Hollow Square
Print an N×N square of # that is hollow: only the border cells are hashes, interior cells are dots.
Input: one integer N.
Output: the figure, one row per line.
Constraints:
- 1 ≤ N ≤ 100
Sample Tests
Input 1
4
Output 1
#### #..# #..# ####
Input 2
1
Output 2
#
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