LeetCode 237. Delete Node in a Linked List

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 that node.

Supposed the linked list is 1 -> 2 -> 3 -> 4 and you are given the third node with value 3, the linked list should become 1 -> 2 -> 4 after calling your function.

分析:因为删除结点本来的步骤是找到当前结点的前一个结点,然后修改前一个结点的 next 指针指向。现在只知道当前要删除的结点,而不知道要删除结点的前一个结点,所以可以通过修改当前要删除结点的值,然后将当前结点指针指向 next 的 next (也就是变成了把后一个结点的值赋给当前结点,然后删除要删除结点的下一个结点),达到删除结点的目的~

 

❤ 点击这里 -> 订阅《PAT | 蓝桥 | LeetCode学习路径 & 刷题经验》by 柳婼

❤ 点击这里 -> 订阅《从放弃C语言到使用C++刷算法的简明教程》by 柳婼

❤ 点击这里 -> 订阅PAT甲级乙级、蓝桥杯、GPLT天梯赛、LeetCode题解离线版