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

Here is a way with POSIX Awk:

br = "red,orange,yellow,green,blue"
ch = split(br, de, ",")
print "original: " br
printf "joined: "
for (ec in de) printf ec == ch ? de[ec] "\n" : de[ec] "-"

Output:

original: red,orange,yellow,green,blue
joined: red-orange-yellow-green-blue