assertThat(Doubles.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Doubles.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Doubles.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Doubles.concat(ARRAY1, ARRAY1, ARRAY1))
        .isEqualTo(new double[] {(double) 1, (double) 1, (double) 1});
    assertThat(Doubles.concat(ARRAY1, ARRAY234))

    assertThat(Doubles.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Doubles.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Doubles.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Doubles.concat(ARRAY1, ARRAY1, ARRAY1))
        .isEqualTo(new double[] {(double) 1, (double) 1, (double) 1});
    assertThat(Doubles.concat(ARRAY1, ARRAY234))

   * b, c}}.
   *
   * @param arrays zero or more {@code boolean} arrays
   * @return a single array containing all the values from the source arrays, in order
   */
  public static boolean[] concat(boolean[]... arrays) {
    int length = 0;
    for (boolean[] array : arrays) {
      length += array.length;
    }
    boolean[] result = new boolean[length];
    int pos = 0;

    assertThat(Shorts.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Shorts.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Shorts.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Shorts.concat(ARRAY1, ARRAY1, ARRAY1))
        .isEqualTo(new short[] {(short) 1, (short) 1, (short) 1});
    assertThat(Shorts.concat(ARRAY1, ARRAY234))

        actual = Arrays.asList(KuromojiCSVUtil.parse(value));
        assertThat(actual, is(expected));

        value = " ";
        expected = Arrays.asList(" ");
        actual = Arrays.asList(KuromojiCSVUtil.parse(value));
        assertThat(actual, is(expected));

        value = "";
        expected = Arrays.asList("");
        actual = Arrays.asList(KuromojiCSVUtil.parse(value));

    for (int i = 0; i < 0x100; i++) {
      Integer[] array = new Integer[n];
      for (int j = 0; j < n; j++) {
        array[j] = rng.nextInt();
      }
      inputArrays[i] = array;
    }
  }

  @Benchmark
  int arraysSortNoComparator(int reps) {
    int tmp = 0;
    for (int i = 0; i < reps; i++) {
      Integer[] copy = inputArrays[i & 0xFF].clone();
      Arrays.sort(copy);
      tmp += copy[0];
    }

    Multiset<String> ms1 = HashMultiset.create(Arrays.asList("a", "b", "a"));
    Multiset<String> ms2 = HashMultiset.create(Arrays.asList("a"));
    assertThat(Multisets.difference(ms1, ms2)).containsExactly("a", "b");
  }

  public void testDifferenceWithRemovedElement() {
    Multiset<String> ms1 = HashMultiset.create(Arrays.asList("a", "b", "a"));
    Multiset<String> ms2 = HashMultiset.create(Arrays.asList("b"));

   *     in an {@code int}
   */
  public static long[] concat(long[]... arrays) {
    long length = 0;
    for (long[] array : arrays) {
      length += array.length;
    }
    long[] result = new long[checkNoOverflow(length)];
    int pos = 0;
    for (long[] array : arrays) {
      System.arraycopy(array, 0, result, pos, array.length);
      pos += array.length;
    }
    return result;
  }

    assertThat(Bytes.concat(ARRAY1)).isEqualTo(ARRAY1);
    assertThat(Bytes.concat(ARRAY1)).isNotSameInstanceAs(ARRAY1);
    assertThat(Bytes.concat(EMPTY, ARRAY1, EMPTY)).isEqualTo(ARRAY1);
    assertThat(Bytes.concat(ARRAY1, ARRAY1, ARRAY1))
        .isEqualTo(new byte[] {(byte) 1, (byte) 1, (byte) 1});
    assertThat(Bytes.concat(ARRAY1, ARRAY234))

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

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

  /**