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#!/usr/bin/env perl
use strict;
use warnings;
use experimental qw{ say postderef signatures state };
my @examples = (
{
lang => [ 'perl', 'c', 'python' ],
popularity => [ 2, 1, 3 ],
},
{
lang => [ 'c++', 'haskell', 'java' ],
popularity => [ 1, 3, 2 ],
},
);
for my $e (@examples) {
my @output = sort_language($e);
my $output = join ', ', map { qq{'$_'} } @output;
my $lang = join ', ', map { qq{'$_'} } $e->{lang}->@*;
my $popularity = join ', ', $e->{popularity}->@*;
say <<~"END";
Input: \@lang = ($lang)
\@popularity = ($popularity)
Output: ($output)
END
}
sub sort_language ($input) {
return map { $_->[1] }
sort { $a->[0] <=> $b->[0] }
map { [ $input->{popularity}->[$_], $input->{lang}->[$_] ] }
0 .. -1 + scalar $input->{lang}->@*;
}
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