題目描述

輸入一個連結串列，反轉連結串列後，輸出連結串列的所有元素。

題目連結

# -*- 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
        if not pHead or not pHead.next:
            return
 
 pHead
        else:
            newHead = self.ReverseList(pHead.next)
            pHead.next.next=pHead
            pHead.next=None
            return newHead

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