Excel : How to merge two dynamic arrays into one dynamic array, with alternating rows?

Question

I have two dynamic arrays, A1# and B1#. I want to combine them into a dynamic array, C1#, like so:

Column A	Column B	Column C
x	4	x
y	5	4
z	6	y
		5...

Currently, I am using the solution provided via WeAreOne's answer to this , of which I have also seen a few different similar answers:

=IF(ISEVEN(ROW())=FALSE,INDEX($A$1:$A$3,ROUND((ROWS($A$1:A1)/2),0)),INDEX($B$1:$B$3,ROUND((ROWS($B$1:B1)/2),0)))

(entered into C1 and dragged down).

However, the arrays I am merging are often changing length drastically, and so I am looking for the neater solution of returning a dynamic array, rather than dragging down my current formula in anticipation of the merged array's length and also having to alter the references to the initial arrays.

Answer 1

Using TOCOL()

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• Formula used in cell C2

=DROP(TOCOL(A:B,3),2)

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As Ike Ma'am mentioned in comments, you can use it this way as well,

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• Formula used in cell C2

=TOCOL(A2#:B2#,3)

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