indexing data before and after sort

Hello, I need to plot data from a significant number of text files that have the same last digit in their name. My attempt is in the following code. Indexing to the sorted numeric value of the text file name alone does not suffice to get the full path of the text file. Therefore, I need to also find the corresponding non-numeric value of the text file before sorting then join the two parts to get the content of the similarly named text files. I really appreciate the help.

A = { 'C:\MATLAB\folder1_txtfilename_Num_1.txt' ,
      'C:\MATLAB\folder1_txtfilename_Num_2.txt' ,
      'C:\MATLAB\folder1_txtfilename_Num_3.txt', 
      'C:\MATLAB\folder2_txtfilename_Num_1.txt', 
      'C:\MATLAB\folder2_txtfilename_Num_2.txt', 
      'C:\MATLAB\folder2_txtfilename_Num_3.txt'};
for ii = 1:numel(A)
h1{:,ii} = strsplit(A{:,ii}, 'Num')     % seperate the text file name
txt1{:,ii} = h1{1, ii}{1, 1}            % get the ~numeric value of the text file name
txt2{:,ii} = h1{1, ii}{1, 2}            % get the numeric value of the text file name
[txt2_sorted,I2] = sort(txt2)           % get sorted array and its index
end


% find all txt files with same number in txt2_sorted: 
for ii = 1:numel(A)
I00 = txt2_sorted'
dd(ii) = cellfun ( @strcmp, I00(1), I00(ii) )
data1 = txt2_sorted(dd)
end

% find the

[dpb]

What subset of files are you looking for? What's the more general description of the wanted files as if it were simply the above as a population you could just write them explicitly so the problem must be larger in scope as is implied.

But, since we don't have a generic problem description but only an attempted solution without the problem to be solved, we don't have sufficient information.

More than likely a regular expression will work...

[Stephen23]

@Housam: it seems that you are describing your attempted solution, rather than describing what you are actually trying to achieve.

http://xyproblem.info/

https://meta.stackexchange.com/questions/66377/what-is-the-xy-problem

Most likely there are simpler ways to achieve what you need: please clearly described what the aim is, together with example input and output data.

[Housam]

Thank you. yes, Stephen, indeed there was a simpler method to solve the problem. Thankfully, I was able to find a way around it.