private static List<String> find(List<String> unordered, int from, int to) {
        if (from < unordered.size() / 2) {
            PriorityQueue<String> queue = new PriorityQueue<>(unordered);

            for (int i=0; i<from; i++) queue.remove();

            List<String> result = new ArrayList<>();
            for (int i=from; i<to; i++) {
                result.add(queue.remove());
            }
            return result;
        }

        PriorityQueue<String> queue = new PriorityQueue<>(unordered.size(), ((Comparator<String>)String::compareTo).reversed());
        queue.addAll(unordered);

        for (int i=unordered.size()-1; i>=to; i--) queue.remove();

        List<String> result = new ArrayList<>();
        for (int i=to-1; i>=from; i--) {
            result.add(queue.remove());
        }
        Collections.reverse(result);
        return result;
    }