How do I count consecutive same values

Question

I would like formulas that count the number of consecutive occurrences in a list of values and places the amount of times it occurs in the next columns.

Here is a sp

Answer 1

I did this in long approach :)

Assuming your data is in Column A with header (meaning actual data starts in A2).
In B2 enter this formula and copy up to where your data extend:

=IF(OR(A2=A3,A1=A2),"YES","NO") 'this checks if consecutive or not

In C2 enter this formula and copy up to where your data extend:

=IF(A2=A1,C1,ROW(A2)) 'this gives identity on numbers that re-occured (eg. 4 in your example)

In D2 enter this formula and copy up to where your data extend:

=COUNTIFS(A:A,A2,B:B,B2,C:C,C2) 'finally, this gives you the values that you want.

Hope this helps you a bit.
Here's the screenshot:

Answer 2

This will do it. It assumes your values are in A2:A11. Note that the range in the formula extends to A12. This is an array formula and needs to be entered with Ctrl-Shift-Enter. Enter it in B2 and copy down:

=IF(A1=A2,B1,MATCH(FALSE,$A2:$A$12=A2,0)-1)

Answer 3

The function you are looking for is countif. It will allow you to count the values in a given range.

Count If Reference