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Re: how do I sort numerically on sections of data that is alphanumeric

by Brovnik (Hermit)
on Jun 26, 2001 at 23:44 UTC ( #91729=note: print w/ replies, xml ) Need Help??


in reply to how do I sort numerically on sections of data that is alphanumeric

Or, there is the Schwartzian Transform.

# array is in @sorted my @sorted = map {$_->[0] } sort {$a->[2] <=> $b->[2] or substr($a->[3],1) <=> substr($b->[3],1)} map {[$_,split)] } @unsorted;
Note: If the 'A' in column 3 is always 'A' and the columns are null padded, then you don't need the substr and can use
sort { $a->[2] <=> $b->[2] or $a->[3] cmp $b->[3] }
Note the switch to cmp since this now a string.
--
Brovnik


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