Leetcode 206. 反转链表 发布时间:2026/8/2 17:46:03 考察链表的操作classSolution:defreverseList(self,head:Optional[ListNode])-Optional[ListNode]:prevNonecurrheadwhilecurr:next_nodecurr.nextcurr.nextprev prevcurr currnext_nodereturnprev