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( #3333=superdoc: print w/replies, xml ) Need Help??
Well, here's a cut at it, even though it's not golfed yet:
sub o { my ($a, $w) = @_; my %m; @m{@$a} = (a..z); my $k = join "", keys %m; my $v = join "", values %m; map { eval "tr/$v/$k/"; $_ } sort map { eval "tr/$k/$v/"; $_ } @$w; }

-- Randal L. Schwartz, Perl hacker

update: and of course, it's doggy slow. That eval needs to be saved, like in a coderef or something.
update2: Bleh. RIght. 'a'..'z' was being presumptive that "letter" meant "letter" like I knew it. Here's the patch to make it work for larger sets, for reasonable values of work:
sub o { my ($a, $w) = @_; my %m; @m{@$a} = 1..@$a; my $k = join "", map {sprintf "\\%03o", ord $_} keys %m; my $v = join "", map {sprintf "\\%03o", $_ } values %m; map { eval "tr/$v/$k/"; $_ } sort map { eval "tr/$k/$v/"; $_ } @$w; }

In reply to Re: Golf: Arbitrary Alphabetical Sorting by merlyn
in thread Golf: Arbitrary Alphabetical Sorting by Masem

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