classSolution:defremoveNthFromEnd(self,head,n):# 初始化一个哑节点,它的下一个节点指向链表头节点# 这样做是为了方便处理边界情况,比如删除的是头节点dummy=ListNode(0)dummy.next=head# 初始化快慢指针,初始时都指向哑节点slow=dummyfast=dummy# 快指针先前进n+1步,走到第n+1个节点# 这里加1是为了让快慢...
1ListNode* removeNthFromEnd(ListNode* head,intn) {2ListNode** t1 = &head, *t2 =head;3//t2向后移n个节点4while(n--) t2 = t2->next;5//使t2移到最后一个节点的next,即NULL6//t1指向那个指向待删除节点的指针,即指向待删除节点的上一个节点的next7while(t2 !=NULL) {8t2 = t2->next;9...
/** * Definition for singly-linked list. * public class ListNode { * int val; * ListNode next; * ListNode(int x) { val = x; } * } */classSolution{publicListNoderemoveNthFromEnd(ListNode head,intn){if(head==null||n==0)returnnull; ListNode back=head,front=head,p;for(inti=0;i<...
publicListNoderemoveNthFromEnd(ListNodehead,intn){intlen=0;ListNodeh=head;while(h!=null){h=h.next;len++;}//长度等于 1 ,再删除一个结点就为 null 了if(len==1){returnnull;}intrm_node_index=len-n;//如果删除的是头结点if(rm_node_index==0){returnhead.next;}//找到被删除结点的前一个结...
19. Remove Nth Node From End of List 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. ...
Remove Nth Node From End of List 给定一个链表,删除链表的倒数第n个节点,并且返回链表的头结点。 示例: 给定一个链表: 1->2->3->4->5, 和 n = 2. 当删除了倒数第二个节点后,链表变为 1->2->3->5. 1. 2. 3. 说明: 给定的n保证是有效的。
After removing the second node from the end, the linked list becomes 1->2->3->5. Note: Given n will always be valid. Follow up: Could you do this in one pass? 思路: 这道题让我们移除链表倒数第N个节点,限定n一定是有效的,即n不会大于链表中的元素总数。还有题目要求我们一次遍历解...
19. Remove Nth Node From End of List Given a linked list, remove then-th node from the end of list and return its head. Example: 代码语言:javascript 复制 Given linked list:**1->2->3->4->5**,and**_n_=2**.After removing the second node from the end,the linked list becomes**...
Default Global Packages From File While InstallingIf you have a list of default packages you want installed every time you install a new version, we support that too -- just add the package names, one per line, to the file $NVM_DIR/default-packages. You can add anything npm would accept...
import { writeFile } from 'fs' 存在的问题 最新的几个 Node.js 版本 都没有实现 import 这个关键字,不支持 先来看个 案例 // demo.js import fs from 'fs' 执行代码,node demo.js 然后出现报错 import fs from 'fs' ^^^ SyntaxError: Cannot use import statement outside a module at Modul...