http://www.perlmonks.org?node_id=66696


in reply to Sort on boredom

Just for the heck of it: 
#!/usr/bin/perl -w
use Data::Dumper;
$Data::Dumper::Indent = 1;

@vals = qw( 1 2 3 1 3 3 3 43 bob 2 bob 6 2 );

my @sorted = 

  sort { $#$b <=> $#$a or $a cmp $b }

    keys %{{ map { @$_ = ( @$_, $_ ); $_ => 1 } @vals }};

print Data::Dumper->Dump([\@sorted], ['*sorted']);

[download]
or as a 1-liner: 
perl -le '$,=", ";print sort { $#$b <=> $#$a or $a cmp $b}'\
        -e 'keys %{{ map {@$_ = (@$_, $_); $_=>1} @ARGV}};'\
 0 _ __ 0 __ __  0 0 00 @ % $ % ^ ^_


result-> 0, __, %, $, 00, @, ^, ^_, _

[download]


p

Replies are listed 'Best First'.
(Ovid) Re(2): Sort on boredom
by Ovid (Cardinal) on Mar 23, 2001 at 23:44 UTC
    Heh. Awesome answer. You have convinced me that having temp variables can easily be clearer than an obsessive desire to eliminate "extraneous" code :)

    Cheers,
    Ovid

    Join the Perlmonks Setiathome Group or just click on the the link and check out our stats.

[reply]
      Well, it did answer your question:
      Is there any way of eliminating the temporary variable %freqs?
      But it does add as many 'intermediate' arrays as there are uniq values. I guess that's not what you had in mind. Oh, well.

      p
[reply]

In Section Meditations