/**
 * A function from {@code A} to {@code B} with an associated <i>reverse</i> function from {@code B}
 * to {@code A}; used for converting back and forth between <i>different representations of the same
 * information</i>.
 *
 * <h3>Invertibility</h3>
 *
 * <p>The reverse operation <b>may</b> be a strict <i>inverse</i> (meaning that {@code
 * converter.reverse().convert(converter.convert(a)).equals(a)} is always true). However, it is very

    return count;
  }

  /**
   * Reverses the elements of {@code array}. This is equivalent to {@code
   * Collections.reverse(Booleans.asList(array))}, but is likely to be more efficient.
   *
   * @since 23.1
   */
  public static void reverse(boolean[] array) {
    checkNotNull(array);
    reverse(array, 0, array.length);
  }

  /**

    return count;
  }

  /**
   * Reverses the elements of {@code array}. This is equivalent to {@code
   * Collections.reverse(Booleans.asList(array))}, but is likely to be more efficient.
   *
   * @since 23.1
   */
  public static void reverse(boolean[] array) {
    checkNotNull(array);
    reverse(array, 0, array.length);
  }

  /**

    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**
   * Reverses the elements of {@code array}. This is equivalent to {@code
   * Collections.reverse(Chars.asList(array))}, but is likely to be more efficient.
   *
   * @since 23.1
   */
  public static void reverse(char[] array) {
    checkNotNull(array);
    reverse(array, 0, array.length);
  }

  /**

    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**
   * Reverses the elements of {@code array}. This is equivalent to {@code
   * Collections.reverse(Shorts.asList(array))}, but is likely to be more efficient.
   *
   * @since 23.1
   */
  public static void reverse(short[] array) {
    checkNotNull(array);
    reverse(array, 0, array.length);
  }

  /**

    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**
   * Reverses the elements of {@code array}. This is equivalent to {@code
   * Collections.reverse(Shorts.asList(array))}, but is likely to be more efficient.
   *
   * @since 23.1
   */
  public static void reverse(short[] array) {
    checkNotNull(array);
    reverse(array, 0, array.length);
  }

  /**

    Arrays.sort(array, fromIndex, toIndex);
    reverse(array, fromIndex, toIndex);
  }

  /**
   * Reverses the elements of {@code array}. This is equivalent to {@code
   * Collections.reverse(Ints.asList(array))}, but is likely to be more efficient.
   *
   * @since 23.1
   */
  public static void reverse(int[] array) {
    checkNotNull(array);
    reverse(array, 0, array.length);
  }

  /**

    assertThat(Ints.stringConverter().reverse().convert(null)).isNull();
  }

  public void testStringConverter_reverse() {
    Converter<String, Integer> converter = Ints.stringConverter();
    assertThat(converter.reverse().convert(1)).isEqualTo("1");
    assertThat(converter.reverse().convert(0)).isEqualTo("0");
    assertThat(converter.reverse().convert(-1)).isEqualTo("-1");

    assertThat(Doubles.stringConverter().reverse().convert(null)).isNull();
  }

  @GwtIncompatible // Double.toString returns different value in GWT.
  public void testStringConverter_reverse() {
    Converter<String, Double> converter = Doubles.stringConverter();
    assertThat(converter.reverse().convert(1.0)).isEqualTo("1.0");
    assertThat(converter.reverse().convert(0.0)).isEqualTo("0.0");

    }

    /** Sorts the elements in reverse natural order. */
    @SuppressWarnings("CanIgnoreReturnValueSuggester") // see ImmutableSortedSetExplicitComparator
    @Override
    public List<Integer> order(List<Integer> insertionOrder) {
      sort(insertionOrder, Ordering.<Integer>natural().reverse());
      return insertionOrder;
    }
  }