第五題

import java.io.*;
import java.awt.geom.Point2D;


public class Five {
public static void main(String[] args) throws IOException {
BufferedReader keyin;
keyin = new BufferedReader(new InputStreamReader(System.in));
double p1n, p1e, p2n, p2e, p3n, p3e, p4n, p4e, p5n, p5e, sum;
System.out.println("輸入第一點北緯UTM： ");
String n1 = keyin.readLine();
p1n = Double.parseDouble(n1);
System.out.println("輸入第一點東經UTM： ");
String e1 = keyin.readLine();
p1e = Double.parseDouble(e1);
System.out.println("輸入第二點北緯UTM： ");
String n2 = keyin.readLine();
p2n = Double.parseDouble(n2);
System.out.println("輸入第二點東經UTM： ");
String e2 = keyin.readLine();
p2e = Double.parseDouble(e2);
System.out.println("輸入第三點北緯UTM： ");
String n3 = keyin.readLine();
p3n = Double.parseDouble(n3);
System.out.println("輸入第三點東經UTM： ");
String e3 = keyin.readLine();
p3e = Double.parseDouble(e3);
System.out.println("輸入第四點北緯UTM： ");
String n4 = keyin.readLine();
p4n = Double.parseDouble(n4);
System.out.println("輸入第四點東經UTM： ");
String e4 = keyin.readLine();
p4e = Double.parseDouble(e4);
System.out.println("輸入第五點北緯UTM： ");
String n5 = keyin.readLine();
p5n = Double.parseDouble(n5);
System.out.println("輸入第五點東經UTM： ");
String e5 = keyin.readLine();
p5e = Double.parseDouble(e5);


Point2D.Double p1 = new Point2D.Double(p1n, p1e);
Point2D.Double p2 = new Point2D.Double(p2n, p2e);
Point2D.Double p3 = new Point2D.Double(p3n, p3e);
Point2D.Double p4 = new Point2D.Double(p4n, p4e);
Point2D.Double p5 = new Point2D.Double(p5n, p5e);

System.out.println("P1到P2的距離: " + p1.distance(p2));
System.out.println("P2到P3的距離: " + p2.distance(p3));
System.out.println("P3到P4的距離: " + p3.distance(p4));
System.out.println("P4到P5的距離: " + p4.distance(p5));
sum = p1.distance(p2) + p2.distance(p3) + p3.distance(p4) + p4.distance(p5);
System.out.println("五點距離總和: " + sum);

}

}