Reads in a sequence of real numbers and computes their average.

Average.java

public class Average
{ 
    private Average() { }

    public static void main( String[] args )
    { 
        int count = 0;
        double sum = 0.0;

        while ( !StdIn.isEmpty() )
        {
            double value = StdIn.readDouble();
            sum += value;
            count++;
        }

        double average = sum / count;
        StdOut.println( "Average is " + average );
    }
}