MATLAB: Extracting part of a string after the nth occurrence of a character

cell arrayextract stringregexp

Hello,
I have a cell array of string which looks like this:
cellArrayS = {'staticString1;staticString2;staticString3;1;nextString'; … 'staticString1;staticString2;staticString3;2;nextString;nextString'; … 'staticString1;staticString2;staticString3;3;nextString;nextString;nextString'; … 'staticString1;staticString2;staticString3;4;nextString;;;;'; … 'staticString1;staticString2;staticString3;5;nextString;nextString'};
I would like to extract all the characters after the 4th semi-column until the end of the string. The results would be as follow:
extractResults =
'nextString';
'nextString'; 'nextString';
'nextString'; 'nextString'; 'nextString';
'nextString';;;;
'nextString'; 'nextString';
I have tried looking at related example on this question, playing around with regexp, find and extractAfter but I didn’t manage to get anywhere.
Thank you very much.
Cecile

Best Answer

C = {...
'staticString1'';''staticString2'';''staticString3'';1;''nextString'';'
'staticString1'';''staticString2'';''staticString3'';2;''nextString'';''nextString'';'
'staticString1'';''staticString2'';''staticString3'';3;''nextString'';''nextString'';''nextString'';'
'staticString1'';''staticString2'';''staticString3'';4;''nextString'';;;;'
'staticString1'';''staticString2'';''staticString3'';5;''nextString'';''nextString'';'
};
T = regexp(C,'^(([^;]+;){4})(.*)$','once','tokens');
Z = cellfun(@(c)c{end},T,'uni',0);
giving:
>> Z{:}
ans = 'nextString';
ans = 'nextString';'nextString';
ans = 'nextString';'nextString';'nextString';
ans = 'nextString';;;;
ans = 'nextString';'nextString';
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