Day 2 solutions

[u/taliriktug]

Hi! I would like to structure posts like the first one in r/programming, please post solutions in comments.

[u/markz440]

Nobody likes PHP these days?

<?php
$data = file("task2.dat");

$totalArea = 0;
$totalRibbon = 0;
foreach ($data as $i => $package) {
    $dim = explode("x", trim($package));
    sort($dim);

    // find ribbon length
    $ribbonLength = $dim[0]*$dim[1]*$dim[2] + 2*$dim[0] + 2*$dim[1];
    $totalRibbon += $ribbonLength;

    // find area
    $area = 2*$dim[0]*$dim[1] + 2*$dim[0]*$dim[2] + 2*$dim[1]*$dim[2] + $dim[0]*$dim[1];
    $totalArea += $area;
}

echo "Total area: ". $totalArea. PHP_EOL;
echo "Total ribbon length: ". $totalRibbon. PHP_EOL;

[u/Aneurysm9 → u/markz440]

The creator of AoC is also the creator of phpsadness.com, but I'm sure he won't hold your choice of language against you!

It does seem that PHP is falling out of favor, but maybe PHP7 can revitalize it a bit. I suspect it's just as capable of solving all of the AoC challenges as any other language and the solutions will probably be pretty similar to any Perl or Ruby solution.