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How do I insert a column with zeros in the second column of a mxn matrix?

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Hello, I would like to insert a column with zeros in the second column of a (mxn) matrix, after which the matrix would be a mx(n+1) matrix. It would be really grateful, if someone could help me on this. Thank you.

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Accepted Answer

Mischa Kim
Mischa Kim on 10 Nov 2017
Edited: Mischa Kim on 10 Nov 2017
Brute force:
A = [1 2 3; 4 5 6; 7 8 9]
A = [zeros(size(A,1),1) A];
A(:,[1 2]) = A(:,[2 1])

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