Add day 1 '22 solution

src/Solution.php

@@ -14,6 +14,11 @@ abstract class Solution
 
     public static int|string|null $part2Result = null;
 
+    /**
+     * @var bool When false, do not apply the `array_filter` function when the data is loaded.
+     */
+    public bool $filterDataOnLoad = true;
+
     /**
      * @var string[] The data to use.
      *
@@ -60,14 +65,14 @@ abstract class Solution
         if (file_exists($dataFile)) {
             $data = file_get_contents($dataFile);
             if ($data !== false) {
-                $this->data = array_filter(explode(PHP_EOL, $data));
+                $this->data = $this->filterDataOnLoad ? array_filter(explode(PHP_EOL, $data)) : explode(PHP_EOL, $data);
             }
         }
 
         if (file_exists($dataExampleFile)) {
             $data = file_get_contents($dataExampleFile);
             if ($data !== false) {
-                $this->exampleData = array_filter(explode(PHP_EOL, $data));
+                $this->exampleData = $this->filterDataOnLoad ? array_filter(explode(PHP_EOL, $data)) : explode(PHP_EOL, $data);
             }
         }
     }

src/Y22/Day1.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace trizz\AdventOfCode\Y22;
+
+use trizz\AdventOfCode\Solution;
+
+final class Day1 extends Solution
+{
+    public static int|string|null $part1ExampleResult = 24000;
+
+    public static int|string|null $part1Result = 72240;
+
+    public static int|string|null $part2ExampleResult = 45000;
+
+    public static int|string|null $part2Result = 210957;
+
+    public bool $filterDataOnLoad = false;
+
+    public function part1(array $data): int
+    {
+        return $this->calculateCalories($data)[0];
+    }
+
+    public function part2(array $data): int
+    {
+        $results = $this->calculateCalories($data);
+
+        return $results[0] + $results[1] + $results[2];
+    }
+
+    /**
+     * @param string[] $data
+     *
+     * @return int[]
+     */
+    private function calculateCalories(array $data): array
+    {
+        $results = [];
+        $tmpResult = 0;
+        foreach ($data as $value) {
+            if ($value !== '') {
+                $tmpResult += (int) $value;
+
+                continue;
+            }
+
+            $results[] = $tmpResult;
+            $tmpResult = 0;
+        }
+
+        rsort($results);
+
+        return $results;
+    }
+}