题解 | #删除链表的节点#

import java.util.*;

/*
 * public class ListNode {
 *   int val;
 *   ListNode next = null;
 *   public ListNode(int val) {
 *     this.val = val;
 *   }
 * }
 */

public class Solution {
    /**
     * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
     *
     * 
     * @param head ListNode类 
     * @param val int整型 
     * @return ListNode类
     */
    public ListNode deleteNode (ListNode head, int val) {
        // write code here
        ListNode p = head;
        if(head.next == null ||head.val == val){
            return head.next;
        }
       
        for(;head != null;){
            if(head.next.val == val){
                if(head.next.next!=null){
                    head.next = head.next.next;
                }else{
                    head.next = null;
                }
                break;
            }
            head = head.next;
        }
        return p;
    }
}