Scrambled Polygon - POJ 2007（求凸包）

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Scrambled Polygon - POJ 2007（求凸包）

给一些点,这些点都是一个凸包上的顶点,以第一个点为起点顺时针把别的点拍排一下序列. 分析:最简单的极坐标排序了..................... 代码如下: -------------------------------------------------------------------------------------------------------------------------- #include<iostream> #include<algorithm>…

Scrambled Polygon POJ - 2007 极角排序

题意: 给你n个点,这n个点可以构成一个多边形(但是不是按顺序给你的).原点(0,0)为起点,让你按顺序逆序输出所有点题解: 就是凸包问题的极角排序用double一直Wa,改了int就可以了 //原点(0,0)为起点,逆序输出多边形的点 #include<stdio.h> #include<string.h> #include<iostream> #include<algorithm> #include<queue> #include<…

poj 3525 求凸包的最大内切圆

Most Distant Point from the Sea Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 3640 Accepted: 1683 Special Judge Description The main land of Japan called Honshu is an island surrounded by the sea. In such an island, it is natural t…

POJ 2187 求凸包上最长距离

简单的旋转卡壳题目以每一条边作为基础,找到那个最远的对踵点,计算所有对踵点的点对距离这里求的是距离的平方,所有过程都是int即可 #include <iostream> #include <cstdio> #include <cstring> #include <cstdlib> #include <cmath> #include <algorithm> using namespace std; #define N 50010 #…

POJ 2007 Scrambled Polygon 凸包

Scrambled Polygon Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 7214 Accepted: 3445 Description A closed polygon is a figure bounded by a finite number of line segments. The intersections of the bounding line segments are called the…

POJ 2007 Scrambled Polygon [凸包极角排序]

Scrambled Polygon Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 8636 Accepted: 4105 Description A closed polygon is a figure bounded by a finite number of line segments. The intersections of the bounding line segments are called the…

POJ 2007 Scrambled Polygon 极角序水

LINK 题意:给出一个简单多边形,按极角序输出其坐标. 思路:水题.对任意两点求叉积正负判断相对位置,为0则按长度排序 /** @Date : 2017-07-13 16:46:17 * @FileName: POJ 2007 凸包极角序.cpp * @Platform: Windows * @Author : Lweleth (SoungEarlf@gmail.com) * @Link : https://github.com/ * @Version : $Id$ */ #include <…