how to find a string within a filename?

I have a list of filenames and want to search for specific strings within the filenames and have them printed horizontally separated by a ';'. for example I have the following filenames:

• apple.doc
• apple2.csv
• apple3.xls
• banana.doc
• banana2.csv
• banana3.xls

I only want the "apple" files and the final output should be: apple.doc; apple2.csv; apple3.doc

How do I do this?

Answer 1

[Sara]

Try looking up the strfind command.

Answer 2

[Star Strider]

Try this:

FileNames = {'apple.doc', 'apple2.csv', 'apple3.xls', 'banana.doc', 'banana2.csv', 'banana3.xls'}

NewFiles = {};
for k1 = 1:size(FileNames,2)
    A = strfind(FileNames{k1}, 'apple');
    if ~isempty(A)
        NewFiles = [NewFiles;  FileNames{k1}];
    end
end

[andrew]

I used this but it returns a double '18' how do I get the string of the doubles

Answer 3

[Jos (10584)]

NAMES = {'apple.doc', 'apple2.csv', 'TESTappleTEST.xls', 'banana.doc', 'banana2.csv', 'banana3.xls','APPL_almost.txt'}
C = regexp(NAMES, '.*apple.*', 'match') % find all names with the word apple in it.

outputstr = sprintf('%s;',C{:}) ; % concatenate them in a single row
outputstr = outputstr(1:end-1) ;  remove last semi-colon
disp(outputstr) % show