assertThat(newArray[0], is("222"));
        assertThat(newArray[1], is("333"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testRemoveMiddle() throws Exception {
        final String[] array = new String[] { "111", "222", "333" };
        final String[] newArray = ArrayUtil.remove(array, "222");
        assertThat(newArray.length, is(2));

    assertThat(rangeSet.complement().asRanges())
        .containsExactly(Range.lessThan(3), Range.greaterThan(3))
        .inOrder();
  }

  public void testRemoveMiddle() {
    TreeRangeSet<Integer> rangeSet = TreeRangeSet.create();
    rangeSet.add(Range.atMost(6));
    rangeSet.remove(Range.closedOpen(3, 4));
    testInvariants(rangeSet);
    assertThat(rangeSet.asRanges())