k-Group

Reverse Nodes in k-Group

defreverseKGroup(self,head,k):""":typehead:ListNode:typek:int:rtype:ListNode"""ifnotheadork==1:returnheadres=headforiinrange(k-1):ifnotres:returnheadres=res.nextDummy=ListNode(-1)Dummy.next=headpre=Du
poteman·2024-02-14 09:01

Reverse Nodes in k-Group

文章作者：Tyan博客：noahsnail.com|CSDN|1.DescriptionReverseNodesink-Group2.SolutionVersion1/***Definitionforsingly-linkedlist.*structListNode{*intval;*ListNode*next;*ListNode(intx):val(x),next(NULL){}*};*/cla
SnailTyan·2023-12-18 20:58

Lintcode450 Reverse Nodes in k-Group solution 题解

【题目描述】Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesintheendshouldremainasitis.Youmaynotalterthevaluesinthenodes,onl
程风破浪会有时·2023-12-16 21:37

Reverse Nodes in k-Group

ProblemGiventheheadofalinkedlist,reversethenodesofthelistkatatime,andreturnthemodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft
kotic·2023-12-14 13:19

Leetcode-025-Reverse Nodes in k-Group

反转链表的题目就是注意细节了，不要不小心对空指针进行操作，注意链表各个结点的操作顺序。在纸上画一遍直接模拟就行了。这题我用递归完成的，为了不每次都计算一遍链表长度以判断是否需要反转，我另写了一个函数，把当前链表长度作为参数输入，以避免递归过程中的重复计算。/***Definitionforsingly-linkedlist.*structListNode{*intval;*ListNode*nex
单调不减·2023-11-21 21:50

K 个一组翻转链表（Reverse Nodes in k-Group）

和24题差不多，用一个指针记录前一个节点，需要特判，若count结束后并不等于k则翻转回来classSolution{public:ListNode*reverseKGroup(ListNode*head,intk){ListNode*newHead=newListNode(0);ListNode*relativeHead=newHead;ListNode*tail=newHead;ListNod
Stillsings·2023-11-03 15:23

Reverse Nodes in k-Group

Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesinth
咿呀咿呀呦__·2023-10-01 09:05

LeetCode-025-Reverse Nodes in k-Group

ProblemGivenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outno
Hanielxx·2023-09-30 21:05

【leetcode刷题笔记】025.Reverse Nodes in k-Group

日期：20180915题目描述：Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenl
常恒毅·2023-09-03 01:24

Reverse Nodes in k-Group

DescriptionGivenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-o
weego·2023-08-23 13:06

025 Reverse Nodes in k-Group

Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesinth
烟雨醉尘缘·2023-04-09 22:07

032-Reverse Nodes in k-Group

描述在一个单链表中，把单链表中的节点以k个节点为一组进行逆转。如果链表的节点个数不是k的倍数，则剩下的节点以原来的方式链接。不可以改变节点的值，只能改变节点。例如，对于链表1->2->3->4->5：k=2，返回：2->1->4->3->5k=3，返回：3->2->1->4->5分析1）从原始数组中取出k个节点；2）第一步中获取到k个节点则逆置，逆置后的链表链接到结果链表中；不足k个节点，则将原始
Woodlouse·2023-03-19 06:26

LeetCode #25 Reverse Nodes in k-Group K 个一组翻转链表

25ReverseNodesink-GroupK个一组翻转链表Description:Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberof
air_melt·2021-06-19 18:27

Reverse Nodes in k-Group

昨天写的递归有点傻，嗯，没注意到k值，改了一下，代码如下：#Definitionforsingly-linkedlist.#classListNode(object):#def__init__(self,x):#self.val=x#self.next=NoneclassSolution(object):defreverseKGroup(self,head,k):""":typehead:List
April63·2021-05-16 13:22

Reverse Nodes in k-Group

Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesinth
DrunkPian0·2021-05-11 22:15

Reverse Nodes in k-Group

/***Definitionforsingly-linkedlist.*publicclassListNode{*intval;*ListNodenext;*ListNode(){}*ListNode(intval){this.val=val;}*ListNode(intval,ListNodenext){this.val=val;this.next=next;}*}*/classSolution
zhfang·2020-12-24 10:24

Reverse Nodes in k-Group

leetcode25/***Definitionforsingly-linkedlist.*structListNode{*intval;*ListNode*next;*ListNode(intx):val(x),next(NULL){}*};*/classSolution{public:voidreverseSub(ListNode*head,ListNode**new_head,ListNod
圣骐·2020-09-13 23:58

Reverse Nodes in k-Group

[LeetCode]025.ReverseNodesink-Group(Hard)(C++/Java)，有需要的朋友可以参考下。索引：[LeetCode]Leetcode题解索引(C++/Java/Python/Sql)Github:https://github.com/illuz/leetcode025.ReverseNodesink-Group(Hard)链接：题目：https://oj.le
weixin_33834628·2020-08-25 05:34

