MATLAB: How do i manipulate matrix in form given below?

matrix manipulation

1 2; 3 4; 5 6; 7 8;

1 2 3 4; 5 6 7 8;

A=[1 2; 3 4; 5 6; 7 8]
BB=reshape(A',4,[])'

B=[reshape(A(:,:,1)',1,16);reshape(A(:,:,2)',1,16)]

Use the reshape function:

A=[1 2; 3 4; 5 6; 7 8];
B = reshape(A', 1, [])
B =
       1     2     3     4     5     6     7     8