【LeetCode】237. Delete Node in a Linked List 解题报告 (Java&Python&C++)
- 作者: 负雪明烛
- id: fuxuemingzhu
- 个人博客:http://fuxuemingzhu.cn/
目录
[LeetCode]
题目地址:https://leetcode.com/problems/delete-node-in-a-linked-list/
Total Accepted: 78258 Total Submissions: 179086 Difficulty: Easy
题目描述
Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.
Given linked list – head = [4,5,1,9], which looks like following:
4 -> 5 -> 1 -> 9
Example 1:
Input: head = [4,5,1,9], node = 5
Output: [4,1,9]
Explanation: You are given the second node with value 5, the linked list
should become 4 -> 1 -> 9 after calling your function.
Example 2:
Input: head = [4,5,1,9], node = 1
Output: [4,5,9]
Explanation: You are given the third node with value 1, the linked list
should become 4 -> 5 -> 9 after calling your function.
Note:
- The linked list will have at least two elements.
- All of the nodes’ values will be unique.
- The given node will not be the tail and it will always be a valid node of the linked list.
- Do not return anything from your function.
题目大意
给出了一个节点,这个节点是在一个单链表中的,并且这个节点不是最后一个节点。现在要我们删除这个节点。
解题方法
设置当前节点的值为下一个
拿到这个题时以为要从头找到这个节点前一个节点,然后删除当前节点。这个应该是正常思路。
但是,题目只给出了删除的这个节点,没有给出根节点。所以可以通过这个将当前的节点的数值改成下面的节点的值,然后删除下一个节点的方式。
链表基本操作,记待删除节点为node:
令node.val = node.next.val,node.next = node.next.next即可
Java代码如下:
/**
* Definition for singly-linked list.
* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) { val = x; }
* }
*/
public class Solution {
public void deleteNode(ListNode node) {
node.val=node.next.val;
node.next=node.next.next;
}
}
python代码如下:
# Definition for singly-linked list.
# class ListNode(object):
# def __init__(self, x):
# self.val = x
# self.next = None
class Solution(object):
def deleteNode(self, node):
"""
:type node: ListNode
:rtype: void Do not return anything, modify node in-place instead.
"""
node.val = node.next.val
node.next = node.next.next
C++代码如下:
/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(int x) : val(x), next(NULL) {}
* };
*/
class Solution {
public:
void deleteNode(ListNode* node) {
node->val = node->next->val;
node->next = node->next->next;
}
};
日期
2016/4/30 0:39:40
2018 年 11 月 11 日 —— 剁手节快乐
2019 年 9 月 27 日 —— 昨天面快手,竟然是纯刷题
【LeetCode】237. Delete Node in a Linked List 解题报告 (Java&Python&C++)的更多相关文章
- LeetCode 237 Delete Node in a Linked List 解题报告
题目要求 Write a function to delete a node (except the tail) in a singly linked list, given only access ...
- [LeetCode] 237. Delete Node in a Linked List 解题思路
Write a function to delete a node (except the tail) in a singly linked list, given only access to th ...
- LeetCode 237. Delete Node in a Linked List (在链表中删除一个点)
Write a function to delete a node (except the tail) in a singly linked list, given only access to th ...
- [LeetCode] 237. Delete Node in a Linked List 删除链表的节点
Write a function to delete a node (except the tail) in a singly linked list, given only access to th ...
- (easy)LeetCode 237.Delete Node in a Linked List
Write a function to delete a node (except the tail) in a singly linked list, given only access to th ...
- leetcode 237 Delete Node in a Linked List python
题目: Write a function to delete a node (except the tail) in a singly linked list, given only access t ...
- 17.leetcode 237. Delete Node in a Linked List
Write a function to delete a node (except the tail) in a singly linked list, given only access to th ...
- [Leetcode]237. Delete Node in a Linked List -David_Lin
Write a function to delete a node (except the tail) in a singly linked list, given only access to th ...
- LeetCode 237. Delete Node in a Linked List 删除链表结点(只给定要删除的结点) C++/Java
Write a function to delete a node (except the tail) in a singly linked list, given only access to th ...
随机推荐
- MYSQL5.8----M3
333333333333333333333333333 mysql> DESC user; +----------+---------------------+------+-----+---- ...
- java 按内容拆分文件
文件内容为: BC************* **************** *************** BC************* **************** *********** ...
- 在Linux下搭建nRF51822的开发烧写环境(makefile版)
http://www.qingpingshan.com/m/view.php?aid=394836
- 学习java的第八天
一.今日收获 1.学习完全学习手册上2.3转义字符与2.4运算符两节 二.今日难题 1.没有什么难理解的问题 三.明日目标 1.哔哩哔哩教学视频 2.Java学习手册
- 学习java的第二十六天
一.今日收获 1.java完全学习手册第三章算法的3.2排序,比较了跟c语言排序上的不同 2.观看哔哩哔哩上的教学视频 二.今日问题 1.快速排序法的运行调试多次 2.哔哩哔哩教学视频的一些术语不太理 ...
- keybd_event模拟键盘按键,mouse_event怎么用
从 模仿UP主,用Python实现一个弹幕控制的直播间! - 蛮三刀酱 - 博客园 (cnblogs.com) 知道了 PyAutoGUI: * Moving the mouse and clicki ...
- day09 文件属性
day09 文件属性 昨日回顾 yum底层原理: 第一步:执行yum install nginx安装命令 第二步:yum去/etc/yum.repos.d这个目录中 第三步:根据/etc/yum/re ...
- CAS你知道吗
1.比较并交换 CASDemo /** * CAS => compareAndSet * 比较并交换 */ public class CASDemo { public static void m ...
- Mysql的行级锁
我们首先需要知道的一个大前提是:mysql的锁是由具体的存储引擎实现的.所以像Mysql的默认引擎MyISAM和第三方插件引擎 InnoDB的锁实现机制是有区别的. Mysql有三种级别的锁定:表级锁 ...
- SVN终端演练-版本回退
1. 版本回退概念以及原因? 概念: 是指将代码(本地代码或者服务器代码), 回退到之前记录的某一特定版本 原因: 如果代码做错了, 想返回之前某个状态重做;2. 修改了,但未提交的情况下 ...