code: public int[] asArray() {
  	    int arr[] = new int[size()];
  	    OrdinalIterator iter = iterator();
  	    
  	    int ordinal = iter.nextOrdinal();
  	    int i = 0;
  
  	    while(ordinal != NO_MORE_ORDINALS) {
  	        arr[i++] = ordinal;
  	        ordinal = iter.nextOrdinal();
  	    }
  	    
  	    return arr;
  	}
docs: Returns an array containing all elements in the set.