import java.applet.Applet;
import java.awt.*;
public class rj1 extends Applet{
Image pilt;
Graphics piltg;
int koht=0, aste=0;
int arv=36, reanr=1, juur=1, vahe, vahearv ;
FontMetrics fm;
Button nupp=new Button("Next");
TextField tf=new TextField(5);
Panel p=new Panel();

public void init(){
 this.setBackground(Color.white);
 vahearv=arv;
 pilt=createImage(400, 200);
 piltg=pilt.getGraphics();
 fm=getFontMetrics(getFont());
 p.setLayout(new BorderLayout());
 p.add("North", tf);
 p.add("South", nupp);
 add("East", p);
 joonista();
}

void joonista(){

if(vahearv>0){
 tf.setText(Integer.toString(juur));
 piltg.drawString(Integer.toString(vahearv), 50-fm.stringWidth(Integer.toString(vahearv)), reanr++*10);
 piltg.drawString(Integer.toString(2*juur-1), 50-fm.stringWidth(Integer.toString(2*juur-1)), reanr++*10);
 piltg.drawLine(20, reanr*10-8, 50, reanr*10-8);
 reanr++;
 vahearv-=2*juur-1;
 juur++;}
if(vahearv==0){nupp.setLabel("Complete");
piltg.drawString("0",50-fm.stringWidth("0"), reanr*10); }
 repaint();

}

public void paint(Graphics g){
 g.drawImage(pilt, 0, 0, this);
}

public boolean action(Event e, Object arg){
 if(e.target.equals(nupp)){
 joonista();}
 return super.action(e, arg);
}
}