Problem:
Print a Frame

Draw a frame which has a height of H cm and a width of W cm. For example, the following figure shows a frame which has a height of 6 cm and a width of 10 cm.

##########
#........#
#........#
#........#
#........#
##########

Input

The input consists of multiple datasets. Each dataset consists of two integers H and W separated by a single space.

The input ends with two 0 (when both H and W are zero).

Output

For each dataset, print the frame made of '#' and '.'.

Print a blank line after each dataset.

Constraints

3 ≤ H ≤ 300

3 ≤ W ≤ 300

Sample Input

3 4
5 6
3 3
0 0

Sample Output

####
#..#
####

######
#....#
#....#
#....#
######

###
#.#
###

Solution in JAVA (judge verdict: Accepted)

import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);		

		int h[] = new int[300];
		int w[] = new int[300];
		int endIndex = 0;
		
		for (int i = 0; i < 300; i++) {
			h[i] = scan.nextInt();
			w[i] = scan.nextInt();

			if (h[i] == 0 && w[i] == 0) {
				endIndex = i;
				break;
			}
		}
		
		for (int i = 0; i < endIndex; i++) {
			for (int height = 0; height < h[i]; height++) {
				for (int width = 0; width < w[i]; width++) {
					if (height == 0 || height == h[i] - 1 || 
							width == 0 || width == w[i] - 1) {
						System.out.print("#");
					} else {
						System.out.print(".");
					}
				}
				System.out.println();
			}
			System.out.println();
		}
		
		scan.close();
	}
}