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: Wrong Answer)

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int H;
        int W;
        while ((H = scanner.nextInt()) != 0 && (W = scanner.nextInt()) != 0) {
            for (int h = 0; h < H; h++) {
                if (h == 0 || h == H-1) {
                    for (int w = 0; w < W; w++) {
                        System.out.print('#');
                    }
                } else {
                    for (int w = 0; w < W; w++) {
                        char c = ' ';
                        if (w == 0 || w == W-1) c = '*';
                        System.out.print(c);
                    }
                }
                System.out.println("");
            }
            System.out.println("");
        }
    }
}