find the occurance of characters in a string using c#

Question

suppose I have the string like
string str="VAARONASSTGSO";

if the same character are appears in sequence then consider their count at once,in above string AA appears in sequence then consider their count at one.

V=1
A=3
R=1
O=2
N=1
S=2
T=1
G=1

Tapan Patel · Answer

//using Lambda string str = ABCCCDDDEFGGEEDTFF ; var charcount = str.GroupBy(x => x).Select(t => new { _char= t.Key _charCount= t.Count()}); charcount.ToList().ForEach(x => Console.WriteLine($ {x._char}-{x._charCount} ));

Vsd Vsd · Answer

but AA present in sequence so we have to consider their count at one

Manas Mohapatra · Answer

Follow below link that may help you: http://www.c-sharpcorner.com/blogs/find-the-number-of-occurrences-of-a-character-in-a-string-using-c-sharp122 string input = VAARONASSTGSO ; while (input.Length > 0) { var count = input.Count(x => x == input[0]); Console.Write(input[0] +  =  + count); input = input.Replace(input[0].ToString() string .Empty); } Console.ReadLine();