How do I insert one array into another?

I have two arrays with elements of type double. I want to insert the 1st column of array 2 after the 1st column of array 1, the 2nd column of array 2 after the 2nd column of array 1, and so on. How do I do this?

Answer 1

[Chunru]

a = reshape(1:12, 3, 4)

a = 3×4

1 4 7 10 2 5 8 11 3 6 9 12

b = reshape(13:24, 3, 4)

b = 3×4

13 16 19 22 14 17 20 23 15 18 21 24

% You stack a and b, then reshape it
a = reshape([a; b], 3, 8)

a = 3×8

1 13 4 16 7 19 10 22 2 14 5 17 8 20 11 23 3 15 6 18 9 21 12 24