Description Given a rectangle and a circle in the coordinate system(two edges of the rectangle are parallel with the X-axis, and the other two are parallel with the Y-axis), you have to tell if their borders intersect. Note: we call them intersect ev
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: -----+-----------------+-------------
传送门: http://acm.hdu.edu.cn/showproblem.php?pid=1221 Rectangle and Circle Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3434 Accepted Submission(s): 904 Problem Description Given a rectangle
题目传送门:POJ 3304 Segments 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. Inp
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
You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6425 Accepted Submission(s): 3099 Problem Description Many geometry(几何)problems were designed in the ACM/I
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