//Author: A really cool guy.  

public class VarargsTest 
{
   public static double average (double... arr)
   {
	   double sum = 0;
	   for(int x = 0; x < arr.length; x++)
	   {
		   sum = sum + arr[x];
	   }	   
	   return sum / arr.length;
   }
   
   public static void main(String[] args)
   {
	   System.out.println(average(2,4,6,8));
	   
	   System.out.println(average(12,64,123,41,26,198));
	   
	   System.out.println(average());   //allowed, although this will output
   }					    //NaN as it will be dividing by zero
}