61 lines
2.0 KiB
JavaScript
61 lines
2.0 KiB
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 passports = [];
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data.toString()
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.split('\n\n')
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.map(line => line.replaceAll('\n', ' '))
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.map((line, index) => line.split(' ').map(f => {
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if (!passports[index]) passports[index] = {};
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const [key, value] = f.split(':');
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passports[index][key] = value;
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}));
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const requiredFields = [
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['byr', v => {
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const number = Number(v);
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return v.length === 4 && number >= 1920 && number <= 2002;
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}],
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['iyr', v => {
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const number = Number(v);
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return v.length === 4 && number >= 2010 && number <= 2020;
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}],
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['eyr', v => {
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const number = Number(v);
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return v.length === 4 && number >= 2020 && number <= 2030;
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}],
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['hgt', v => {
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const n = Number(v.substring(0, v.length - 2));
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if (v.endsWith('cm')) return n >= 150 && n <= 193;
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else if (v.endsWith('in')) return n >= 59 && n <= 76;
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else return false;
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}],
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['hcl', v => /^#[0-9a-f]{6}$/.test(v)],
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['ecl', v => /^(amb|blu|brn|gry|grn|hzl|oth)$/.test(v)],
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['pid', v => /^[0-9]{9}$/.test(v)],
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];
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let q1 = 0, q2 = 0;
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for (const passport of passports) {
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console.log(passport);
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let q1Fields = 0, q2Fields = 0;
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for (const [fieldName, validator] of requiredFields) {
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if (Object.keys(passport).indexOf(fieldName) >= 0) {
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q1Fields++;
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if (validator(passport[fieldName])) q2Fields++;
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console.log('>', fieldName, passport[fieldName], validator(passport[fieldName]));
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}
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}
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console.log('>', q1Fields + '/' + requiredFields.length, q2Fields + '/' + requiredFields.length);
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if (q1Fields === requiredFields.length) q1++;
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if (q2Fields === requiredFields.length) q2++;
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}
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console.log(q1 + '/' + passports.length, q2 + '/' + passports.length);
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});
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