Line.h #pragma once //Microsoft Visual Studio 2015 Enterprise //根据两点式方法求直线,并求两条直线的交点 #include"BoundaryPoint.h" #include"Coordinates.h" class Line { public: Line GetLine(BoundaryPoint sourcePoint, BoundaryPoint endPoint); Line GetLine(C
Intersecting Lines Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 13481 Accepted: 5997 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
SQL中常常要判断两个时间段是否相交,该如何判断呢?比如两个时间段(S1,E1)和(S2,E2).我最先想到的是下面的方法一.方法一:(S1 BETWEEN S2 AND E2) OR (S2 BETWEEN S1 AND E1).很好理解:一个时间段的开始时间S1在另一个时间中间(S2,E2),或者开始时间S2在另一个时间中间(S1,E1),这个方法比较繁琐 方法二:本方法先考虑这两段时间什么情况下不相交,如图: -----+-----------------+-------------
You are given n points on Cartesian plane. Every point is a lattice point (i. e. both of its coordinates are integers), and all points are distinct. You may draw two straight lines (not necessarily distinct). Is it possible to do this in such a way t