237. Delete Node in a Linked List

Posted 2020-07-31 whl-hl

1. 问题描述

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.

Tags: Linked List
Similar Problems: (E) Remove Linked List Elements
/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(int x) : val(x), next(NULL) {}
* };
*/

2. 解题思路

3. 代码

 1 class Solution {
 2 public:
 3     void deleteNode(ListNode* node) {
 4         if (NULL == node)
 5         {
 6             return;
 7         }
 8         ListNode *pt = node;
 9         node->val = node->next->val;
10         node = node->next;
11         pt->next = node->next;
12 
13     }
14 };

4. 反思