Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. Have you met this question in a real interview? Yes Example Given [0,1,0,2,1,0,1,3,2,1,2,1], return…

Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. For example, Given [0,1,0,2,1,0,1,3,2,1,2,1], return 6. The above elevation map is represented by a…

Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. The above elevation map is represented by array [0,1,0,2,1,0,1,3,2,1,2,1]. In this case, 6 units of…

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 暴力求解 保存左右最大值 单调栈 日期 题目地址:https://leetcode-cn.com/problems/string-to-integer-atoi/ 题目描述 Given n non-negative integers representing an elevation map where the width of each bar is…

Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. The above elevation map is represented by array [0,1,0,2,1,0,1,3,2,1,2,1]. In this case, 6 units of…

Given n x m non-negative integers representing an elevation map 2d where the area of each cell is 1 x 1, compute how much water it is able to trap after raining. Example Given 5*4 matrix [12,13,0,12] [13,4,13,12] [13,8,10,12] [12,13,12,12] [13,13,13,…

Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining.   Example Given [0,1,0,2,1,0,1,3,2,1,2,1], return 6. Challenge O(n) time and O(1) memory O(n) time…

1. 原始题目 给定 n 个非负整数表示每个宽度为 1 的柱子的高度图,计算按此排列的柱子,下雨之后能接多少雨水. 上面是由数组 [0,1,0,2,1,0,1,3,2,1,2,1] 表示的高度图,在这种情况下,可以接 6 个单位的雨水(蓝色部分表示雨水). 感谢 Marcos 贡献此图. 示例: 输入: [0,1,0,2,1,0,1,3,2,1,2,1] 输出: 6 2. 思路 最简单的想法:对于每个元素都要考虑它能接多少雨水: 第一个元素是0,能接0雨水 第二个元素是1,能接0雨水 第三个元素…

给定 n 个非负整数表示每个宽度为 1 的柱子的高度图,计算下雨之后能接多少雨水.例如,输入 [0,1,0,2,1,0,1,3,2,1,2,1],返回 6. 详见:https://leetcode.com/problems/trapping-rain-water/description/ Java实现: 方法一: 先遍历一遍找到塔顶,然后分别从两边开始,往塔顶所在位置遍历,水位只会增高不会减小,且一直和最近遇到的最大高度持平,这样知道了实时水位,就可以边遍历边计算面积. 参考:https://w…

Given an m x n matrix of positive integers representing the height of each unit cell in a 2D elevation map, compute the volume of water it is able to trap after raining. Note:Both m and n are less than 110. The height of each unit cell is greater tha…