import java.util.Scanner; //For console input
public class ArrayDemo {
	public void doTheThing() {
		double[] values; //Array of readings; not yet sized!
		int numValues; //This will define the size of the array
		Scanner input=new Scanner(System.in);
		
		System.out.print("How many values would you like? ");
		numValues=input.nextInt();
		values=new double[numValues]; //Allocating the array!
		
		//Let's split out populating the array
		enterValues(values,input);
		
		//Now let's display them!
		displayValues(values);
		
		//And now, the average!
		double sum=values[0];
		for ( int i=1; i<values.length; i++ )
			sum+=values[i];
		System.out.println("Average: "+sum/numValues);
	}
	
	private void enterValues( double[] values, Scanner in ) {
		for ( int i=0; i<values.length; i++ ) {
			System.out.print("> ");
			values[i]=in.nextDouble();
		}
	}
	
	private void displayValues( double[] arr ) {
		//Note that we neither have, nor need, numValues here
		for ( int i=0; i<arr.length; i++)
			System.out.print( "\t"+arr[i] );
		System.out.println();
	}
	
	public static void main(String[] args) {new ArrayDemo().doTheThing();}
}