猜数字。。

public class t6 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		int count = 0;
        for (int i = 1 ; i <= 4;i++ )
            for(int j = 1 ; j <= 4;j++ )
                for(int k = 1 ; k <= 4;k++ )
                	//三个数互不相等并且都是从1到4
                    if(i!=j&&j!=k&&i!=k){
                        count+=1;
                        System.out.println(i*100+j*10+k);
                    }
        System.out.println(count);


	}

}