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 sc=new Scanner(System.in);
while(true){
int h=sc.nextInt();
int w=sc.nextInt();
if(h==0&&w==0){
    break;
}
for(int i=1;i<=h;i++){
    for(int j=1;j<=w;j++){
        if(i==1||j==1||i==h||j==w){
        System.out.print("#");
        }else{
            System.out.print(".");
        }
        
    }
        System.out.println("");
}
System.out.println("");
}
sc.close();
    }
}