class ArrayPrinter {
	public static void main(String [] args) {
		int [] arr = {10, 20, 30, 40};

		print(arr);
	}

	static void print(int [] array) {print(array, 0, array.length-1);}

	static void print(int [] array, int first, int last) {
		if (first > last) return;

		System.out.println(array[first]);
		print(array, first+1, last);
	}
}