How to Find Index of Character if our string contain duplicate Character

[Sandhya_Gajare]

How to Find Index of Character if our string contain duplicate Character
Ex:String Saaannndhya

How to Find index of ecah a,and each n

[THIRU_NANI (NaNi)]

Hey!

Have a view on this thread

Count of character duplicates in a string

Hi, Example. String is “abcdab”. So here a and b are duplicates and has occurred twice. C and d are present only once. So I need to display like a=2, b=2, c=1, d=1. How to do this? Thanks in advance.

Regards,
NaNi

[Sandhya_Gajare]

I need index of duplicate character

[Sandhya_Gajare]

not count of duplicate character

[kumar.varun2 (Varun Kumar)]

Hi @Sandhya_Gajare

Try this approach

Str.Distinct.Where(Function(x) Str.Count(Function(y) y.Equals(x)) >1).ToDictionary(Function(k) k.ToString, Function(v) Regex.Matches(Str, v).Cast(Of Match).Select(Function(x) x.Index).toArray)

xaml for reference

IndexOfDuplicateCharacters.xaml (5.1 KB)