public class FirstDayAPCS {
   public static int[] array={1, 4, 7, 9}; // Fill in your own numbers
   
   //write the code to sum an array
   public static int sum(int [] array)
   {	
   	int sum = 0;
   	for (int i=0; ...) {
         ...
      }
      
   	return sum;
   }

   //complete the method
   public static double findAvg(int[] a)
   {   
	   return ... ;	
   }
   
   public static void main(String[] args) {
      //write a call for findAvg
      double average = findAvg(array);
      System.out.println("average "+ average);
      // Or print avg this way:
      System.out.println("average "+ findAvg(array));
     
   }
   
}