第四題

import java.awt.geom.Point2D;
class Diascomput {
public static void main (String args[]) {
Point2D.Double p1=new Point2D.Double(2777311.707,379074.9058);
Point2D.Double p2=new Point2D.Double(2777577.196,379794.8637);
Point2D.Double p3=new Point2D.Double(2779178.763,378124.9738);
Point2D.Double p4=new Point2D.Double(2780148.806,372998.4286);
Point2D.Double p5=new Point2D.Double(2782156.478,371784.0408);
System.out.println("p1到P2距離: "+ p1.distance(p2));
System.out.println("p2到P3距離: "+ p2.distance(p3));
System.out.println("p3到P4距離: "+ p3.distance(p4));
System.out.println("p4到P5距離: "+ p4.distance(p5));
}
}