public class Test01 {	public static void main(String[] args) {	Scanner sc = new Scanner(System.in);	System.out.print("请输入一个数");		int a = sc.nextInt();			for(int i = 1;i <= a; i++){				for(int j=1;j<= 7;j++){		int k=(int)(Math.random()*10);							System.out.print(k+" ");           }						System.out.println();       }	sc.close();}	}