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...
Reverse a singly linked list. click to show more hints. Hint: A linked list can be reversed either iteratively or recursively. Could you implement both? 递归法 复杂度 时间O(N) 空间 O(N) 递归栈空间 思路 基本递归 代码 public class Solution { ListNode newHead; public ListNode reverseList(Lis...
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
206--Reverse A Singly Linked List package LinedList; public class ReverseASinglyLinkedList { //解法一:迭代。 public ListNode reverseList(ListNode head) { ListNode previous = null; ListNode current = head; while (current != null) { ListNode next = current.next; current.next = previous; previo...
Reverse a singly linked list. 反转链表,我这里是采用头插法来实现反转链表。 代码如下: /*class ListNode { int val; ListNode next; ListNode(int x) { val = x; } } */ public class Solution { public ListNode reverseList(ListNode head) ...
206. Reverse Linked List Reverse a singly linked list. 反转一个链表。 思路: 采用头插法,将原来链表重新插一次返回即可。 代码如下: /** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {} ...
Reverse Linked List Reverse a singly linked list. Note Create tail = null; Head loop through the list: Store head.next, head points to tail, tail becomes head, head goes to stored head.next; Return tail. Solution public class Solution { ...
Since using existing Java classes is now allowed on Programming Job interviews, you need to create your own to write code. For this example, I have created our own singly linked list class. Similar tojava.util.LinkedListalso contains anested static classNode, which represents a node in the ...
leetcode 206[easy]-Reverse Linked List 难度:easy Reverse a singly linked list 思路:方法1:把链表中每个节点的val转入list,然后再从list中调出,栈的思维。 方法2:经典的链表反转方法,但是自己也不是很懂,贴在这儿,希望回来看的时候可以弄懂。... ...
Java /** * Definition for singly-linked list. * public class ListNode{* int val; * ListNode next; * ListNode(int x){val = x;}*}*/publicclassSolution{publicListNodereverseList(ListNodehead){ListNodeprev=null;ListNodecurr=head;while(curr!=null){ListNodetemp=curr.next;curr.next=prev;prev=cu...