print "And the set contains [ { sort @a } ]\n";;
And the set contains [ brown dog fox jumps lazy over quick the the ]

printf "And the set contains [ %s ]\n", join ' ', sort @a;;
And the set contains [ brown dog fox jumps lazy over quick the the ]

print "And the set contains [ ", join( ' ', sort @a ), " ]\n";;
And the set contains [  brown dog fox jumps lazy over quick the the  ]

##</code><code>##

print "And the set contains [ @{[ sort @a ]} ]\n";;
And the set contains [ brown dog fox jumps lazy over quick the the ]