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gav (2710)

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Hacker in NYC.

Journal of gav (2710)

Friday February 22, 2008
08:11 PM

Winter Scripting Games II

[ #35729 ]

So far not doing great, missed the deadline of the 2nd and 4th events and was too hasty in submitting the 3rd to get it right.

This quiz is a good feeler for what Perl other people write, and if you look at the difference from the official solution, Jan Dubois', and mine, there's a world of difference looking at Perl written by a non-Perl programmer. It's strange and alien looking to me, and explains why people harp on about Perl's ugliness.

Anyway here is my (fixed) solution to Advanced Event 3: Instant (Runoff) Winner:

#!usr/bin/perl -w
use strict;
use List::Util qw( sum first );

my %C; # candidates

open my $in, '<c:/scripts/votes.txt'
    or die "Can't open 'votes.txt': $!\n";

while (1) {
    while (<$in>) {
        my @vote = split /,/;
        @C{@vote} = (0) x @vote if keys %C == 0;
        $C{$_}++ for first { exists $C{$_} } @vote;
    my @c = sort { $C{$b} <=> $C{$a} } keys %C;
    my $percent = ($C{$c[0]} / (sum values %C)) * 100;
    if ($percent > 50) {
        printf "The winner is %s with %.2f%% of the vote.\n", $c[0], $percent;
    delete $C{pop @c};
    @C{@c} = (0) x @c;
    seek $in, 0, 0;

close $in;

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