Delete repeated characters in strings in cell array

Question

I have a cell array like this :

Input = {'CEEEGH';'CCEEG';'ABCDEFF';'BCFGG';'BCDEEG';'BEFFH';'AACEGH'}

How can I delete all of the repeated characters and just keep only 1 character left in each string in the Input ? The expected output should be like this:

Output = {'CEGH';'CEG';'ABCDEF';'BCFG';'BCDEG';'BEFH';'ACEGH'}

bla · Accepted Answer · 2015-07-07 18:11:39Z

9

use :

cellfun(@unique,input,'UniformOutput',0)



ans = 

'CEGH'
'CEG'
'ABCDEF'
'BCFG'
'BCDEG'
'BEFH'
'ACEGH'

EDIT:

To conserve ordering in case the letters are not sorted, as @thewaywewalk commented, you can use:

cellfun(@(x) unique(x,'stable'),input,'UniformOutput',0)

edited Jul 7, 2015 at 18:11

answered Jul 7, 2015 at 8:38

bla

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5 Comments

hbaderts Over a year ago

Beat me to it, came up with exactly the same.

Robert Seifert Over a year ago

Best way to go, but I'd optionally consider the 'stable' property of unique to keep the order in case the letters of the strings are not sorted.

sco1 Over a year ago

@thewaywewalk How do you specify name-value pairs to function handles? I don't think I've seen it done before and the function handle documentation is pretty sparse.

Robert Seifert Over a year ago

@excaza just use cellfun(@(x) unique(x,'stable'),input,'UniformOutput',0) - directly in the handle is not possible, that's right.

sco1 Over a year ago

@thewaywewalk darn, I was hoping for some new syntactic sugar :)

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