题解 | #删除链表峰值#

# class ListNode:

# from numpy import negative
#     def __init__(self, x):
#         self.val = x
#         self.next = None
#
# 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
#
class Solution:
    def deleteNodes(self , head: ListNode) -> ListNode:
        if not head or not head.next:
            return head
        # write code here
        curr=head
        next=head.next
        nextN=next.next
        while nextN :
            if next.val>curr.val and next.val>nextN.val:
                curr.next=nextN
                next=nextN
                nextN=nextN.next
            else:
                curr=next
                next=nextN
                nextN=nextN.next
        return head