input = Arrays.copyOf(input, input.length);
    Ints.sortDescending(input, fromIndex, toIndex);
    assertThat(input).isEqualTo(expectedOutput);
  }

  public void testSortDescendingIndexed() {
    testSortDescending(new int[] {}, 0, 0, new int[] {});
    testSortDescending(new int[] {1}, 0, 1, new int[] {1});
    testSortDescending(new int[] {1, 2}, 0, 2, new int[] {2, 1});

    Floats.sortDescending(input, fromIndex, toIndex);
    for (int i = 0; i < input.length; i++) {
      assertThat(input[i]).isEqualTo(expectedOutput[i]);
    }
  }

  public void testSortDescendingIndexed() {
    testSortDescending(new float[] {}, 0, 0, new float[] {});
    testSortDescending(new float[] {1}, 0, 1, new float[] {1});
    testSortDescending(new float[] {1, 2}, 0, 2, new float[] {2, 1});