MATLAB: Reshape 3d into 2d matrix (in this way)

Question

I want to convert a 3D matrix A(:,:,1)= [1,2;3,4] A(:,:,2)= [5,6;7,8] A(:,:,3)= [9,10;11,12] into a 2D matrix A=[1,2,5,6,9,10;3,4,7,8,11,12]. Any help is appreciated, thank you in advance.

P.S. I will be working with much bigger matrices, in particular 450x450x450.

Answer 1

result = reshape(A,2,[]);