It's still an Amazon interview question. Given an array containing only stars '*' and hashes '#' . Find longest contiguous sub array that will contain equal no. of stars '*' and hashes '#'.Output the index range if the longest contiguous sub array do…

Let's call any (contiguous) subarray B (of A) a mountain if the following properties hold: B.length >= 3 There exists some 0 < i < B.length - 1 such that B[0] < B[1] < ... B[i-1] < B[i] > B[i+1] > ... > B[B.length - 1] (Note tha…

Let's call any (contiguous) subarray B (of A) a mountain if the following properties hold: B.length >= 3 There exists some 0 < i < B.length - 1 such that B[0] < B[1] < ... B[i-1] < B[i] > B[i+1] > ... > B[B.length - 1] (Note tha…

原题链接在这里:https://leetcode.com/problems/longest-mountain-in-array/ 题目: Let's call any (contiguous) subarray B (of A) a mountain if the following properties hold: B.length >= 3 There exists some 0 < i < B.length - 1 such that B[0] < B[1] < ...…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 双数组 参考资料 日期 题目地址:https://leetcode.com/problems/longest-mountain-in-array/description/ 题目描述 Let's call any (contiguous) subarray B (of A) a mountain if the following properties…

题目如下: 解题思路:本题的关键是找出从升序到降序的转折点.开到升序和降序,有没有联想的常见的一个动态规划的经典案例--求最长递增子序列.对于数组中每一个元素的mountain length就是左边升序的子序列长度加上右边降序的左序列长度.对于右边降序,如果我们遍历数组,那么降序就是升序.那么我们要做的就是,分别正序和倒序遍历数组,求出每个元素的左边和右边升序的子序列长度,那么这个长度的和就是答案.如下图,我们分别用两个数组保持正序和逆序遍历时候,每个元素在当前所属的递增子序列中的长度位置,如果…

我们把数组 A 中符合下列属性的任意连续子数组 B 称为 “山脉”: B.length >= 3 存在 0 < i < B.length - 1 使得 B[0] < B[1] < ... B[i-1] < B[i] > B[i+1] > ... > B[B.length - 1](注意:B 可以是 A 的任意子数组,包括整个数组 A.) 给出一个整数数组 A,返回最长 “山脉” 的长度. 如果不含有 “山脉” 则返回 0. 示例 1: 输入:[2,1,…

Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Input: [0,1] Output: 2 Explanation: [0, 1] is the longest contiguous subarray with equal number of 0 and 1. Example 2: Input: [0,1,0] Outp…

Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. Example 1: Input: [0,1] Output: 2 Explanation: [0, 1] is the longest contiguous subarray with equal number of 0 and 1.  Example 2: Input: [0,1,0] Out…

描述 Given a binary array, find the maximum length of a contiguous subarray with equal number of 0 and 1. 示例 Example 1: Input: [0,1] Output: 2 Explanation: [0, 1] is the longest contiguous subarray with equal number of 0 and 1. Example 2: Input: [0,1,0…