MATLAB: Cell array converts to matrix, how

Question

I want to convert cell 'A' to a matrix 'B'.

A=

columns 1 through 10

{1×1 cell} {1×1 cell} {1×1 cell} {1×1 cell}…

columns 1 through 20

{1×1 cell} {1×1 cell} {1×1 cell} {1×1 cell}…

I want to have a 'B' as:

B =

 1 2 3 4 5 6 7 8 9 ... 20

I tried B(1)=cell2mat(A{1}), but can I avoid doing it one by one?

Thanks!

Answer 1

B = [A{:}];
B = [B{:}];