Scenario2

input is like this:
no,char
1,a
2,b
3,a
4,b
5,a
6,a
7,b
8,a



But the output is in this form  with row numbering of Duplicate occurence


output:

no,char,Count
"1","a","1"
"6","a","2"
"5","a","3"
"8","a","4"
"3","a","5"
"2","b","1"
"7","b","2"
"4","b","3"