题目连接
https://leetcode.com/problems/delete-node-in-a-linked-list/
Delete Node in a Linked List
Description
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.
/**
* 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) {
if (!node) return;
ListNode *x = node->next;
node->val = x->val;
node->next = x->next;
delete x;
}
};