How to add zeros diagonally in a matrix?

I am having a 4*5 matrix. Now, I need to add '0' diagonally and convert the matrix into 5*5. Thank you in advance.

Example:

A=[2 2 1 3 2

1 3 3 1 2

3 1 4 4 1

2 2 1 3 3]

Expected output:

B=[ 0 2 1 3 2

2 0 3 1 2

1 3 0 4 1

3 1 4 0 3

2 2 1 3 0]

Answer 1

[Stephen23]

A = [2,2,1,3,2;1,3,3,1,2;3,1,4,4,1;2,2,1,3,3]

A = 4×5

2 2 1 3 2 1 3 3 1 2 3 1 4 4 1 2 2 1 3 3

S = size(A)+[1,0];
B = zeros(S);
B(~eye(S)) = A

B = 5×5

0 2 1 3 2 2 0 3 1 2 1 3 0 4 1 3 1 4 0 3 2 2 1 3 0

[ASHA PON]

Thank you for the reply. This is what i needed.

Answer 2

[Jiri Hajek]

Hi, MATLAB has functions that can extract upper and lower triangular parts of a matric, rest is just adding them into a zero pre-allocated matrix B:

A = randn(4)
Au = triu(A);
Al = tril(A);
B = zeros(5);
B(1:4,2:end) = Au;
B(2:end,1:4) = B(2:end,1:4)+Al

[ASHA PON]

Thank you for the reply. But i am getting error in matrix dimension mismatch.