list, remove the nth node from the end of list and return its head. Notice The minimum number of nodes in list is n. Example Given linked list: 1->2->3->4->5->null, and n = 2. After removing the second node from the end, the…

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: Given…

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:Given n…

题目描述: 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:…

Question 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. Sol…

Total Accepted: 84303 Total Submissions: 302714 Difficulty: Easy 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 t…