def reverse(head): if head == None or head.next == None: return head psuhead = ListNode(-1) while head: nexthead = head.next head.next = psuhead.next psuhead.next = head head = nexthead head = psuhead.next del psuhead return head
【剑指offer】Q16:翻转链表
时间: 2024-11-10 21:15:05