22 lines
594 B
JavaScript
22 lines
594 B
JavaScript
import fs from "fs";
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/**
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* Main function for Puzzle A
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*
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* @param {string} data - Puzzle input as a single string.
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* @returns {number} The highest Seat ID in the puzzle input.
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*/
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async function main(data) {
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const entries = data
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.split(/\r?\n/)
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.map((line) => line.replace(/[FL]/g, "0").replace(/[BR]/g, "1"))
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.map((line) => line.match(/^(?<y>[01]{7})(?<x>[01]{3})$/))
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.map((entry) => parseInt(entry[0], 2));
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return Math.max(...entries);
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}
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fs.readFile("input", (err, data) => {
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if (err) throw err;
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main(data.toString()).then(console.log).catch(console.error);
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});
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