Listing 7: DoubleBubbleSorter.java

public class DoubleBubbleSorter extends BubbleSorter
{
  private double[] array = null;
  public int sort(double [] theArray)
  {
    array = theArray;
    length = array.length;
    return doSort();
  }

  protected void swap(int index)
  {
    double temp = array[index];
    array[index] = array[index+1];
    array[index+1] = temp;
  }

  protected boolean outOfOrder(int index)
  {
    return (array[index] > array[index+1]);
  }
}