import java.util.*;
public class Proov3n {
// Klassi Kolmnurk rakendusi
    public static void main(String args[]) {
   
	System.out.println("---------- Kolmnurk 1");
	Kolmnurk k1 = new Kolmnurk(3.0, 4.0, 5.0);	
	System.out.println(k1);
	if (k1.onPyth()) 
	  System.out.println("on pyth");
	else System.out.println("pole pyth"); 
	System.out.println("S = " + k1.pindala());
	
	System.out.println("----- Kolmnurk kaatetitega");	
	System.out.println
	   ("S = " + new Kolmnurk(3.0, 4.0).pindala());
	
	System.out.println("---------- Kolmnurk 2");
	Kolmnurk k2 =  new Kolmnurk(3.0, 3.0, 3.0);
	System.out.println(k2);
	System.out.println("S = " + k2.pindala());	
	if (k2.onPyth()) 
	   System.out.println("on pyth");
	else 
	   System.out.println("pole pyth"); 
	
	System.out.println("---------- Kolmnurgad 1 ja 2");
	if (Kolmnurk.onSarnased(k1,k2))
	   System.out.println("sarnased");
	else 
	   System.out.println("pole sarnased");
	 
	System.out.println("---------- Kolmnurk 3");     
	Kolmnurk k3 = new Kolmnurk(30.0, 40.0, 50.0);
	System.out.println(k3);
	if (k3.onPyth()) 
	  System.out.println("on pyth");
	else 
	  System.out.println("pole pyth"); 
	System.out.println("S = " + k3.pindala());
	
	System.out.println("---------- Kolmnurgad 1 ja 3");
	if (Kolmnurk.onSarnased(k1,k3))
	   System.out.println("sarnased");
	else 
	   System.out.println("pole sarnased");  
	  
	System.out.println("---------- Kolmnurk 4");
	Kolmnurk k4 = new Kolmnurk(3.0, 4.1, 5f/40);   
	System.out.println(k4);
	System.out.println("S = " + k4.pindala());
	System.out.println("Kyljed mittekahanevalt:");   
	for (Enumeration e = k4.kyljed123(); e.hasMoreElements();){
	   System.out.println(e.nextElement());
	} 
	   
	System.out.println("---------- Kolmnurk 5");
	Kolmnurk k5 = 
	  new Kolmnurk(60.0, 80.0, (float)(Math.PI/2));   
	System.out.println(k5);
	if (k1.onPyth()) 
	   System.out.println("on pyth");
	else 
	   System.out.println("pole pyth"); 
	System.out.println("Kyljed mittekahanevalt:");   
	for (Enumeration e = k5.kyljed123(); e.hasMoreElements();){
	   System.out.println(e.nextElement());
	} 
	System.out.println("---------- Kolmnurkade 4 ja 5"+
			    "\n vastavate kylgede suhted:");
	Enumeration e4 = k4.kyljed123();
	Enumeration e5 = k5.kyljed123();
	for(; e4.hasMoreElements(); ){
	   double x = ((Double)e4.nextElement()).doubleValue();
	   double y = ((Double)e5.nextElement()).doubleValue();
	   x = round(x, 2); y = round(y, 2);
	   System.out.println(x+"/"+y+"="+round(x/y, 3));
	}   
    }//main
    
      /**
     * Lühendada murdosa.
     *
     * @param x antud arv
     * @param n täisosa kohtade arv
     * @return lühendatud murdosaga.
     */
    static double round(double x, int n){
       double arv = Math.pow(10, n); //10 astmes (murdaosa kohtade arv) 
       return Math.round(x*arv)/arv;
    }//round 
}//Proov3n