package testmypoint;
class MyPoint{
private double x;
private double y;
public MyPoint()//默認值
{
x=0;
y=0;
}
public MyPoint(double x,double y)
{
this.x=x;
this.y=y;
}
public double distance(MyPoint m)//給一個點
{
double a=Math.sqrt((this.x-m.x)*(this.x-m.x)+(this.y-m.y)*(this.y-m.y));
return a;
}
public double distance(double x,double y)//給出座標
{
double a=Math.sqrt((this.x-x)*(this.x-x)+(this.y-y)*(this.y-y));
return a;
}
}
public class TestMyPoint //測試類((10,30.5)到(0,0)的距離)
{
public static void main(String[] args) {
MyPoint a1=new MyPoint();
MyPoint a2=new MyPoint(10,30.5);
System.out.printf("%.2f\n",a1.distance(a2));
System.out.printf("%.2f\n",a1.distance(10, 30.5));
}
}
java編程座標距離問題(二維)
發表評論
所有評論
還沒有人評論,想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.