From 81cd59c03af55d52f72521f0c9f58f547a944dd8 Mon Sep 17 00:00:00 2001 From: Julien Dessaux Date: Wed, 29 Mar 2023 23:30:06 +0200 Subject: 2020-14 part 2 in javascript --- 2020/14-Docking_Data/.eslintrc.json | 44 ++++++++++++++++++++++++++ 2020/14-Docking_Data/package.json | 11 +++++++ 2020/14-Docking_Data/second.js | 62 +++++++++++++++++++++++++++++++++++++ 3 files changed, 117 insertions(+) create mode 100644 2020/14-Docking_Data/.eslintrc.json create mode 100644 2020/14-Docking_Data/package.json create mode 100644 2020/14-Docking_Data/second.js diff --git a/2020/14-Docking_Data/.eslintrc.json b/2020/14-Docking_Data/.eslintrc.json new file mode 100644 index 0000000..47dd5e6 --- /dev/null +++ b/2020/14-Docking_Data/.eslintrc.json @@ -0,0 +1,44 @@ +{ + "env": { + "es2021": true, + "node": true + }, + "extends": [ + "eslint:recommended", + "plugin:node/recommended" + ], + "overrides": [ + { + "files": ["*.js"], + "rules": { + "no-constant-condition": "off" + } + } + ], + "parserOptions": { + "ecmaVersion": "latest", + "sourceType": "module" + }, + "rules": { + "indent": [ + "error", + "tab" + ], + "linebreak-style": [ + "error", + "unix" + ], + "quotes": [ + "error", + "single" + ], + "semi": [ + "error", + "always" + ], + "node/no-unsupported-features/es-syntax": [ + "error", + { "ignores": ["modules"] } + ] + } +} diff --git a/2020/14-Docking_Data/package.json b/2020/14-Docking_Data/package.json new file mode 100644 index 0000000..23be024 --- /dev/null +++ b/2020/14-Docking_Data/package.json @@ -0,0 +1,11 @@ +{ + "type": "module", + "engines": { + "node": ">=18.10.0" + }, + "dependencies": { + "eslint": "^8.30.0", + "eslint-plugin-node": "^11.1.0", + "jslint": "^0.12.1" + } +} diff --git a/2020/14-Docking_Data/second.js b/2020/14-Docking_Data/second.js new file mode 100644 index 0000000..e4d270f --- /dev/null +++ b/2020/14-Docking_Data/second.js @@ -0,0 +1,62 @@ +import * as fs from 'fs'; + +const setMask = /mask = ([10X]+)/; +const operation = /mem\[(\d+)] = (\d+)/; + +function applyMask(addr, mask) { + let ret = [parseInt(addr).toString(2).padStart(36, '0')]; + for (let i=0; i<36; ++i) { + switch (mask.charAt(i)) { + case '1': + ret = ret.map(a => a.substring(0, i) + '1' + a.substring(i+1)); + break; + case 'X': + ret = ret.reduce((acc, a) => acc.concat([ + a.substring(0, i) + '1' + a.substring(i+1), + a.substring(0, i) + '0' + a.substring(i+1), + ]), []); + } + } + return ret.map(a => parseInt(a, 2)); +} + +function processMasks(lines) { + let ret = new Map(); + let mask = ''; + lines.forEach(line => { + const m = line.match(setMask); + if (m) { + mask = m[1]; + } else { + const o = line.match(operation); + const addr = o[1]; + const value = parseInt(o[2]); + applyMask(addr, mask).forEach(r => ret.set(parseInt(r), value)); + } + }); + return ret; +} + +function load(filename) { + return processMasks(fs.readFileSync(filename, 'utf8') + .trim() + .split('\n') + ); +} + +let example = load('example2'); +let input = load('input'); + +function solve(input) { + let sum = 0; + input.forEach(value => sum += value); + return sum; +} + +const exampleOutput = solve(example); +if (exampleOutput !== 208) { + console.log('Example failed with ' + exampleOutput); + process.exit(1); // eslint-disable-line +} + +console.log(solve(input)); -- cgit v1.2.3