awk opposite of split

Question

what would be an opposite of split() in awk? Imagine I have array containig characters/integers.

What I\'ve tried:

color =          


        

Answer 1

Using GNU awk 4.1

#!/usr/bin/awk -f
@include "join"
BEGIN {
   split("#FFFF00", a, "")
   print join(a, 1, length(a), SUBSEP)
}

https://stackoverflow.com/questions/16529716#16529730