How to do this pre-allocation without loop

how to write the following pre-allocation without for-loop? i.e. using one line code?

for i = 1:size (Samples, 2) 

        for j =1:size(Samples{i},1)
          A{i}(j,500) = 0; 

        end
  end

Answer 1

[KSSV]

A = cell(size(Samples,2),1) ;
for i = 1:size (Samples, 2)
    for j =1:size(Samples{i},1)
        A{i}(j,500) = 0;
    end
end

[ML]

this is not true. say we need 2 cells (i=2) for the first one we have j rows (e.g j = 20) and for the second cell j rows (e.g j=20)

[KSSV]

Did you run it? If it throws any error, show the error. How you expect to give correct one with out knowing what is Samples size and it's class?

[ML]

If you read the question, I asked without loop. Your solution still contains the for loop which I wrote above.

You only added a line to that which preallocates the cells.