On a side note, I couldn't help but notice that these lines probably aren't doing what you think:
my @sorted = join("\n", sort {$b <=> $a} @array);
print foreach @sorted;
What it looks like you want is for @sorted to be a list of your sorted values, which at the moment, it's not...
When you use
join(), it returns a single scalar with your list values delimited by the characters you specify.
Try:
my @array = qw(2aa 2ba 12kf 9cn 9vn 21sg);
my @sorted = join("\n", sort {$b <=> $a} @array);
print $#sorted; # Prints the index of the last element in the array
@sorted = sort {$b <=> $a} @array;
print $#sorted;
And you'll see what I mean.
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