How about ... 

my %counter;

$counter{$_}++ while (<DATA>);

print sort {$counter{$b} <=> $counter{$a}} keys %counter;  
  
__DATA__
1    info
1    info
1    info
2    info
3    info
3    info
4    info
4    info
4    info
4    info

[download]

This increments a counter for each of the lines. Then sorts them in reverse count order.

Maybe this is close to what you want. Let us know if it needs any changes.

--
Steve Marvell

In reply to Re: wisdom needed by marvell
in thread wisdom needed: sorting an array by Anonymous Monk

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