import java.util.Comparator;

/** FitnessComparator.java - I think I want to sort the fitness in
 *  descending order.  So, we need to switch the order of subtraction
 *  because we are accustomed to sort in ascending order.
 */

public class FitnessComparator implements Comparator
{
  public int compare(Object o1, Object o2)
  {
    Individual i1 = (Individual) o1;
    Individual i2 = (Individual) o2;
    
    // Reverse the difference because we want descending sort.
    return -(i1.findFitness() - i2.findFitness());
  }
}