c# - How to find out the duplicate characters in a string? -

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• how array of repeated characters string using linq? 3 answers

i take string integer count

int count=0; string s="wow" 

and using foreach loop count number of characters in specified string

foreach(char ch in s) {  count++ } 

so how can count characters repeated in string 'w'.

try )

string test = "aababc";         var result = test.groupby(c => c).where(c => c.count() > 1).select(c => new { charname = c.key, charcount = c.count()});