/* A0520.java  ５章１．解答
 *    　　     exp 定積分 その２
 *         (C) H.Ishikawa 2008 
 */

package simulation;
import java.applet.*;
import java.awt.*;

public class A0520 extends Applet{

	public void paint(Graphics g) {
		int NUMBER =   10000;
		int    j;
		double y0;
		double s = 0.0;

		for (j = 1; j <= NUMBER; j ++) {
			y0 = Math.exp( - Math.random());
			s = s + y0;
		}
		s = s / NUMBER;
		g.drawString("s =" + s, 10,  10);           
	}
}