public static void main(String[] args) {
    int[] array = ArrayUtils.randomIntArray(10000, 100);
    System.out.println(Arrays.toString(array));
    StopWatch stopwatch = new StopWatch();
    stopwatch.start();
    System.out.println(
        Arrays.toString(DuplicateRemover.removeDuplicates(Arrays.copyOf(array, array.length))));
    stopwatch.stop();
    stopwatch.showElapsedTime();
    stopwatch.reset();

    stopwatch.start();
    System.out.println(
        Arrays.toString(DuplicateRemover.removeDuplicatesBest(Arrays.copyOf(array, array.length))));
    stopwatch.stop();
    stopwatch.showElapsedTime();
    stopwatch.reset();
  }