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  1. or download this
    use Sort::Key::Natural qw(natsort);
    my @sorted = natsort @data;
    
  2. or download this
    use Benchmark qw(cmpthese);
    
    ...
    K-2-D-10C
    K-2-D-10D
    ...
    
  3. or download this
    $ perl bm.pl
          Rate   sn  skn
    sn  45.0/s   -- -79%
    skn  216/s 381%   --