code: public boolean fastUnorderedRemoveInt(final int value)
      {
          @DoNotSub final int index = indexOf(value);
          if (-1 != index)
          {
              elements[index] = elements[--size];
  
              return true;
          }
  
          return false;
      }
docs: Remove the first instance of a value if found in the list and replaces it with the last item
  in the list. This saves a copy down of all items at the expense of not preserving list order.
  
  @param value to be removed.
  @return true if successful otherwise false.