krzysiej/advent_of_code_2021
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4th day

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kplaczek
2021-12-04 10:31:35 +01:00
parent d09dcfb2b4
commit fd05fbc8e5
6 changed files with 731 additions and 3 deletions
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2
03/part1.php
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@@ -1,7 +1,7 @@
<?php
$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$input = array_map(fn($line) => str_split($line), $input);
$input = array_map('str_split', $input);
$gamma = $epsilon = [];
for ($i = 0; $i < count($input[0]); $i++) {
$bit = (int) (array_sum($column = array_column($input, $i)) >= ceil(count($column) / 2));

2
03/part2.php
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@@ -1,7 +1,7 @@
<?php
$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
$input = array_map(fn($line) => str_split($line), $input);
$input = array_map('str_split', $input);
$o2 = $co2 = $input;