From: Stephen Fickas <fickas@...>
Date: 2008-03-07T04:01:47+09:00
Subject: Sequence reduction

I'd like to take a string like that below

"0011122234667889"

and reduce to

"012346789"

I can see ways to do it for a single digit, but
not all in one fell swoop:

"0011122234667889".gsub(/1{2,}/, "1") #reduce seq (2 or more) of 1s to 
single 1


"0011122234667889".gsub(/1+/, "1") #1 or more 1s to single 1

Thanks for any help.

Steve