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Reverse a singly linked list.
思路：没啥好说的。秒...
ListNode* reverseList(ListNode* head) { ListNode * rList = NULL, * tmp = NULL; while(head != NULL) { tmp = rList; rList = head; head = head->next; rList->next = tmp; } return rList; }
【leetcode】Reverse Linked List（easy）
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原文地址：http://www.cnblogs.com/dplearning/p/4519080.html
