import java.util.Random;
public class Average {

	public static double average(int[] a) {
		double sum= 0;
				a[2] = -777;
		for (int i: a)
			sum+=i;

		return sum/a.length;
	} // average()
	
    public static void main(String[] args) {
    	int[] nums = new int[10];
    	
    	Random rnd = new Random();
    	for (int i=0; i<nums.length; i++)
    		nums[i] = rnd.nextInt(20);
    	
    	for (int n: nums)
    		System.out.print(n+ " ");
    	System.out.println();
    	
    	System.out.println("Average is " + average(nums));
    	
    	for (int n: nums)
    		System.out.print(n+ " ");
    	System.out.println();
    }
    
    
}