class Ideone {
 
    public static void main(String[] args) {
		final byte one = 1;
		final byte three = 3;
		final byte six = 6;
		final byte nine = 9;
		final byte zero = 0;
		final byte[][] maze = new byte[nine][nine];
		byte rand = (byte)(Math.random() * nine + one);/* get value 1 to 9 */
		System.out.println("Generating suduko maze ...");
		for(byte r = zero, c; nine > r; r ++) {
			if(three == r || six == r) {
				rand = maze[r - three][zero];
				rand = nine == rand ? one : (byte)(rand + one);
			} else {
				rand = zero < r ? maze[r - one][six] : rand;
			}
			for(c = zero; nine > c; c ++) {
				maze[r][c] = rand;
				rand = nine == rand ? one : (byte)(rand + one);
			}
		}
		System.out.println("Printing suduko maze ...");
		String ln = "\n+--+--+--+--+--+--+--+--+--+";
		System.out.print(ln);
		for(byte[] r : maze) {
			System.out.print("\n|");
			for(byte v: r) {
				System.out.printf("%2d|", v);
			}
			System.out.print(ln);
		}
		System.out.println();
    }
}
 

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