perf: Merge Advent of Code year specific repos

1 files changed, 67 insertions, 0 deletions

diff --git a/2024/OCaml/lib/day_04/php/Grid.php b/2024/OCaml/lib/day_04/php/Grid.php
new file mode 100644
index 0000000..c0382df
--- /dev/null
+++ b/2024/OCaml/lib/day_04/php/Grid.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+class Grid implements Stringable
+{
+	/**
+	 * @param string[][] $data
+	 */
+	public function __construct(public array $data) {}
+
+	public function __toString(): string
+	{
+		$rowToLine = fn(array $row): string => array_reduce(
+			array: $row,
+			callback: fn(string $acc, string $character): string => $acc . $character,
+			initial: "",
+		);
+
+		return array_reduce(
+			array: $this->data,
+			callback: fn(string $acc, array $row): string => $acc . $rowToLine($row) . PHP_EOL,
+			initial: "",
+		);
+	}
+
+	public function getCharacterAtPosition(Position $position): string
+	{
+		if ($this->isInBounds($position)) {
+			return $this->data[$position->y][$position->x];
+		}
+
+		return ".";
+	}
+
+	/**
+	 * @param Position[] $positions
+	 */
+	public function getStringFromPositions(array $positions): string
+	{
+		$characters = array_map(
+			callback: fn(Position $position): string => $this->getCharacterAtPosition($position),
+			array: $positions,
+		);
+
+		$string = array_reduce(
+			array: $characters,
+			callback: fn(string $acc, string $character): string => $acc . $character,
+			initial: "",
+		);
+
+		return $string;
+	}
+
+	public function isInBounds(Position $position): bool
+	{
+		if (!array_key_exists($position->y, $this->data)) {
+			return false;
+		}
+
+		if (!array_key_exists($position->x, $this->data[$position->y])) {
+			return false;
+		}
+
+		return true;
+	}
+}