237. Delete Node in a Linked List

题目描述

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 is1 -> 2 -> 3 -> 4and you are given the third node with value3, the linked list should become1 -> 2 -> 4after calling your function.

解题方法

 public void deleteNode(ListNode node){
        if(node == null || node.next == null){
            return;
        }

        node.val = node.next.val;
        node.next = node.next.next;
    }