How to force Matlab to read files in a folder serially?

Question

I have files in a folder that are numbered from writer_1 to writer_20. I wrote a code to read all the files and store them in cells. But the problem is

Answer 1

Here is a slightly different way (edited to fix bug and implement suggestion of @Divakar to eliminate for loop)

folders = dir(Path_training);
folders(ismember( {folders.name}, {'.', '..'}) ) = [];

%// Get folder numbers as cell array of strings
folder_nums_cell = regexp({folders.name}, '\d*', 'match');

%// Convert cell array to vector of numbers
folder_nums = str2double(vertcat(folder_nums_cell{:}));

%// Sort original folder array
[~,inds] = sort(folder_nums);
folders = folders(inds);