code: public int[] toArray(final int[] array) {
  		final int[] a = array.length >= length() ? array : new int[length()];
  		for (int i = length(); --i >= 0;) {
  			a[i] = intValue(i);
  		}
  
  		return a;
  	}
docs: Returns an int array containing all of the elements in this chromosome
  in proper sequence.  If the chromosome fits in the specified array, it is
  returned therein. Otherwise, a new array is allocated with the length of
  this chromosome.
  
  @since 3.0
  
  @param array the array into which the elements of this chromosomes are to
  be stored, if it is big enough; otherwise, a new array is
  allocated for this purpose.
  @return an array containing the elements of this chromosome
  @throws NullPointerException if the given {@code array} is {@code null}