}
  });

  $("#searchOptionsClearButton").on("click", function(e) {
    e.preventDefault();
    $("#labelTypeSearchOption").prop("selectedIndex", -1);
    $("#langSearchOption").prop("selectedIndex", 0);
    $("#sortSearchOption").prop("selectedIndex", 0);
    $("#numSearchOption").prop("selectedIndex", 0);
  });

  $result.on("mousedown", "a.link", function(e) {
    var $link = $(this);
    var docId = $link.attr("data-id");

  }

  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++) {