part 2

2022/03/part1.js

@@ -1,23 +1,20 @@
 import * as R from "remeda";
-import fs from 'fs-extra';
-import path from 'path';
+import fs from "fs-extra";
+import path from "path";
 
-const readFile = (year,day,file) => fs.readFileSync(
-    path.join( year, day, file ),
-  "utf8"
-);
+const readFile = (year, day, file) =>
+  fs.readFileSync(path.join(year, day, file), "utf8");
 
-export const sample = readFile('2022','03','sample');
-export const puzzleInput = readFile('2022','03','input');
+export const sample = readFile("2022", "03", "sample");
+export const puzzleInput = readFile("2022", "03", "input");
 
 export const solutionPart1 = R.createPipe(
-    text => text.split("\n"),
-    R.filter( R.identity ),
-    R.map( line => line.split('') ),
-    R.map( line => [ line, line.splice( line.length / 2 ) ] ),
-    R.map( line => R.intersection(...line) ),
-    R.map( line => line[0].charCodeAt(0) ),
-    R.map( code => code > 96 ? code - 96 : code - 38 ),
-    R.sumBy( R.identity )
+  (text) => text.split("\n"),
+  R.filter(R.identity),
+  R.map((line) => line.split("")),
+  R.map((line) => [line, line.splice(line.length / 2)]),
+  R.map((line) => R.intersection(...line)),
+  R.map((line) => line[0].charCodeAt(0)),
+  R.map((code) => (code > 96 ? code - 96 : code - 38)),
+  R.sumBy(R.identity)
 );
-

2022/03/part2.js

@@ -1,2 +1,12 @@
 import * as R from "remeda";
 
+export const solutionPart2 = R.createPipe(
+  (text) => text.split("\n"),
+  R.filter(R.identity),
+  R.map((line) => line.split("")),
+  R.chunk(3),
+  R.map((group) => group.reduce((a, b) => R.intersection(a, b))),
+  R.map((line) => line[0].charCodeAt(0)),
+  R.map((code) => (code > 96 ? code - 96 : code - 38)),
+  R.sumBy(R.identity)
+);

2022/03/test.js

@@ -1,10 +1,7 @@
 import { test, expect, describe } from "vitest";
 
-import {
-  solutionPart1,
-    sample,
-    puzzleInput,
-} from "./part1.js";
+import { solutionPart1, sample, puzzleInput } from "./part1.js";
+
 import { solutionPart2 } from "./part2.js";
 
 function expectSolution(result) {
@@ -13,17 +10,16 @@ function expectSolution(result) {
 }
 
 describe("part 1", () => {
-    test( 'sample', () => {
-        console.log(JSON.stringify(solutionPart1(sample)));
-        expectSolution(solutionPart1(sample)).toEqual(157)
-    });
+  test("sample", () => {
+    expect(solutionPart1(sample)).toEqual(157);
+  });
   test("solution", () => {
-    expectSolution(solutionPart1(puzzleInput)).toEqual('TODO');
+    expectSolution(solutionPart1(puzzleInput)).toEqual(8515);
   });
 });
 
 describe("part 2", () => {
-  test.todo("solution", () => {
-    expectSolution(solutionPart2(puzzleInput)).toEqual('TODO');
+  test("solution", () => {
+    expectSolution(solutionPart2(puzzleInput)).toEqual(2434);
   });
 });