反转链表python
2021/10/17 1:10:08
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# -*- coding:utf-8 -*- # class ListNode: # def __init__(self, x): # self.val = x # self.next = None class Solution: # 返回ListNode def ReverseList(self, pHead): # write code here pre = None cur = pHead temp = None while cur: temp = cur.next cur.next = pre #更新cur和pre pre = cur cur = temp return pre
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