How to concatenate matrices horizontally?

Question

I have two 3-by-3 matrices:

A= [ 1 2 3 
     1 1 1
     0 1 1] 

B= [ 1 2 1 
     1 1 1
     2 2 2]

How do I concatenate the

Answer 1

There are a few possibilities here. The easiest, and most common one:

concat = [A, B]

The following is considered more robust by some, (because one might, on accident, do concat = [A; B], which would concatenate them vertically):

concat = horzcat(A, B)