From 3e54c2e17e7e0a46f145e6b10fee96dba29bff39 Mon Sep 17 00:00:00 2001
From: kplaczek <kplaczek@wi.ps.pl>
Date: Mon, 6 Dec 2021 18:05:48 +0100
Subject: [PATCH] 6th day 2nd part

---
 06/part2.php | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 06/part2.php

diff --git a/06/part2.php b/06/part2.php
new file mode 100644
index 0000000..29c5ae9
--- /dev/null
+++ b/06/part2.php
@@ -0,0 +1,18 @@
+<?php
+
+$input = file('input', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+$input = explode(',', $input[0]);
+
+$fishes = array_fill(0, 9, 0);
+foreach ($input as $fish) {
+    $fishes[$fish]++;
+}
+for ($i = 1; $i <= 256; $i++) {
+    $newBorns = $fishes[0];
+    for ($j = 1; $j <= 8; $j++) {
+        $fishes[$j - 1] = $fishes[$j];
+    }
+    $fishes[6] += $newBorns;
+    $fishes[8] = $newBorns;
+}
+echo array_sum($fishes); //1746710169834