/** The Calculator class here makes use of the getValue() functions so that
 *  it can determine the max and average of any kind of array in our program.
 */
public class Calculator
{
  // Find out which element of some array has the max value.
  public Measureable getMaximum(Measureable [] array)
  {
    Measureable max = array[0];
    for (int i = 1; i < array.length; ++i)
    {
      if (array[i].getValue() > max.getValue())
   	max = array[i];
    }
    return max;
  }

  // Find the average value in an array.
  public double getAverage(Measureable [] array)
  {
    double sum = 0;
    for (int i = 0; i < array.length; ++i)
      sum += array[i].getValue();
    return sum / array.length;
  }
}