21根火柴游戏（保证电脑胜利）

package day141018;


/**
 * 
 * 21根火柴，每次选择1-4根火柴（人先取，最后保证电脑胜利）
 * @author XWJ
 */


import java.util.Scanner;


public class Match21 {
public static void main(String[] args) {
Scanner N = new Scanner(System.in);
int total = 21, total2 = 21;
while (total > 1) {
System.out.print("请输入您要抽取的火柴数量：");
int hum = N.nextInt();
int com;
if (1 <= hum || hum <= 4) {
com = 5 - hum;
System.out.printf("电脑抽取的火柴数量为：%d\n", com);
total = total - com - hum;
total2 = total - hum;
System.out.printf("剩余火柴数量为：%d\n", total);


if (total2 == 1) {
System.out.printf("玩家胜利！");
} else if (total == 1) {
System.out.printf("庄家胜利！");
}
}
}
N.close();
}
}