if (length == 0) {
        return;
      }
      E[] sortedElements = Arrays.copyOf(elements, length);
      Arrays.sort(sortedElements, comparator);
      int uniques = 1;
      for (int i = 1; i < sortedElements.length; i++) {
        if (comparator.compare(sortedElements[uniques - 1], sortedElements[i]) < 0) {
          sortedElements[uniques] = sortedElements[i];
          uniques++;
        }
      }