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's a solution that doesn't rely on gawk or knowing the length of the array and lets you put a separator (space in this case) string between each array element if you like:

color = "#FFFF00"
printf "color original: %s\n", color
split(color, chars, "")
joined = sep = ""
for (i=1; i in chars; i++) {
    joined = joined sep chars[i]
    sep = " "     # populate sep here with whatever string you want between elements
}
printf "color joined: %s\n", joined

I also cleaned up the incorrect use of printf and the spurious semi-colons.