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Commit b2990e7

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feat(2020-day-01): multiply matching expenses for part 1 solution
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‎2020/day-01/index.js

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require('./solution')

‎2020/day-01/input.txt

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‎2020/day-01/solution.js

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const fs = require('fs')
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const path = require('path')
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const filePath = path.join(__dirname, 'input.txt')
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const { validateRecords } = require('./expenseValidation')
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const { inputToArray } = require('../../2018/inputParser')
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fs.readFile(filePath, { encoding: 'utf8' }, (err, initData) => {
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if (err) throw err
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initData = inputToArray(initData.trim())
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.map(el => Number(el))
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const resetInput = () => {
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// Deep copy to ensure we aren't mutating the original data
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return JSON.parse(JSON.stringify(initData))
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}
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const part1 = () => {
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const data = resetInput()
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const results = validateRecords(data)
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return results[0] * results[1]
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}
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// const part2 = ({ target, maxNoun, maxVerb }) => {
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// // Helper for running the program with specified noun and verb inputs
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// const tryProgram = ({
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// noun,
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// verb
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// }) => {
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// const data = resetInput()
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// data[1] = noun
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// data[2] = verb
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// runProgram({ data })
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// console.debug(`Running with noun:${noun} and verb:${verb} produces ${data[0]}`)
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// return Number(data[0])
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// }
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// // Manipulate and loop through attempts for Part 2
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// let noun = -1
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// while (noun <= maxNoun) {
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// let verb = -1
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// noun++
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// while (verb <= maxVerb) {
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// verb++
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// const output = tryProgram({
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// noun,
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// verb
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// })
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// // Break the search loop on success
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// if (output === target) {
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// return 100 * noun + verb
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// }
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// }
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// }
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// }
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const answers = []
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answers.push(part1())
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// answers.push(part2())
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answers.forEach((ans, idx) => {
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console.info(`-- Part ${idx + 1} --`)
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console.info(`Answer: ${ans}`)
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})
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})

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