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.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.*;
class Main{
	public static void main(String[] args){
	int h =0;
	int w =0;
	int t =0;
	Scanner scan = new Scanner(System.in);
	ArrayList<Integer> listw = new ArrayList<Integer>();
	ArrayList<Integer> listh = new ArrayList<Integer>();
		while(scan.hasNextLine()){
			h = scan.nextInt();			
			w = scan.nextInt();
			
			if(h==0 && w==0){
				break;
			}
			else{
				listh.add(h);
				listw.add(w);
			}
		}
		
		
		
		for(int i=0;i<listh.size();i++){
			for(int ii=0;ii<listh.get(i);ii++){
				for(int iii=0;iii<listw.get(i);iii++){
					if(ii == 0 || ii ==listh.get(i)-1 || iii == 0 || iii == listw.get(i)-1){
					System.out.print("#");
					}
					else{
					System.out.print(".");
					}
					
				}
			System.out.println("");
			}
		System.out.println("");
		}
	}
}