}

  /**
   * Sorts the array between {@code fromIndex} inclusive and {@code toIndex} exclusive, treating its
   * elements as unsigned 32-bit integers.
   *
   * @since 23.1
   */
  public static void sort(int[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    for (int i = fromIndex; i < toIndex; i++) {
      array[i] = flip(array[i]);
    }

   * Sorts the elements of {@code array} between {@code fromIndex} inclusive and {@code toIndex}
   * exclusive in descending order.
   *
   * @since 23.1
   */
  public static void sortDescending(int[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**

  }

  /**
   * Sorts the array between {@code fromIndex} inclusive and {@code toIndex} exclusive, treating its
   * elements as unsigned bytes.
   *
   * @since 23.1
   */
  public static void sort(byte[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    for (int i = fromIndex; i < toIndex; i++) {
      array[i] = flip(array[i]);
    }

  }

  /**
   * Sorts the array between {@code fromIndex} inclusive and {@code toIndex} exclusive, treating its
   * elements as unsigned 64-bit integers.
   *
   * @since 23.1
   */
  public static void sort(long[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    for (int i = fromIndex; i < toIndex; i++) {
      array[i] = flip(array[i]);
    }

    }

    @Override
    public ImmutableList<Character> subList(int fromIndex, int toIndex) {
      checkPositionIndexes(fromIndex, toIndex, size()); // for GWT
      return charactersOf(string.substring(fromIndex, toIndex));
    }

    @Override
    boolean isPartialView() {
      return false;
    }

    @Override

  }

  /**
   * Sorts the array between {@code fromIndex} inclusive and {@code toIndex} exclusive, treating its
   * elements as unsigned 64-bit integers.
   *
   * @since 23.1
   */
  public static void sort(long[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    for (int i = fromIndex; i < toIndex; i++) {
      array[i] = flip(array[i]);
    }

  @Override
  public ImmutableList<E> subList(int fromIndex, int toIndex) {
    checkPositionIndexes(fromIndex, toIndex, size());
    int length = toIndex - fromIndex;
    if (length == size()) {
      return this;
    } else if (length == 0) {
      return of();
    } else if (length == 1) {
      return of(get(fromIndex));
    } else {
      return subListUnchecked(fromIndex, toIndex);
    }
  }

  /**

   */
  @Override
  public ImmutableList<E> subList(int fromIndex, int toIndex) {
    checkPositionIndexes(fromIndex, toIndex, size());
    int length = toIndex - fromIndex;
    if (length == size()) {
      return this;
    } else if (length == 0) {
      return of();
    } else {
      return subListUnchecked(fromIndex, toIndex);
    }
  }

  /**

   * exclusive in descending order.
   *
   * @since 23.1
   */
  public static void sortDescending(byte[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    Arrays.sort(array, fromIndex, toIndex);
    Bytes.reverse(array, fromIndex, toIndex);
  }

   * exclusive in descending order.
   *
   * @since 23.1
   */
  public static void sortDescending(byte[] array, int fromIndex, int toIndex) {
    checkNotNull(array);
    checkPositionIndexes(fromIndex, toIndex, array.length);
    Arrays.sort(array, fromIndex, toIndex);
    Bytes.reverse(array, fromIndex, toIndex);
  }