take a part from name

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Ayman Mounir
Ayman Mounir 2020-12-23
评论： Ayman Mounir 2020-12-23
Hello everyone;
I have a file name such as file.name='AA_BB_CC12_DD' ; and I want to extract 'CC12' part, but the location of 'CC12' can be in the first part of the file.name or at the end in addition, it could combined with more than one number digit for expample: it can be 'CC5555' or 'CC1'.
Thanks in advance.
Regards,

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Ive J
Ive J 2020-12-23
编辑：Ive J 2020-12-23
If the structure of your string always conforms to the above leading/trailing underlines, you can use regexp:
str = 'CC5_ts1_CC534_CC322_F4324_CC1_U84';
regexp(str,'(?<=(_|^))CC\d+', 'match')
1×4 cell array
{'CC5'} {'CC534'} {'CC322'} {'CC1'}

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