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);
		int H;
		int W;
		int count;
		int[] detaH = new int[300];
		int[] detaW = new int[300];
		for (count = 0; true; count++) {
			H = sc.nextInt();
			W = sc.nextInt();
			if (H == 0 && W == 0) {
				break;
			}
			detaH[count] = H;
			detaW[count] = W;
		}
		for (int i = 0; i < count; i++) {
			for (int i2 = 0; i2 < detaH[i]; i2++) {
				if (i2 == 0 || i2 == detaH[i] - 1) {
					for (int i3 = 0; i3 < detaW[i]; i3++) {
						System.out.print("#");
					}
					System.out.print("\n");
				} else {
					for (int i3 = 0; i3 < detaW[i]; i3++) {
						if (i3 == 0 || i3 == detaW[i] - 1) {
							System.out.print("#");
						} else {
							System.out.print(".");
						}
					}
					System.out.print("\n");
				}
			}
			System.out.print("\n");
		}
		sc.close();
	}
}