MATLAB: How to create a matrix of size N×N that has ones in the border and zeros inside

Question

Create a matrix of size N×N that has ones in the border and zeros inside.

For example, if N=3 the matrix can be created with

>> A=ones(3,3);

 A(2,2)=0
A =
     1     1     1
     1     0     1
     1     1     1

Make this construction depend on N and work for any positive integer N≥2.

Answer 1

function A = oneZeroMatrix(N)
A = zeros(N);
A([1 end],:)=1;
A(:,[1 end])=1;
end
%  and then
N = 5;
A = oneZeroMatrix(N);