From d8c28ae3c08490fbd6f80c1d53d077ec7d2155ae Mon Sep 17 00:00:00 2001
From: Alix von Schirp <github@avonschirp.bootmedia.de>
Date: Mon, 9 Dec 2024 08:10:43 +0100
Subject: [PATCH] Day 3

---
 Day 03/Part 1/index.ts | 24 ++++++++++++++++++++++++
 Day 03/Part 2/index.ts | 27 +++++++++++++++++++++++++++
 2 files changed, 51 insertions(+)
 create mode 100644 Day 03/Part 1/index.ts
 create mode 100644 Day 03/Part 2/index.ts

diff --git a/Day 03/Part 1/index.ts b/Day 03/Part 1/index.ts
new file mode 100644
index 0000000..d9f5e4b
--- /dev/null
+++ b/Day 03/Part 1/index.ts	
@@ -0,0 +1,24 @@
+import fs from 'node:fs';
+
+export default function runner(input: string) {
+  fs.readFile(`./${input}`, 'utf8', (err, data) => {
+    if (err) throw err;
+    let count = 0;
+
+    const regex = /mul\((?<a>\d{1,3}),(?<b>\d{1,3})\)/gm;
+
+    let m;
+
+    while ((m = regex.exec(data)) !== null) {
+      if (m.index === regex.lastIndex) {
+        regex.lastIndex++;
+      }
+
+      count += parseInt(m[1]??"")*parseInt(m[2]??"")
+    }
+
+
+
+    console.log(count)
+  })
+}
\ No newline at end of file
diff --git a/Day 03/Part 2/index.ts b/Day 03/Part 2/index.ts
new file mode 100644
index 0000000..7218bfc
--- /dev/null
+++ b/Day 03/Part 2/index.ts	
@@ -0,0 +1,27 @@
+import fs from 'node:fs';
+
+export default function runner(input: string) {
+  fs.readFile(`./${input}`, 'utf8', (err, data) => {
+    if (err) throw err;
+    let count = 0;
+
+    data.split("do()").forEach(value => {
+      value.split("don't()").forEach((value1, index) => {
+        if(index != 0) return
+        const regex = /mul\((?<a>\d{1,3}),(?<b>\d{1,3})\)/gm;
+
+        let m;
+
+        while ((m = regex.exec(value1)) !== null) {
+          if (m.index === regex.lastIndex) {
+            regex.lastIndex++;
+          }
+
+          count += parseInt(m[1]??"")*parseInt(m[2]??"")
+        }
+      })
+    })
+
+    console.log(count)
+  })
+}
\ No newline at end of file