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dannyrb/advent_of_code_06.js

Created December 7, 2021 17:19
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  1. dannyrb created this gist Dec 7, 2021.
    48 changes: 48 additions & 0 deletions advent_of_code_06.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,48 @@
    const fs = require('fs');
    const path = require('path');

    const problemPart = 1;
    const fileName = `input-${problemPart}.txt`;
    const input = fs.readFileSync(path.resolve(__dirname, fileName), 'utf8')
    const inputArray = input.split(',').map(x => Number(x));

    function timeTravel(fishies, timeTravelDays) {
    let fishBirthDayCounts = {
    0: fishies.filter(x => x === 0).length,
    1: fishies.filter(x => x === 1).length,
    2: fishies.filter(x => x === 2).length,
    3: fishies.filter(x => x === 3).length,
    4: fishies.filter(x => x === 4).length,
    5: fishies.filter(x => x === 5).length,
    6: fishies.filter(x => x === 6).length,
    7: fishies.filter(x => x === 7).length,
    8: fishies.filter(x => x === 8).length,
    }

    for (let currentDay = 0; currentDay < timeTravelDays; currentDay++) {
    fishBirthDayCounts = {
    0: fishBirthDayCounts['1'],
    1: fishBirthDayCounts['2'],
    2: fishBirthDayCounts['3'],
    3: fishBirthDayCounts['4'],
    4: fishBirthDayCounts['5'],
    5: fishBirthDayCounts['6'],
    6: fishBirthDayCounts['7'] + fishBirthDayCounts['0'],
    7: fishBirthDayCounts['8'],
    8: fishBirthDayCounts['0'],
    }
    }

    let total = 0;
    Object.keys(fishBirthDayCounts).forEach(x => {
    total += fishBirthDayCounts[x]
    });

    console.log(fishBirthDayCounts)
    console.log(total)
    }

    console.log('~~ 80')
    timeTravel(inputArray, 80)
    console.log('~~ 256')
    timeTravel(inputArray, 256)