题解 | #删除链表峰值#

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 
     * @return ListNode类
     */
    public ListNode deleteNodes (ListNode head) {
        // write code here
        ListNode a = head;
        ListNode b = head.next;
        ListNode c = head.next.next;
        while(c!=null){
            if(b.val>a.val&&b.val>c.val){
                ListNode ne = c;
                b.val = ne.val;
                b.next = ne.next;
                c=c.next;
            }
            else{
                c=c.next;
                b=b.next;
                a=a.next;
            }   
        }
        return head;
    }
}