Reverse Rekursiv

    public static int[] reverseOrder(int[] array) {

        return swap(array, array.length, 0);
    }

    public static int[] swap(int[] array, int length, int pos) {

        if (pos * 2 < length) {
            int help;

            help = array[pos];
            array[pos] = array[length - 1 - pos];
            array[length - 1 - pos] = help;

            swap(array, length, pos + 1);
        }

        return array;
    }