Update stuff

data/Y21/day2/Day2.php

@@ -21,11 +21,9 @@ final class Day2 extends Solution
         $horizontal = 0;
 
         foreach ($data as $current) {
-            /**
-             * @var string $direction
-             * @var int    $distance
-             */
             [$direction, $distance] = explode(' ', $current);
+            $direction = (string) $direction;
+            $distance = (int) $distance;
 
             match ($direction) {
                 'forward' => $horizontal += $distance,
@@ -46,11 +44,9 @@ final class Day2 extends Solution
         $horizontal = 0;
 
         foreach ($data as $current) {
-            /**
-             * @var string $direction
-             * @var int    $distance
-             */
             [$direction, $distance] = explode(' ', $current);
+            $direction = (string) $direction;
+            $distance = (int) $distance;
 
             // Can't use 'match' here because of the multiple expressions for 'forward'.
             switch ($direction) {

data/Y21/day7/Day7.php

@@ -52,6 +52,10 @@ final class Day7 extends Solution
             }
         }
 
+        if (empty($fuelPerPosition)) {
+            return -1;
+        }
+
         return (int) min($fuelPerPosition);
     }
 }

data/Y21/day8/Day8.php

@@ -40,7 +40,7 @@ final class Day8 extends Solution
     }
 
     #[\Override]
-    public function part2(array $data): int|string
+    public function part2(array $data): int
     {
         $sequences = [];
 

data/Y23/day2/Day2.php

@@ -69,7 +69,7 @@ final class Day2 extends Solution
     }
 
     /**
-     * @return array<int, array<int, string>>
+     * @return array{string, non-empty-list<string>}
      */
     private function getHand(string $line): array
     {

data/Y23/day3/Day3.php

@@ -30,6 +30,17 @@ final class Day3 extends Solution
                 $numbers = $this->checkLocation($row, $col);
                 $top = (int) $this->processNumbers($numbers['top'], sum: true);
                 $bottom = (int) $this->processNumbers($numbers['bottom'], sum: true);
+                if ($numbers === []) {
+                    continue;
+                }
+
+                if (empty($numbers['left'])) {
+                    continue;
+                }
+
+                if (empty($numbers['right'])) {
+                    continue;
+                }
 
                 $score += $top + $bottom + max($numbers['left']) + max($numbers['right']);
             }
@@ -54,6 +65,18 @@ final class Day3 extends Solution
 
                 $top = (array) $this->processNumbers($numbers['top']);
                 $bottom = (array) $this->processNumbers($numbers['bottom']);
+                if ($numbers === []) {
+                    continue;
+                }
+
+                if (empty($numbers['left'])) {
+                    continue;
+                }
+
+                if (empty($numbers['right'])) {
+                    continue;
+                }
+
                 $left = max($numbers['left']);
                 $right = max($numbers['right']);
 
@@ -81,7 +104,7 @@ final class Day3 extends Solution
         if ($numbers[0] !== 0 && $numbers[1] === 0 && $numbers[2] !== 0) {
             $result[] = $numbers[0];
             $result[] = $numbers[2];
-        } else {
+        } elseif ($numbers !== []) {
             $result[] = max($numbers);
         }
 
@@ -127,7 +150,7 @@ final class Day3 extends Solution
         return $numbers;
     }
 
-    private function getNumber(int $row, int $col, string $direction = null): ?string
+    private function getNumber(int $row, int $col, ?string $direction = null): ?string
     {
         $number = $this->matrix[$row][$col] ?? null;
 

data/Y23/day5/Day5.php

@@ -2,7 +2,9 @@
 
 namespace trizz\AdventOfCode\Y23;
 
-final class Day5 extends \trizz\AdventOfCode\Solution
+use trizz\AdventOfCode\Solution;
+
+final class Day5 extends Solution
 {
     public static null|int|string $part1ExampleResult = 35;
 
@@ -47,6 +49,10 @@ final class Day5 extends \trizz\AdventOfCode\Solution
             $locations[$seed] = $location;
         }
 
+        if ($locations === []) {
+            return -1;
+        }
+
         return min($locations);
     }
 
@@ -97,7 +103,7 @@ final class Day5 extends \trizz\AdventOfCode\Solution
             }
 
             if (!empty($line) && !str_contains($line, ':')) {
-                [$destinationRange, $sourceRangeStart, $rangeLength] = array_values(array_map('intval', explode(' ', $line)));
+                [$destinationRange, $sourceRangeStart, $rangeLength] = array_map('intval', explode(' ', $line));
                 $this->maps[$currentMap][] = [
                     'destinationRange' => $destinationRange,
                     'sourceRangeStart' => $sourceRangeStart,

data/Y24/day1/Day1.php

@@ -7,10 +7,14 @@ use trizz\AdventOfCode\Solution;
 final class Day1 extends Solution
 {
     public static null|int|string $part1ExampleResult = 11;
-    public static null|int|string $part1Result = 1882714;
-    public static null|int|string $part2ExampleResult = 31;
-    public static null|int|string $part2Result = null;
 
+    public static null|int|string $part1Result = 1882714;
+
+    public static null|int|string $part2ExampleResult = 31;
+
+    public static null|int|string $part2Result = 19437052;
+
+    #[\Override]
     public function part1(array $data): int
     {
         [$listLeft, $listRight] = $this->getList($data);
@@ -23,13 +27,14 @@ final class Day1 extends Solution
         return $score;
     }
 
+    #[\Override]
     public function part2(array $data): int
     {
         $score = 0;
         [$listLeft, $listRight] = $this->getList($data);
 
         foreach ($listLeft as $index => $left) {
-            $right = count(array_filter($listRight, fn ($x) => $x === $left));
+            $right = count(array_filter($listRight, fn ($x): bool => $x === $left));
             if ($right > 0) {
                 $score += $left * $right;
             }