27153 njczy2010 1206 Accepted 1976 KB 234 MS G++ 1415 B 2014-09-28 10:01:23 真是吐血ac,,,,这么easy的题..... Dormitory's Elevator Accepted : 46 Submit : 302 Time Limit : 1000 MS Memory Limit : 65536 KB Problem Description The new dormitory has N(1≤N≤10000…
Given a linked list, determine if it has a cycle in it. Follow up:Can you solve it without using extra space? 判断一个链表是否存在环,维护快慢指针就可以,如果有环那么快指针一定会追上慢指针,代码如下: class Solution { public: bool hasCycle(ListNode *head) { ListNode * slow, * fast; slow = fast…