How to run a matlab code for all folders in a directory?

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MatLab

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I have one directory with many folders. Each folder contains a .txt file (eg, file1 contain number1.txt, file2 contain number2.txt etc). these files has 4 columns with double numbers.

Also I have, outside of this directories one matlab code that reads the .txt file, makes calculations and write a file with the results.

Is there a way to run tha matlab code for all the folders with automated manner? I mean to run the code with an easy way, and not running the matlab code one by one for each folder?

What I have tried:

I found this but no use:

addpath('mycode.m')
dirContent=dir(); % get content of current directory
dirContent(~[dirContent.isdir])=[]; % delete entries that are no folders
dirContent(1:2)=[]; % delete '.' and '..' directory
folders={dirContent.name} % get folder names
for dirNr=1:numel(folders)
    cd(folders{dirNr}); % change dir to specified folder
    mycode();
    cd ..; % go back up a level
end