int[] grades=new int[10];
		int i = 1;

		Scanner scan=new Scanner(System.in);
		System.out.println("please enter grades");

		grades[0]=scan.nextInt();
		int big = grades[0];
		int small = grades[0];

		while(i<10)
		{

			grades[i]=scan.nextInt();

			if(grades[i]>big){
				big=grades[i];
			}

			if(grades[i]<small){
				small=grades[i];
			}

			i++;

		}

		scan.close();

		System.out.println("the big is "+big);
		System.out.println("the small is "+small);