先回顾一下链表的类似问题 leetcode 141 判定链表是否有环 慢指针slowPtr每次后移1个结点。快指针fastPtr每次后移2个结点 LeetCode 142 找出环的入口点(起点) 当fast按照每次2步,slow每次一步的方式走,发现fastPtr和slowPtr重合 ...
You are given acirculararraynumsof positive and negative integers. If a numberkat an index is positive, then move forwardksteps. Conversely, if it s negative k , move backwardksteps. Since the array ...
2017-10-12 21:09 11 7399 推荐指数:
先回顾一下链表的类似问题 leetcode 141 判定链表是否有环 慢指针slowPtr每次后移1个结点。快指针fastPtr每次后移2个结点 LeetCode 142 找出环的入口点(起点) 当fast按照每次2步,slow每次一步的方式走,发现fastPtr和slowPtr重合 ...
环形数组循环 给定一个含有正整数和负整数的环形数组nums,如果某个索引中的数k为正数,则向前移动 k个索引,相反如果是负数-k,则向后移动k个索引。因为数组是环形的,所以可以假设最后一个元素的下一个元素是第一个元素,而第一个元素的前一个元素是最后一个元素,确定nums中是否存在循环或周期。循环 ...
Given an array `A` of integers, return `true` if and only if it is a *valid mountain array*. Recall that A is a mountain array if and only ...
Given a circular array C of integers represented by `A`, find the maximum possible sum of a non-empty subarray of C. Here, a circular array means ...
Design your implementation of the circular queue. The circular queue is a linear data structure in which the operations are performed based ...
对无锁队列的最初兴趣来自梁斌同志的一个英雄帖:http://coderpk.com/。 第一次看到这个题目的时候还不知道CAS,FAA等所谓的“原子操作”,但直觉上感觉,通过对读 ...
Let's call an array `A` a *mountain* if the following properties hold: A.length >= 3 There exists some 0 < i < A.length ...
(This problem is an interactive problem.) You may recall that an array A is a mountain array if and only if: A.length >= 3 There exists ...