Inserting one character many times into a string

2016 12 27
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更新时间：2016 12 27
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I have a string with a bunch of words separated by commas
S='Apples,Oranges,January,February,...'
I get a vector with the placement of all the commas with
commas=strfind(s,',');
how do i place a character before every comma in the string, so it will come out like
Snew='Apples2,Oranges2,January2,February2,...'

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Stephen23
Stephen23 2016-12-27
编辑：Stephen23 2016-12-27

0 个投票

You can simply use strrep:
>> S = 'Apples,Oranges,January,February,...';
>> strrep(S,',','2,')
ans = Apples2,Oranges2,January2,February2,...

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