From d7ed94345981b81fd3b57fb612e42ee16d210a38 Mon Sep 17 00:00:00 2001
From: Tim Kurvers <tim@moonsphere.net>
Date: Sun, 22 Dec 2024 17:10:04 +0100
Subject: [PATCH] feat(js): add solutions for 2024 day 22 part 1

---
 js/src/2024/22/index.js       | 30 ++++++++++++++++++++++++++++++
 puzzles/2024/22/examples.yaml |  7 +++++++
 2 files changed, 37 insertions(+)
 create mode 100644 js/src/2024/22/index.js
 create mode 100644 puzzles/2024/22/examples.yaml

diff --git a/js/src/2024/22/index.js b/js/src/2024/22/index.js
new file mode 100644
index 0000000..7ebebe2
--- /dev/null
+++ b/js/src/2024/22/index.js
@@ -0,0 +1,30 @@
+import { mod, solution } from '../../utils/index.js';
+
+const parse = (input) => input.trim().split('\n').map(Number);
+
+const prune = (value) => mod(value, 16777216);
+
+const mix = (value, secret) => value ^ secret;
+
+const next = (value) => {
+  let result = prune(mix(value * 64, value));
+  result = prune(mix((result / 32) | 0, result));
+  result = prune(mix(result * 2048, result));
+  return result;
+};
+
+export const partOne = solution((input) => {
+  const numbers = parse(input);
+
+  let sum = 0;
+  for (const number of numbers) {
+    let result = number;
+    for (let i = 0; i < 2000; ++i) {
+      result = next(result);
+    }
+    sum += result;
+  }
+  return sum;
+});
+
+// TODO: Ain't nobody got time for part two ;)
diff --git a/puzzles/2024/22/examples.yaml b/puzzles/2024/22/examples.yaml
new file mode 100644
index 0000000..7e0dfd9
--- /dev/null
+++ b/puzzles/2024/22/examples.yaml
@@ -0,0 +1,7 @@
+part-one:
+  - input: |
+      1
+      10
+      100
+      2024
+    answer: 37327623