Replace character with another

2020 12 6
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更新时间：2020 12 7
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Hello.
Which command should I use in order to replace one character with another?
(For example in the word: Big, I would like to replace character i with a.)

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Walter Roberson
Walter Roberson 2020-12-6
Ran in:

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Ran in:
S = 'Big'
S = 'Big'
S(S == 'i') = 'a'
S = 'Bag'
T = 'Big'
T = 'Big'
T = strrep(T, 'i', 'a')
T = 'Bag'
U = 'Big'
U = 'Big'
U = regexprep(U, 'i', 'a')
U = 'Bag'

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Ameer Hamza
Ameer Hamza 2020-12-6
V = 'Big';
V = replace(V, 'i', 'a')
Ivan Mich
Ivan Mich 2020-12-6
Ok one more question . If i want to replace more than onre characters (for example, O with e), How could I modify the previous command?
I have tried ths but it is no use:
regexprep(V,{'i','a'},{'O','e'});
Stephen23
Stephen23 2020-12-6
Ran in:
Ran in:
str = 'Oil';
out = regexprep(str,{'i','O'},{'a','e'})
out = 'eal'
Ivan Mich
Ivan Mich 2020-12-6
i have tried this :
oo=regexprep((h),{'A','i'},{'O','e'}); ,
where h is 20x1 cell, and it is not working. I mean some characters not replaced
Walter Roberson
Walter Roberson 2020-12-6
Keep in mind that regexprep() is case sensitive by default.
Ameer Hamza
Ameer Hamza 2020-12-7
Note that, regexprep() might create "unexpected" result, for example,
>> out = regexprep(str,{'i','a'},{'a','e'})
out =
'Oel'
Depending on what you want, this might be the required outcome. But in such situation, I prefer replace()
>> out = replace(str,{'i','a'},{'a','e'})
out =
'Oal'

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