Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is. You may not alter the values in the nodes, only nod…

1.题目描述 2.问题分析 这个题本质上还是按照链表翻转的思路来解,只是需要添加一些细节判断. 3.代码 class Solution { public: ListNode* reverseKGroup(ListNode* head, int k) { ){ return head ; } ListNode dummy() ; ListNode* d = &dummy ; ListNode* p = head ; while( p != NULL ){ ListNode* pm = p; ; L…

问题描述:1->2->3->4,假设k=2进行反转,得到2->1->4->3:k=3进行反转,得到3->2->1->4 算法思想:基本操作就是链表反转,将k个元素当作滑动窗口,依次进行反转. public class ReverseNodesInKGroup { public ListNode reverseKGroup(ListNode head, int k) { if (k == 1 || head == null || head.next ==…

题目: Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is. You may not alter the values in the nodes, only…

Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is. You may not alter the values in the nodes, only nod…

Leetcode 25. Reverse Nodes in k-Group 以每组k个结点进行链表反转(链表) 题目描述 已知一个链表,每次对k个节点进行反转,最后返回反转后的链表 测试样例 Input: k = 2, 1->2->3->4->5 Output: 2->1->4->3->5 Input: k = 3, 1->2->3->4->5 Output: 3->2->1->4->5 详细分析 按照题目要求…

题目链接: https://leetcode.com/problems/reverse-nodes-in-k-group/?tab=Description   Problem :将一个有序list划分为k个组,并且每个组的元素逆置   链表操作 :递归算法  每次寻找到该组的尾部,然后进行逆置操作,返回头部,这样每次递归操作之后能够进行下一次的逆置操作. 链表操作画图比较形象!!!! 对于递归算法:找到共同点,找到程序退出点,注意特殊情况 本题中,共同点为每组为k个节点,并且每组进行的操作均为逆…

题目:Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is. You may not alter the values in the nodes, only…

Reverse Nodes in k-Group Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is. You may not alter the valu…

Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the number of nodes is not a multiple of k then left-out nodes in the end should remain as it is. You may not alter the values in the nodes, only nod…