Smallest Bounding Rectangle Given the Cartesian coordinates of n(>0)2-dimensional points, write a program that computes the area of their smallest bounding rectangle (smallest rectangle containing all the given points). Input The input le may contain…

Smallest Bounding Rectangle Given the Cartesian coordinates of n(>0)2-dimensional points, write a program that computes the area of their smallest bounding rectangle (smallest rectangle containing all the given points). Input The input le may contain…

\(\color{#0066ff}{题目描述}\) 给定n(>0)二维点的笛卡尔坐标,编写一个程序,计算其最小边界矩形的面积(包含所有给定点的最小矩形). 输入文件可以包含多个测试样例.每个测试样例从包含一个正数的行开始. 整数N(<1001),表示该测试样例中的点的数量.接下来的n行各包含两个实数,分别给出一个点的x和y坐标.输入最后包含一个值为0的测试样例,该值必须不被处理. 对于输入中的每个测试样例都输出一行,包含最小边界矩形的面积,小数点后四舍五入到第四位. \(\color{#006…

https://vjudge.net/problem/UVA-12307 求覆盖所有点的最小矩形面积.周长 相当于求凸包的最小面积外接矩形.最小周长外接矩形 结论: 这个矩形一定有一条边和凸包上一条边重合 证明去看https://wenku.baidu.com/view/f11d0836ee06eff9aef807d9.html 枚举一条边,用旋转卡壳求其他三边 假设现在正枚举到A点,对应紫色边, 显然,紫色边的对边一定 过A点的对踵点且与紫色边平行 那么矩形的高|BH|=AE.AB的叉积/ |…

题意:给你一些点,找出两个可以包含所有点的矩形,一个保证矩形面积最小,一个保证矩形周长最小,输出两个最小值 题解:首先根据所有点求一个凸包,再在这个凸包上枚举每条边,作为矩形的一条边(这样可以保证最小) 接着根据旋转卡壳的思想求出另外三条边,这样枚举判断就好 求另三条边时首先方向是确定了的,找点就是旋转卡壳,思想就是:枚举的任意两条边a与b,a的另三条边与b的另三条边都不会再a与b之间,并且b对应边一定最a对应边的      后面(注意是循环的边)那么就是说,我们可以使用类似双指针方式维护,但是…

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An image is represented by a binary matrix with 0 as a white pixel and 1 as a black pixel. The black pixels are connected, i.e., there is only one black region. Pixels are connected horizontally and vertically. Given the location (x, y) of one of the…

An image is represented by a binary matrix with 0 as a white pixel and 1 as a black pixel. The black pixels are connected, i.e., there is only one black region. Pixels are connected horizontally and vertically. Given the location (x, y) of one of the…

原题链接在这里:https://leetcode.com/problems/smallest-rectangle-enclosing-black-pixels/ 题目: An image is represented by a binary matrix with 0 as a white pixel and 1 as a black pixel. The black pixels are connected, i.e., there is only one black region. Pixe…

题目: An image is represented by a binary matrix with 0 as a white pixel and 1 as a black pixel. The black pixels are connected, i.e., there is only one black region. Pixels are connected horizontally and vertically. Given the location (x, y) of one of…