Top 15 Linked List Interview Questions and Solutions前15 名链表面试问题及解决方案 Without any further ado, here is a list of Leetcode problems you can solve to get better at linked list:闲话少说,这里列出了您可以解决的 Leetcode 问题,以便更好地使用链表: Reverse Linked List 反向链表Description:...
leetcode 141. Linked List Cycle (easy) Given a linked list, determine if it has a cycle in it. 快的节点终究会追赶上慢的节点,除非没有形成环,快节点会提前越界 ...LeetCode 141. Linked List Cycle 分析 难度 易 来源 https://leetcode.com/problems/linked-list-cycle/ 题目 Given a ...
Leetcode 141. Linked List Cycle floyd circle detection algorithm(龟兔赛跑算法) classSolution(object):defhasCycle(self, head):""":type head: ListNode :rtype: bool"""try: slow=head fast=head.nextwhileslowisnotfast: slow=slow.next fast=fast.next.nextreturnTrueexcept:returnFalse...
链接:http://leetcode.com/problems/linked-list-cycle-ii/ 题解: 使用快慢指针,也就是Floyd's cycle-finding algorithm / Tortoise and the Hare algorithm,注意第一个循环结束后要判断是否有环,假如没有环的话return null。 从快慢指针travel的距离得到 a + b + m * λ = 2(a + b) + n *λ, 得...
Nothing but admire: http://fisherlei.blogspot.com/2013/11/leetcode-linked-list-cycle-ii-solution.html classSolution {public: ListNode*detectCycle(ListNode *head) { ListNode dum(0); dum.next =head; ListNode*sp = &dum; ListNode*fp = &dum;while(sp &&fp) ...
Output: no cycle Explanation: There is no cycle in the linked list. Follow up: Can you solve it without using extra space? Floyd's cycle detection algorithm, aka Tortoise and Hare Algorithm ref:https://leetcode.com/problems/linked-list-cycle-ii/discuss/44793/O(n)-solution-by-using-two-...