Java 关于七星彩 机选次数排列

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();
}

}