From db1e4575c7b430e0a88dbbe51de5618919ad6d05 Mon Sep 17 00:00:00 2001
From: Clement Desmidt <clement@desmidt.fr>
Date: Mon, 11 Dec 2023 14:43:47 +0100
Subject: [PATCH] :tada: Starts day 1

---
 .gitignore       |  1 +
 add              | 19 +++++++++++++++++++
 day_1/part_1.php | 12 ++++++++++++
 3 files changed, 32 insertions(+)
 create mode 100644 .gitignore
 create mode 100755 add
 create mode 100644 day_1/part_1.php

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a09c56d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/.idea
diff --git a/add b/add
new file mode 100755
index 0000000..df5c3ec
--- /dev/null
+++ b/add
@@ -0,0 +1,19 @@
+#!/usr/bin/zsh
+
+SCRIPT_PATH="$( cd "$(dirname "$0")" ; pwd -P )"
+NUMBER=$1
+
+if [ ! -d "${SCRIPT_PATH}/day_${NUMBER}" ]; then
+  mkdir "${SCRIPT_PATH}/day_${NUMBER}"
+else
+  echo "folder ${SCRIPT_PATH}/day_${NUMBER} already exists"
+  exit
+fi
+
+cd "${SCRIPT_PATH}/day_${NUMBER}" || exit
+
+touch input.txt part_1.php part_2.php
+
+echo "DONE"
+
+exit
diff --git a/day_1/part_1.php b/day_1/part_1.php
new file mode 100644
index 0000000..2888b91
--- /dev/null
+++ b/day_1/part_1.php
@@ -0,0 +1,12 @@
+<?php
+
+$lines = array_filter(explode("\n", file_get_contents('./input.txt')), fn($line) => !empty($line));
+
+echo array_sum(array_map(
+    static function($line) {
+        $numbers = array_values(array_filter(array_map(static fn($letter) => is_numeric($letter) ? $letter : null, str_split($line))));
+
+        return (int) sprintf('%s%s', $numbers[0], array_pop($numbers));
+    },
+    $lines
+));