sub sortArray {
   return sort @_;
}

my @a = ('e', 'd', 'c', 'b', 'a');
my @sorted = sortArray(@a);
print("@sorted\n");  # a b c d e

# Same thing.
my @sorted = sortArray('e', 'd', 'c', 'b', 'a');
print("@sorted\n");  # a b c d e