From a87512fbf2d8a6ccadb5be25cf351c83685833ea Mon Sep 17 00:00:00 2001 From: Yanick Champoux Date: Fri, 2 Dec 2022 10:35:31 -0500 Subject: [PATCH] 2022 02 --- 2022/02/part1.js | 58 ++++++++++++++++++++++++++++++++++++++++++++++++ 2022/02/test.js | 28 +++++++++++++++++++++++ 2 files changed, 86 insertions(+) create mode 100644 2022/02/part1.js create mode 100644 2022/02/test.js diff --git a/2022/02/part1.js b/2022/02/part1.js new file mode 100644 index 0000000..b95d356 --- /dev/null +++ b/2022/02/part1.js @@ -0,0 +1,58 @@ +import * as R from "remeda"; +import { test, expect } from "vitest"; +import fs from "fs-extra"; +import path from 'path'; + +import { spy } from '../01/main.js'; + +export const sampleInput = `A Y +B X +C Z`; + +export const puzzleInput = + fs.readFileSync( path.join( path.dirname(import.meta.url), "input").replace('file:',''), "utf8"); + +const playMap = { + X: 'A', // rock + Y: 'B', // paper + Z: 'C', // scissors +} + +export const parseInput = R.createPipe( + text => text.split("\n"), + R.map( entry => entry.split(' ') ), + R.map( ([a,b]) => [a,playMap[b]] ), +) + + +const playScore = { + A: 1, + B: 2, + C: 3, +}; + +const draw = 3; +const lost = 0; +const win = 6; + +const outcome = ( opponent, me ) => { + if( opponent === me ) return draw; + if( opponent === 'A' ) { + return me === 'C' ? lost : win; + } + if( opponent === 'B' ) { + return me === 'A' ? lost : win; + } + return me === 'B' ? lost : win; +} + +export const mapScores = ([opponent,me]) => [ outcome(opponent,me), playScore[me] ]; + +export const solutionPart1 = R.createPipe( + parseInput, + R.filter( ([a]) => a ), // remove last line + R.map( mapScores ), + R.map( R.sumBy(R.identity) ), + R.sumBy(R.identity) +); + diff --git a/2022/02/test.js b/2022/02/test.js new file mode 100644 index 0000000..e59f035 --- /dev/null +++ b/2022/02/test.js @@ -0,0 +1,28 @@ +import { test, expect } from "vitest"; + +import { expectSolution } from '../01/main.js'; +import { parseInput, sampleInput, puzzleInput, mapScores, solutionPart1 } from './part1.js'; + +test( "input parsing", () => { + expect(parseInput(sampleInput)).toEqual([['A','B'],['B','A'],['C','C']]); +}); + +test( "mapScore", () => { + expect( mapScores(['A','B']) ).toEqual([6,2]); + expect( mapScores(['B','A']) ).toEqual([0,1]); + expect( mapScores(['C','C']) ).toEqual([3,3]); +}); + +test( "part 1, sample", () => { + expect( + solutionPart1(sampleInput) + ).toEqual(15) + +}); + +test("part 1", () => { + expectSolution(solutionPart1(puzzleInput)).toEqual(12458); +}); + +test.todo("part 2", () => { +});