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how to sort

by Anonymous Monk
on Sep 13, 2013 at 13:03 UTC ( #1053920=perlquestion: print w/replies, xml ) Need Help??
Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

i have three arrays:

@arr_thumbnail

@arr_url

@arr_score

they are in sequential order, eg, The thumbnail $arr_thumbnail[5] has a target of $arr_url[5] with a score of $arr_score[5].

I want to sort by "score", while the corresponding thumbnail and url will still be linked to the score. I know it would be very easy if i'm using a sql table, but it seems too overkill , are there any way to sort it without using sql?

Replies are listed 'Best First'.
Re: how to sort
by Corion (Pope) on Sep 13, 2013 at 13:06 UTC

    Sort the indices, not the arrays themselves:

    my @indices= 0..$#arr_score; @indices= sort { $arr_score[ $a ] <=> $arr_score[ $b ] } @indices; for my $i (@indices) { print "$arr_thumbnail[ $i ] - $arr_url[ $i ] - $arr_score[ $i ]\n" +; };

    Alternatively, restructure your data into hashes, and sort that array.

Re: how to sort
by glenn (Scribe) on Sep 13, 2013 at 14:01 UTC
Re: how to sort
by Anonymous Monk on Sep 13, 2013 at 16:31 UTC
    Make one array containing hashrefs with three keys: thumbnail, url, and score. Sort this array. Keeps them all together.
Re: how to sort
by Marshall (Abbot) on Sep 13, 2013 at 13:40 UTC
    I would suggest:
    http://search.cpan.org/~adamk/List-MoreUtils-0.33/lib/List/MoreUtils.pm

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