in reply to GOLF: Input sort list of integers, Output as [356853]

Just munging your try, I'm down to 53 chars (and it deals with 0's as well):
# 1 2 3 4 5 #2345678901234567890123456789012345678901234567890123 $;*=$:eq$_,$:=$_,print$;?'':$/,++$c,") $_-",++$;for@_

Abigail