题目
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
题目要求删除指定结点，但是给定参数只有目标结点。
转移思维，改成拷贝目标结点后结点的值，然后删除目标结点的后一结点。
AC代码
/**
* 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 == NULL)
return;
else if(node->next != NULL){
//只给出一个要删除的结点，转移思维，改成拷贝目标结点后结点的值，然后删除目标结点的后一结点
node->val = node->next->val;
node->next = node->next->next;
}
else{
return;
}
}
};