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

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)