Accessing surrounding elements in an array

I have been given a random square matrix and each element in the matrix has 8 surrounding elements called their "neighbors". I am struggling to write code on how to access these neighbors. For this matrix if i was to access the neighbors of A(3,2) the the neighbors are the 8 surrounding elements. If it was A(1,1) the neighbors would be A(2,1) A(2,2) A(1,2) A(5,1) A(1,5) A(2,5) A(5,2) and A(5,5). Any help would be appreciated.

A= 1 2 1 1 1
   1 2 0 0 2
   1 2 0 0 1
   0 0 2 0 1
   1 2 1 1 1

Answer 1

[TADA]

https://www.mathworks.com/matlabcentral/fileexchange/29330-neighbour-points-in-a-matrix