Reverse Nodes in k-Group

题目25.ReverseNodesink-GroupGivenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesintheendshouldremainasitis.Youmaynotalterthe
evil_ice·2020-08-22 11:35

25.leetcode 25 Reverse Nodes in k-Group

本题是一个hard链表翻转问题，关键点如下：1.子链表翻转，需要有一个头节点指引返回结果的head2.题目有空间要求，合适的做法是先计数再做子链表翻转代码如下：#Definitionforsingly-linkedlist.#classListNode(object):#def__init__(self,val=0,next=None):#self.val=val#self.next=nextcl
haidixipan·2020-08-22 01:39

leetcode Reverse Nodes in k-Group

递归一下/***Definitionforsingly-linkedlist.*structListNode{*intval;*ListNode*next;*ListNode(intx):val(x),next(NULL){}*};*/classSolution{public:ListNode*reverseKGroup(ListNode*head,intk){if(head==NULL||hea
weber-xie·2020-08-21 03:30

LeetCode 25 Reverse Nodes in k-Group K个一组反转节点

题目：Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesintheendshouldremainasitis.Youmaynotalterthevaluesinthenodes,onlyno
大三狗·2020-08-15 16:46

Reverse Nodes in k-Group 以组的形式反转节点

文章目录25.以组的形式反转节点25.ReverseNodesink-Group尾插法头插法25.以组的形式反转节点25.ReverseNodesink-GroupGivenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequalt
goasleep·2020-08-04 16:19

LeetCode 25 Reverse Nodes in k-Group

Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesinth
Vas_Sago·2020-07-29 21:29

LeetCode25 Reverse Nodes in k-Group

题目：Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesi
zhangjun62·2020-07-15 12:25

LeetCode 25.k个一组翻转链表(Reverse Nodes in k-Group)

LeetCode.jpgk个一组翻转链表给出一个链表，每k个节点一组进行翻转，并返回翻转后的链表。k是一个正整数，它的值小于或等于链表的长度。如果节点总数不是k的整数倍，那么将最后剩余节点保持原有顺序。示例:给定这个链表：1->2->3->4->5当k=2时，应当返回:2->1->4->3->5当k=3时，应当返回:3->2->1->4->5说明:你的算法只能使用常数的额外空间。你不能只是单纯的改
墨1024·2020-07-13 06:37

LeetCode - Reverse Nodes in k-Group

/***题目**将给出的链表中的节点每k个一组翻转，返回翻转后的链表*如果链表中的节点数不是k的倍数，将最后剩下的节点保持原样*你不能更改节点中的值，只能更改节点本身。*只允许使用常数级的空间*例如：*给定的链表是1->2->3->4->5**对于k=2,你应该返回2->1->4->3->5**对于k=3,y你应该返回3->2->1->4->5***Givenalinkedlist,reverse
toward_south·2020-07-12 01:41

Reverse Nodes in k-Group 反转k组数组

ReverseNodesink-Group题目递归python代码题目Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisn
turbo624·2020-07-08 22:14

Reverse Nodes in k-Group

题目：https://leetcode.com/problems/reverse-nodes-in-k-group/#/descriptionGivenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengtho
weixin_kite·2020-07-08 18:54

Reverse Nodes in k-Group

题目就是每k个节点进行一次反转，然后不够的话，就不转了题解比如当前是1->2->3->4->5k=2,然后我递归找3->4->5然后递归5发现5不够k=2，然后直接返回然后我反转3->45反转结果为4->3->5然后我再返回反转1->24->3->5然后结果就是2->1->4->3->5了/***Definitionforsingly-linkedlist.*structListNode{*int
weixin_30872337·2020-07-08 14:42

Reverse Nodes in k-Group

Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesinth
ReignsDu·2020-07-08 04:35

Leetcode 25 K个一组翻转链表 Reverse Nodes in k-Group

给你一个链表，每k个节点一组进行翻转，请你返回翻转后的链表。k是一个正整数，它的值小于或等于链表的长度。如果节点总数不是k的整数倍，那么请将最后剩余的节点保持原有顺序。示例:给定这个链表：1->2->3->4->5当k=2时，应当返回:2->1->4->3->5当k=3时，应当返回:3->2->1->4->5说明:你的算法只能使用常数的额外空间。你不能只是单纯的改变节点内部的值，而是需要实际的进行
Iredescence·2020-07-08 00:37

Reverse Nodes in k-Group - Array

题目链接：25.ReverseNodesink-GroupGivenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamul
wowpH·2020-07-07 18:34

Reverse Nodes in k-Group (Hard) (C++/Java)

索引：[LeetCode]Leetcode题解索引(C++/Java/Python/Sql)Github:https://github.com/illuz/leetcode025.ReverseNodesink-Group(Hard)链接：题目：https://oj.leetcode.com/problems/reverse-nodes-in-k-group/代码(github)：https://
hcbbt·2020-07-07 09:23

