repeated characters in string

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Ebtesam Almansor
Ebtesam Almansor 2016-10-13
回答： Gautam Mohan 2016-10-18
Hi there, I want to delete any character which repeated more than 3 in string I have this code which delete all repatriation Input = {'CEEEGH';'CCEEG';'ABCDEFF';'BCFGG';'BCDEEG';'BEFFH';'AACEGH'}
cellfun(@unique,Input,'UniformOutput',0)
  2 个评论
James Tursa
James Tursa 2016-10-13
Delete characters that repeat more than 3 times total, or more than 3 times in a row?
Jos (10584)
Jos (10584) 2016-10-13
What is the output supposed to look like?

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回答（1 个）

Gautam Mohan
Gautam Mohan 2016-10-18
Hi Ebtesam,
If you want to delete any character which is repeated three or more times in a row, you can substitute the @unique function in your cellfun() with a regexp that searches for 3+ character matches and replaces them with nothing:
f = @(s) regexprep(s, '(\S)\1\1+', '');
cellfun(f,Input,'UniformOutput',0)
If you need to eliminate characters that occur 3 or more times throughout the whole string, I would recommend writing a separate function that accomplishes that goal and then applying it to each string using cellfun().
Hope this helps!

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