Given a linked list, determine if it has a cycle in it.
Follow up:Can you solve it without using extra space?
给定一个链表,判断是否有环存在。Follow up: 不使用额外空间。
解法:双指针,一个慢指针每...
Linked List Cycle
Given a linked list, determine if it has a cycle in it.
Follow up:Can you solve it without using extra space?
解法一:
使用unordered_map记录当前节点是否被访问过,如访问过说明有环...
Given a linked list, determine if it has a cycle in it.
To represent a cycle in the given linked list, we use an integer pos which represents the position (0-indexed) in the linked l...
141. Linked List Cycle【easy】
Given a linked list, determine if it has a cycle in it.
Follow up:Can you solve it without using extra space?
解法一:
/**
* Definition for singly-linked list.
*...