25 lines
628 B
JavaScript
25 lines
628 B
JavaScript
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#!/bin/node
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const fs = require('fs');
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fs.readFile('input.txt', (err, data) => {
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const seats = data.toString()
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.split('\n')
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.filter(l => l.length > 0)
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.map(s => s.replaceAll(/[BR]/g, '1')
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.replaceAll(/[FL]/g, '0'))
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.map(s => parseInt(s, 2));
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console.log('Highest seat:', seats.reduce((a, v) => v > a ? v : a, -1));
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seats.sort();
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for (let i = 0; i < seats.length; i++) {
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const seat = seats[i];
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const nextSeat = seats[i + 1];
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if (nextSeat - seat === 2) {
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console.log('Your seat:', seat + 1);
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break;
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}
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}
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});
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