[leetcode]Linked List Cycle II @ Python
原题地址：http://oj.leetcode.com/problems/linked-list-cycle-ii/ 题意：如果链表中存在环路，找到环路的起点节点。 解题思路：这道题有点意思。首先使用快慢指针技巧，如果fast指针和slow指针相遇，则说明链表存在环路。具体技巧参见上一篇 ...
原文：[leetcode]Linked List Cycle @ Python
原题地址：http: oj.leetcode.com problems linked list cycle 题意：判断链表中是否存在环路。 解题思路：快慢指针技巧，slow指针和fast指针开始同时指向头结点head，fast每次走两步，slow每次走一步。如果链表不存在环，那么fast或者fast.next会先到None。如果链表中存在环路，则由于fast指针移动的速度是slow指针移动速度的两 ...
2014-04-30 16:33 0 3812 推荐指数：
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