题解 | #判断链表中是否有环#
判断链表中是否有环
https://www.nowcoder.com/practice/650474f313294468a4ded3ce0f7898b9
# class ListNode:
# def __init__(self, x):
# self.val = x
# self.next = None
#
#
# @param head ListNode类
# @return bool布尔型
#
class Solution:
def hasCycle(self , head: ListNode) -> bool:
fast = slow = head
while fast and fast.next:
fast = fast.next.next
slow = slow.next
if slow == fast:
return True
return False
算法刷题记录 文章被收录于专栏
刷题，记录牛客的101
