题解 | 删除链表峰值

# class ListNode:
#     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
        cur = head
        Next = head.next
        nextNext = head.next.next
        while nextNext:
            if Next.val > cur.val and Next.val > nextNext.val:
                cur.next = nextNext
                Next = nextNext
                nextNext = nextNext.next
            else:
                cur = Next
                Next = nextNext
                nextNext = nextNext.next
        return head