Java 随机生成1~10内的随机数，来猜数大小

Scanner scanner=new Scanner(System.in);

         int num=(int)(Math.random()*10);

         int a;

         int count=1;

         a=scanner.nextInt();

         while(a!=num){

         if(a>num) {

             System.out.println("猜大了！");

             count=count+1;

         }else {

             System.out.println("猜小了！");

             count=count+1;

         }

         a=scanner.nextInt();

         }

         System.out.println("恭喜你，猜对了，你一共猜"+count+"下！");

    }