Reverse Nodes in k-Group

Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesinth
ghscarecrow·2020-07-07 08:00

leetcode题解：第25题Reverse Nodes in k-Group

题目ReverseNodesink-GroupGivenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleo
chenf99·2020-07-07 05:11

Reverse Nodes in k-Group

题意：链表翻转，每k个翻一次，最后不足k个的不翻题解：没啥难点，就是要对逻辑有一点要求；当然你也可以先存到数组里，然后用数学方法计算下标进行swap，但是这脱离了这道题的本意，代码不放了1classSolution{2public:3voidreverse(vector&lists){4for(autoi=0;inext,*tmp;7while(nex!=ed){8tmp=nex->next;9n
acuiyi4402·2020-07-07 02:15

LeetCode题解-25-Reverse Nodes in k-Group

原题简介该题共有2种解法，一种迭代，一种递归。迭代法解题思路每一次取K个节点作为子链表，将其反转，然后将反转后的子链表添加到新的链表中。图解代码publicclassSolution25{publicListNodereverseKGroup(ListNodehead,intk){if(head==null||head.next==null||k0){//reversecurrentk-group
WangT443·2020-07-07 01:43

Reverse Nodes in k-Group

题意如例子所示，给定一个链表，以k个元素作为一组，将它们倒置，若剩余不足k个，保持不变。Giventhislinkedlist:1->2->3->4->5Fork=2,youshouldreturn:2->1->4->3->5Fork=3,youshouldreturn:3->2->1->4->5要求：额外的空间是常数级并且不可改变结点元素题解因为不可更改结点元素，只能更改结点自身的位置，就，就不
SYSUSDCSGJH·2020-07-07 00:57

Reverse Nodes in k-Group

题意：把原始链表k个k个的反转，如果最后剩余的不到k个结点，那么保持不变。例子：给定链表:1->2->3->4->5如果k=2,返回链表:2->1->4->3->5如果k=3,返回链表:3->2->1->4->5分析：前两天十大上有师兄分享17年算法岗面经时提到了本题，因此在做本题的时候也格外认真。晚上洗澡的时候理了一下思路，然后手写代码bug-free，还是很开心的。题目本身是几道题的综合，因此
北邮张博·2020-07-06 22:33

Reverse Nodes in k-Group

Leetcode题解-25.ReverseNodesink-GroupGivenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisn
hzw2945·2020-07-06 16:49

K 个一组翻转链表（Reverse Nodes in k-Group）java_leetcode25

K个一组翻转链表（ReverseNodesink-Group）java_leetcode25版权©：https://blog.csdn.net/zhangjingao/article/details/96966465题干给你一个链表，每k个节点一组进行翻转，请你返回翻转后的链表。k是一个正整数，它的值小于或等于链表的长度。如果节点总数不是k的整数倍，那么请将最后剩余的节点保持原有顺序。示例:给定这
下雨了_简·2020-06-30 13:13

leetcode：Reverse Nodes in k-Group（以k为循环节反转链表）【面试算法题】

题目：Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesintheendshouldremainasitis.Youmaynotalterthevaluesinthenodes,onlyno
Havenoidea·2020-06-30 13:24

LeetCode Reverse Nodes in k-Group(单链表连续分段反转)

题意：给出一个单链表及反转元素的个数，求反转后的单链表思路：首先确定链表总结点数，根据反转元素的个数，可以知道要反转多少次。第一次反转的尾为新的单链表的头，而后序反转后的头变成前一次反转后发尾部元素的后继结点具体代码如下：publicclassSolution{publicListNodereverseKGroup(ListNodehead,intk){if(null==head||0==k||1
kgduu·2020-06-29 21:35

leetcode25——Reverse Nodes in k-Group

题目大意：给出一个链表，将这个链表以k个结点为一组进行翻转，不够k个的部分就保持原样不进行翻转。（比如12345如果k为3就变成32145）分析：链表的考察。leetcode24是这道题的特殊情况，即k=2的时候。类似于这种反转链表的题都是一个思路：思路如下：下图是原始的单链表：为了反转这个单链表，我们先让头结点的next域指向结点2，再让结点1的next域指向结点3，最后将结点2的next域指向
tzyshiwolaogongya·2020-06-26 21:16

Reverse Nodes in k-Group(K组翻转链表)

http://www.lintcode.com/en/problem/reverse-nodes-in-k-group/?rand=true/***Definitionforsingly-linkedlist.*publicclassListNode{*intval;*ListNodenext;*ListNode(intx){val=x;}*}*/publicclassSolution{/**@p
天街孤独·2020-06-23 15:09

Reverse Nodes in k-Group (H)

ReverseNodesink-Group(H)题目Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultip
墨云黑·2020-06-22 03:00

Reverse Nodes in k-Group

Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesinth
Jeanz·2020-04-13 00:00

Reverse Nodes in k-Group

题目Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesin
Al73r·2020-03-09 02:58

LC-25 Reverse Nodes in k-Group

Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.kisapositiveintegerandislessthanorequaltothelengthofthelinkedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesinth
Zihowe·2020-02-20 00:11
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