public static void countSwaps(List<Integer> a) {
        int count = 0;
        for (int i = 0; i < a.size(); i++) {
            for (int j = 0; j < a.size() - 1; j++) {
                if (a.get(j) > a.get(j + 1)) {
                    int aux = a.get(j);
                    a.set(j, a.get(j + 1));
                    a.set(j + 1, aux);
                    count++;
                }
            }
        }
        System.out.println("Array is sorted in " + count + " swaps.");
        System.out.println("First Element: " + a.get(0));
        System.out.println("Last Element: " + a.get(a.size() - 1));
    }