CONCATENATE rows with character for range in Excel

Question

I have a pretty long list of numbers that I would like to concatenate for a regex like this:

2323
2352
3432
…

2323|2352|3432

Now, I can obviousl

Answer 1

Typically this is a job for TEXTJOIN, available in Excel 2019 and O365.

=TEXTJOIN("|",,A1:A3)