解法二(Java) /*** Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * }*/classSolution {publicListNode reverseList(ListNode head) {if(head ==null|| head.next ==null)returnhead;//处理最小输入的情况,即空链表...
Output: 5->4->3->2->1->NULL /*** Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * }*/classSolution {publicListNode reverseList(ListNode head) { ListNode curr=head; ListNode preNode=null;//反转后前节点...
Program to reverse a linked list in java publicclassLinkedList{//head object of class node will point to the//head of the linked listNode head;//class node to create a node with data and//next node (pointing to node)publicstaticclassNode{intdata;Node next;Node(intdata,Node next){this.d...
Hint: A linked list can be reversed either iteratively or recursively. Could you implement both? 既然问了能否iteratively or recursively, 那就both把. iterative 解法: 总结就是得到下一个节点,更改当前节点指向,将指针往下移动,直到过完整个linkedlist. /** * Definition for singly-linked list. * public ...
def reverseList(self, head): """ :type head: ListNode :rtype: ListNode """ p1 = None p2 = head while(p2 is not None): tmp = p2.next p2.next = p1 p1 = p2 p2 = tmp return p1 Reverse Linked List II Reverse a linked list from position m to n. Do it in-place and in on...
How to reverse a Singly Linked List in Java https://www.youtube.com/playlist?list=PL6Zs6LgrJj3tDXv8a_elC6eT_4R5gfX4d 讲得比国内的老师清楚
C++ program to reverse a single linked list#include<bits/stdc++.h> using namespace std; class node{ public: int data; // data field node *next; }; node* reverse(node* head){ node *next=NULL,*cur=head,*prev=NULL; //initialize the pointers while(cur!=NULL){//loop till the end ...
def reverseList(self, head): """ :type head: ListNode :rtype: ListNode """ dummy = ListNode(None) while head: # 终止条件是head=Null nextnode = head.next # nextnode是head后面的节点 head.next = dummy # dummy.next是Null,所以这样head.next就成为了Null ...
Reverse Linked List II 题目大意 翻转指定位置的链表 解题思路 将中间的执行翻转,再将前后接上 代码 迭代 代码语言:javascript 代码运行次数:0 运行 AI代码解释 classSolution(object):# 迭代 defreverseBetween(self,head,m,n):""":type head:ListNode:type m:int:type n:int:rtype:ListNode""" ...
Here is a nice diagram that explains thealgorithm to reverse a linked listwithout recursion in Java: You can see that links are reversed in each step using the pointer's previous and next. This is also known as the iterative algorithm to reverse the linked list in Java. For the recursive...