}

  private static void insertRandomly(
      ArrayList<Integer> elements, MinMaxPriorityQueue<Integer> q, Random random) {
    while (!elements.isEmpty()) {
      int selectedIndex = random.nextInt(elements.size());
      q.offer(elements.remove(selectedIndex));
    }
  }

  private ArrayList<Integer> createOrderedList(int size) {
    ArrayList<Integer> elements = new ArrayList<>(size);
    for (int i = 0; i < size; i++) {