Remove a string from another string

2021 5 6
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更新时间：2023 2 15
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I have two strings like 'bio-inspired' and 'bioinspired'. I want to essentially subtract one string from another and get '-' in the end. How can I delete all letters appearing in one string from another string? The erase function doesn't work for this case.

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KSSV
KSSV 2021-5-6
Ran in:

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Ran in:
str1 = 'bio-inspired' ;
str2 = 'bioinspired' ;
str=setdiff(str1,str2)
str = '-'

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Tejas
Tejas 2021-5-6
Great! That works for me.
Tejas
Tejas 2021-5-6
I have a problem though. This doesn't work for repeated letters. setdiff('sam','sams') gives me an empty array. Is there a way around that?
KSSV
KSSV 2021-5-6
Huumh....because s is present once in the string. Need to check other ways.
Tejas
Tejas 2021-5-6
I guess erase would work for that case. Both wouldn't work for words like 's-ams' and 'sam' to get '-s'. I'll figure something out for those cases.

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