public class NGlbVec3d {// 三维点 public double x, y, z; public NGlbVec3d() { } public NGlbVec3d(double vx, double vy, double vz) { x = vx; y = vy; z = vz; } public static double oper
描述 The Archeologists of the Current Millenium (ACM) now and then discover ancient artifacts located at vertices of regular polygons. The moving sand dunes of the desert render the excavations difficult and thus once three vertices of a polygon are di
Circle Through Three Points Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 3766 Accepted: 1570 Description Your team is to write a program that, given the Cartesian coordinates of three points on a plane, will find the equation of the
已知平面三点坐标A(x1, y1).B(x2, y2).C(x3, y3),三点定圆也就是三角形的中垂线交点, //平面三点定位算法 function locate(x1, y1, x2, y2, x3, y3) { var a, b; a = (y2 - y1) / (x2 - x1); b = y1 - a * x1; var xMiddle = (x1 + x2) / 2; var yMiddle = (y1 + y2) / 2; var c, lastX, lastY; if (a !=
在python3.7.1对列表的处理中,会经常使用到Python求两个list的差集.交集与并集的方法. 下面就以实例形式对此加以分析. # 求两个list的差集.并集与交集# 一.两个list差集## 如有下面两个数组: a = [1, 2, 3] b = [2, 3]# 想要的结果是[1]## 下面记录一下三种实现方式:## 1. 正常的方式 # ret = []# for i in a:# if i not in b:# ret.append(i)## print(ret)# 2.简化版