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#yyds干货盘点# 面试必刷TOP101:反转链表
2022-07-25 18:38:00 【51CTO】
1.简述:
给定一个单链表的头结点pHead(该头节点是有值的,比如在下图,它的val是1),长度为n,反转该链表后,返回新链表的表头。
数据范围:
要求:空间复杂度 ,时间复杂度
。
如当输入链表{1,2,3}时,
经反转后,原链表变为{3,2,1},所以对应的输出为{3,2,1}。
以上转换过程如下图所示:

输入:
返回值:
输入:
返回值:
说明:
2.代码实现:
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