public static void main(String[] args) {
		int[] one = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
		int[][] two = one2two(one, 4, 3);
		for (int i = 0; i < two.length; i++) {
			for (int j = 0; j < two[i].length; j++) {
				System.out.print(two[i][j] + "\t");
			}
			System.out.println();
		}
		one = two2one(two);
		for (int i = 0; i < one.length; i++) {
			System.out.print(one[i] + "\t");
		}
	}