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.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int h = Integer.parseInt(scan.next());
		int w = Integer.parseInt(scan.next());		
		int i=0;
		int j=0;
		while(h!=0 && w!=0){
			for(i=0;i<h;i++){
				for(j=0;j<w;j++){
					if(i==0||j==0||i==h-1||j==w-1)
						System.out.print("#");
					else
						System.out.print(".");
				}
				System.out.println("");
			}	
			h = Integer.parseInt(scan.next());
			w = Integer.parseInt(scan.next());
                        System.out.println("");	
		}
	}
}