Easy 237题 Delete Node in a Linked List

Question:

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 -> 4after calling your function.

Solution:

为什么才过了5.9%？？？

/** * 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) {        if(null==node)            return;        else        {            node.val=node.next.val;            node.next=node.next.next;        }    }}