Calculate Occurrence Number - Excel

Question

I have simple problem, but I\'ve not be able to get an answer from searching. I require a column to calculate the number of the nth occurrence of a value. It\'s best explained i

Answer 1

Use the following formula to generate the required series: =COUNTIF($A$1:A1,A1) and strech(copy) it in all the cells

This will generate result like this:

A   1   COUNTIF($A$1:A1,A1)
A   2   COUNTIF($A$1:A2,A2)
C   1   COUNTIF($A$1:A3,A3)
C   2   COUNTIF($A$1:A4,A4)
B   1   COUNTIF($A$1:A5,A5)
B   2   COUNTIF($A$1:A6,A6)
A   3   COUNTIF($A$1:A7,A7)
C   3   COUNTIF($A$1:A8,A8)
D   1   COUNTIF($A$1:A9,A9)
D   2   COUNTIF($A$1:A10,A10)
D   3   COUNTIF($A$1:A11,A11)
D   4   COUNTIF($A$1:A12,A12)