From 9dd43be0c0671303b97d1e4a2dc1727a633a5187 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sun, 6 Dec 2020 12:57:15 +0100
Subject: 6th in JS

---
 2020/6/solve.js | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 2020/6/solve.js

(limited to '2020/6/solve.js')

diff --git a/2020/6/solve.js b/2020/6/solve.js
new file mode 100644
index 0000000..e82242a
--- /dev/null
+++ b/2020/6/solve.js
@@ -0,0 +1,26 @@
+const fs = require("fs");
+const data = fs.readFileSync("input", "utf8");
+
+function part_one()
+{
+    return data.split("\n\n").map(e => [...new Set(e.replace(/\n/g, ''))].join('').length).reduce((a, b) => a + b);
+}
+
+function part_two()
+{
+    let res = 0;
+
+    data.split("\n\n").forEach(elem => {
+        const line = elem.replace(/\n/g, '');
+        const chars = line.split('');
+        const cnt = elem.split('\n').length;
+        for (const c of new Set(line))
+            if (chars.filter(x => x == c).length == cnt)
+                res++;
+    });
+
+    return res;
+}
+
+console.log(part_one());
+console.log(part_two());
-- 
cgit v1.2.3