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 JavaScript (judge verdict: Accepted)

var input = require('fs').readFileSync('/dev/stdin', 'utf8');
let arr = input.split("\n");
for (let i = 0; i < arr.length; i++) {
    let Arr = arr[i].split(" ").map(Number);
    let H = Arr[0];
    let W = Arr[1];
    if (H === 0 && W === 0) break;
    let str = '';
    for (let hCount = 0; hCount < H; hCount ++) {
      for (let wCount  = 0; wCount < W; wCount ++) {
        if (hCount === 0 || hCount === H-1) {
            str += '#';
        } else {
          if (wCount === 0 || wCount === W-1) {
            str += '#';
          } else {
            str += '.';
          }
            
        }
      }
      str += '\n';
    }
    console.log(str);
}