/* S0240.java
 *       ポーカ検定
 *         (C) H.Ishikawa 2008 
 */

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


public class S0240 extends Applet{

	public void paint(Graphics g) {
	
		int NUMBER = 1000000;    /* 発生させる乱数の数 */
		int i;                   /* 表に示すi */
		int count;               /* 表に示すcount */
		int j, j1, j2, k;        /* forのカウンタ */
		int f[] = new int[7];   /* iごとの度数 */
		int f0[] = new int[7];  /* 理論度数 */
		int n[] = new int[5];   /* ５個の数字の並び */
		double xs = 0.0;         /* カイ自乗値 */
		double diff;             /* 理論値との差 */

		f0[0] = (int)(NUMBER * 0.3024);
		f0[1] = (int)(NUMBER * 0.5040);
		f0[2] = (int)(NUMBER * 0.1080);
		f0[3] = (int)(NUMBER * 0.0720);
		f0[4] = (int)(NUMBER * 0.0090);
		f0[5] = (int)(NUMBER * 0.0045);
		f0[6] = (int)(NUMBER * 0.0001);

		for (k = 1; k <= NUMBER; k ++){
			for (j = 0; j < 5; j ++){
				n[j] = (int)(Math.random() * 10);
			}
			count = 0;
			for (j1 = 0; j1 < 4; j1 ++){
				for (j2 = j1 + 1; j2 < 5; j2 ++){
					if (n[j1] == n[j2]) {
						count = count + 1;
					}
				}
			}
			if (count == 10){
				i = 6;
			} else if (count == 6){
				i = 5;
			} else{
				i = count;
			}
				f[i] = f[i] + 1;
		 	}
			g.drawString("      i            f[i]                        f0[i]", 10, 10);
			for (i = 0; i <= 6; i++){
				g.drawString("     " + i, 10 , 20 + 10 * i);
				g.drawString("     " + f[i], 40 , 20 + 10 * i);
				g.drawString("     " + f0[i], 120 , 20 + 10 * i);
				diff = f[i] - f0[i];
				xs = xs + diff * diff / f0[i];
		  	}
			g.drawString(" xs = " +  xs, 10, 30 + 10 * i);
		}
}