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Published: Aug 9, 2023 License: GPL-3.0 Imports: 2 Imported by: 0

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92.反转链表 II

1. 题目描述

给你单链表的头指针 head 和两个整数  leftright ,其中  left <= right 。请你反转从位置 left 到位置 right 的链表节点,返回 反转后的链表 。  

示例 1:


输入:head = [1,2,3,4,5], left = 2, right = 4
输出:[1,4,3,2,5]

示例 2:


输入:head = [5], left = 1, right = 1
输出:[5]

 

提示:

  • 链表中节点数目为 n
  • 1 <= n <= 500
  • -500 <= Node.val <= 500
  • 1 <= left <= right <= n  

进阶: 你可以使用一趟扫描完成反转吗?

标签 链表

2. 解题

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