IRelationalOperator 接口: 1. Provides access to members that determine if a certain spatial relationship exists between two geometries. Members     Description Contains Indicates if this geometry contains the other geometry.前者是否包含后者! Crosses Indicates

链表有环与链表相交判断的 Python 实现 目录 有环链表 相交链表 1 有环链表 判断链表是否有环可以参考链接, 有环链表主要包括以下几个问题(C语言描述): 判断环是否存在: 可以使用追赶方法,定义两个指针slow和fast,分别以1步和2步前进,若存在环则两者会相遇,否则fast遇到NULL时则退出: 获取环的长度:若存在环,则以相遇点为起点,fast和slow再次开始前进,第二次碰相遇slow走过的步数(1圈)即为环长度: 找出入环点:相遇点到连接点的距离 = 头指针到连接点的距离,因

链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=10 Area Time Limit: 2 Seconds      Memory Limit: 65536 KB      Special Judge Jerry, a middle school student, addicts himself to mathematical research. Maybe the problems he has thought are

Geometric Shapes Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 1243   Accepted: 524 Description While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To

Pipe Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 8280   Accepted: 2483 Description The GX Light Pipeline Company started to prepare bent pipes for the new transgalactic light pipeline. During the design phase of the new pipe shape th

Intersecting Lines Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 8342   Accepted: 3789 Description We all know that a pair of distinct points on a plane defines a line and that a pair of lines on a plane will intersect in one of three

Segments Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 7739   Accepted: 2316 Description Given n segments in the two dimensional space, write a program, which determines if there exists a line such that after projecting these segments

转载自 http://blog.csdn.net/william001zs/article/details/6213485 矢量 如果一条线段的端点是有次序之分的话,那么这种线段就称为 有向线段,如果有向线段p1p2的起点p1在坐标的原点,则可以把它称为矢量 p2 矢量的加减 设二维矢量 P = (x1, y1), Q = (x2, y2),则 P + Q = (x1 + x2, y1 + y2), P - Q = (x1 - x2, y1 - y2),且有 P + Q = Q + P, P -

Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishing throwing, Stan tries to find the top sticks, that is these sticks such that there is no stick on top of them. Stan has noticed that the la

Segment set Problem Description A segment and all segments which are connected with it compose a segment set. The size of a segment set is the number of segments in it. The problem is to find the size of some segment set.   Input In the first line th

\(\color{#0066ff}{题目描述}\) 小仓鼠的和他的基(mei)友(zi)sugar住在地下洞穴中,每个节点的编号为1~n.地下洞穴是一个树形结构.这一天小仓鼠打算从从他的卧室(a)到餐厅(b),而他的基友同时要从他的卧室(c)到图书馆(d).他们都会走最短路径.现在小仓鼠希望知道,有没有可能在某个地方,可以碰到他的基友? 小仓鼠那么弱,还要天天被zzq大爷虐,请你快来救救他吧! \(\color{#0066ff}{输入格式}\) 第一行两个正整数n和q,表示这棵树节点的个数和询问

http://poj.org/problem?id=1410 Intersection Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 11329   Accepted: 2978 Description You are to write a program that has to decide whether a given line segment intersects a given rectangle. An ex

http://poj.org/problem?id=2653 Pick-up sticks Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 9531   Accepted: 3517 Description Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishi

Treasure Hunt Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 4797   Accepted: 1998 Description Archeologists from the Antiquities and Curios Museum (ACM) have flown to Egypt to examine the great pyramid of Key-Ops. Using state-of-the-ar

private void button1_Click(object sender, EventArgs e) { //var result = intersect3(point1, point2, point3, point4); var strPoints = this.txtPoints.Text.Trim(); //数据库复制出来的经纬度字符串 strPoints = strPoints.Substring(0, strPoints.Length - 1); var pointArr =

题目大意:在一个正方形的迷宫里有一些交错墙,墙的两端都在迷宫的边缘墙上面,现在得知迷宫的某个位置有一个宝藏,所以需要砸开墙来获取宝藏(只能砸一段墙的中点),问最少要砸开几面墙.   分析:这个题意刚开始理解错了,以为只能砸整面墙的中点,而实际上使一段墙的中点,也就是两个交点之间的墙,这样问题就变得比较容易了,中点的意义也就不存在了,因为所有的墙都是连接的边缘,所以如果从起点到终点连线有这堵墙,那么这堵墙一定无法绕过去,所以枚举所有的边缘点到终点有几面墙即可,注意不管怎样,边缘墙一定是要砸的.  

Description Given n segments in the two dimensional space, write a program, which determines if there exists a line such that after projecting these segments on it, all projected segments have at least one point in common. Input Input begins with a n

模板敲错了于是WA了好几遍…… 判断由红点和蓝点分别组成的两个凸包是否相离,是输出Yes,否输出No. 训练指南上的分析: 1.任取红凸包上的一条线段和蓝凸包上的一条线段,判断二者是否相交.如果相交(不一定是规范相交,有公共点就算相交),则无解 2.任取一个红点,判断是否在蓝凸包内.如果是,则无解.蓝点红凸包同理. 其中任何一个凸包退化成点或者线段时需要特判. 其实只需要把上面两个判断顺序颠倒一下,就可以不需要特判. 先判断点是否在凸包内,因为这个考虑了点在凸包边界上的情况,所以后面判凸包线段是

描述 While creating a customer logo, ACM uses graphical utilities to draw a picture that can later be cut into special fluorescent materials. To ensure proper processing, the shapes in the picture cannot intersect. However, some logos contain such inte

题目链接:https://vjudge.net/problem/POJ-3449 题意:给出若干几何体,判断每个几何体与其它几何体的相交情况,并依次输出. 思路: 首先要知道的是根据正方形对角线的两个点怎么求其它两个点,比如已知(x0,y0),(x2,y2),那么: x1+x3=x0+x2, x1-x3=y2-y0, y1+y3=y0+y2, y1-y3=x0-x2 之后就暴力枚举了,枚举所有几何体的所有边,用线段相交判断几何体相交.这题的输入输出很恶心. AC代码: #include<cstd

Pick-up sticks Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 11884   Accepted: 4499 Description Stan has n sticks of various length. He throws them one at a time on the floor in a random way. After finishing throwing, Stan tries to fin