How can I loop all elements in a matrix from a cell array

I have a cell array where the cells are something like this: [ 92x1 double] [215x1 double] [127x1 double] [120x1 double] [ 89x1 double] ....and so on(1000 odd cells). I want to be able to extract the first n and last n elements in each of those arrays and get their means. I want all of that in one loop. I tried using a 'for' loop for this but it only gets the required elements from either the first or the last cell array and not all the cells. Im quite new to this and any help would be great! Thanks

if true
  % code
end
for i=1:nfiles,
  a{i} = diff(w{i}(:,2))./diff(w{i}(:,1));
  for k=1:numel(a{i}),

        begin_el= a{i}(1:5),
    e_elements = a{i}(end-4:end),
    end 
    end

Answer 1

[dbmn]

One suggestion is to use the running variable k in the loop

begin_el(end, :)= a{k}(1:5),
e_elements(end, :) = a{k}(end-4:end)

another suggestion would be to use a cellfun instead of the for loop.

[BoIs]

Thanks for the suggestion!

I tried cellfun and it worked perfectly