day 6

.gitignore

@@ -2,3 +2,7 @@ node_modules
 .pls_cache/
 .perl-version
 pnpm-lock.yaml
+*_BACKUP_*
+*_BASE_*
+*_LOCAL_*
+*_REMOTE_*

2022/06/part1.js

@@ -0,0 +1,22 @@
+import * as R from "remeda";
+import { readFile } from "../05/part1.js";
+
+export const puzzleInput = readFile(import.meta.url, "input");
+
+export default function (code) {
+  const size = 4;
+  let index = size;
+
+  while (true) {
+    if (
+      R.pipe(
+        code,
+        (c) => c.substr(index - size, size).split(""),
+        R.uniq,
+        (c) => c.length
+      ) === size
+    )
+      return index;
+    index++;
+  }
+}

2022/06/part2.js

@@ -0,0 +1,19 @@
+import * as R from "remeda";
+
+export default function (code) {
+  const size = 14;
+  let index = size;
+
+  while (true) {
+    if (
+      R.pipe(
+        code,
+        (c) => c.substr(index - size, size).split(""),
+        R.uniq,
+        (c) => c.length
+      ) === size
+    )
+      return index;
+    index++;
+  }
+}

2022/06/test.js

@@ -0,0 +1,37 @@
+import { test, expect, describe } from "vitest";
+
+import { expectSolution } from "../01/main.js";
+import part1, { puzzleInput } from "./part1.js";
+import part2 from "./part2.js";
+
+describe("part 1", () => {
+  test("samples", () => {
+    expect(part1("mjqjpqmgbljsphdztnvjfqwrcgsmlb")).toEqual(7);
+
+    Object.entries({
+      bvwbjplbgvbhsrlpgdmjqwftvncz: 5,
+      nppdvjthqldpwncqszvftbrmjlhg: 6,
+      nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg: 10,
+      zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw: 11,
+    }).forEach(([code, index]) => expect(part1(code)).toEqual(index));
+  });
+  test("solution", () => {
+    expectSolution(part1(puzzleInput)).toEqual(1640);
+  });
+});
+
+describe("part 2", () => {
+  test("samples", () => {
+    expect(part2("mjqjpqmgbljsphdztnvjfqwrcgsmlb")).toEqual(19);
+
+    Object.entries({
+      bvwbjplbgvbhsrlpgdmjqwftvncz: 23,
+      nppdvjthqldpwncqszvftbrmjlhg: 23,
+      nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg: 29,
+      zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw: 26,
+    }).forEach(([code, index]) => expect(part2(code)).toEqual(index));
+  });
+  test("solution", () => {
+    expectSolution(part2(puzzleInput)).toEqual(3613);
+  });
+});