题目链接:https://leetcode.com/problems/swim-in-rising-water/ 题意:已知一个n*n的网格,初始时的位置为(0,0),目标位置为(n-1,n-1),且在t时刻,只有当网格中的值小于等于t时才能移动到该网格,且移动时只有上下左右四个方向.输出到网格(n-1,n-1)的最短时间. 思路:dfs一下即可,记录一个dp数组,表示到该网格的最小时间,开始时每个网格都设为无穷大,每次更新时间t为当前格子的值与上一时间的较大值.当周围网格的最小时间比当前网格大…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/swim-in-rising-water/description/ 题目描述: On an N x N grid, each square grid[i][j] represents the elevation at that point (i,j). Now rain starts to fall. At tim…

题目如下: 解题思路:本题题干中提到了一个非常重要的前提:"You can swim infinite distance in zero time",同时也给了一个干扰条件,那就是示例2里面的说明,"We need to wait until time 16 so that (0, 0) and (4, 4) are connected.".那么,游泳的人是否需要先游到(1,4)这个点然后等待到time16呢?把问题简化一下,游泳者可以直接在(0,0)等待到time…

▶ 给定方阵 grid,其元素的值为 D0n-1,代表网格中该点处的高度.现在网格中开始积水,时刻 t 的时候所有值不大于 t 的格点被水淹没,当两个相邻格点(上下左右四个方向)的值都不超过 t 的时候我们称他们连通,即可以通过游泳到达,请问能将主对角两顶点((0, 0) 和 (n-1, n-1))连通的最小时刻是多少?例如 下图的最小连通时间为 16 . ● 自己的代码,22 ms,简单 BFS,普通队列 class Solution { public: int swimInWater(vec…

On an N x N grid, each square grid[i][j] represents the elevation at that point (i,j). Now rain starts to fall. At time t, the depth of the water everywhere is t. You can swim from a square to another 4-directionally adjacent square if and only if th…

On an N x N grid, each square grid[i][j]represents the elevation at that point (i,j). Now rain starts to fall. At time t, the depth of the water everywhere is t. You can swim from a square to another 4-directionally adjacent square if and only if the…

一天一道LeetCode系列 (一)题目 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 m…

炎炎夏日,还是呆在空调房里切切题吧. Container With Most Water,题意其实有点噱头,简化下就是,给一个数组,恩,就叫 height 吧,从中任选两项 i 和 j(i <= j),使得 Math.min(height[i], height[j]) * (j - i) 最大化,求解这个最大值. O(n^2) O(n^2) 复杂度的解法非常容易想到,直接两两枚举. var maxArea = function(height) { var len = height.length;…

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…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 42: Trapping Rain Waterhttps://oj.leetcode.com/problems/trapping-rain-water/ Given n non-negative integers representing an elevation map where the width of each bar is 1,compute how much wa…

# -*- coding: utf8 -*-'''https://oj.leetcode.com/problems/container-with-most-water/ Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai).n vertical lines are drawn such that the two endpoints of line i i…

Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a containe…

一天一道LeetCode系列 (一)题目 Given n non-negative integers a1, a2, -, an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-ax…

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 non-negative integers a1, a2, ..., an , where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a contain…

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…

作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址: https://leetcode.com/problems/pacific-atlantic-water-flow/description/ 题目描述 Given an m x n matrix of non-negative integers representing the height of each unit cell in a continent, the "Pa…

题目描述: Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a co…

问题描述 Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a con…

Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a containe…

Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a containe…

问题描述: Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a co…

Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a containe…

Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a containe…

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 a1, a2, ..., an , where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a contain…

一.题目链接:https://leetcode.com/problems/container-with-most-water/ 二.题目大意: 给定n个非负整数a1,a2....an:其中每一个整数对应着一条垂直的线段,即(i,ai)到(i,0)这个线段.其中这n个线段中,任意两个线段与x轴就构成了一个容器:要你找出体积最大的容器出来,并返回它的体积值. 三.题解: 这道题目最容易想到的就是暴力法,从n个线段中任取两个来组成容器进行判断. 方法1: 暴力法,代码如下: class Solutio…

题目链接 https://leetcode.com/problems/container-with-most-water/?tab=Description   Problem: 已知n条垂直于x轴的线段,选择其中两条,使得该线段和x轴能够存储最大量的水.   1.首先如何计算存储水量 横坐标之差乘以最低高度 2.遍历所有情况则需要n*(n-1)/2,时间复杂度为o(n^2) 3.根据木桶原理,容水量由最短木板决定,因此在遍历时,按照最短木板原理进行对i,j线段的选择   参考代码: packag…

题目 Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which together with x-axis forms a conta…

Trapping Rain Water 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…