How to re-order a string array?

currently the files are orderd like this, the value increasing by 30 each time up to 1830:

however, with the code i've used, matlab orders the files like this:

is there any way i can sort the files to match the original?

dirName = pwd;

files = dir( fullfile(dirName,'*.txt') );

files = {files.name}';

files = sortrows(files,'ascend')

Answer 1

[Stephen23]

P = pwd;
S = dir(fullfile(P,'*.txt'));
C = {S.name};
[~,X] = sort(str2double(regexp(C,'\d+','match','once')));
C = C(X);

[Paul]

Or

C = string{S.name});
[~,X] = sort(double(extractBetween(C,"_",".txt")));
C = C(X);

for those of us who can't get our minds around patterns and regexp.

Answer 2

[DGM]

Use this:

https://www.mathworks.com/matlabcentral/fileexchange/47434-natural-order-filename-sort

[james Green]

thanks that works perfectly, however this is part of an uni assignment which i can only subbmit one .m file for, so i dont think i can use this. im not very familiar with file exchange is there a way to get around this.