feat[2020-day-01]: multiply matching expenses for part 1 solution

Author: developher-net

2020/day-01/index.js

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+require('./solution')

2020/day-01/input.txt

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+1539
+1914
+1866
+1407
+1706
+1423
+1834
+1700
+1573
+1486
+1743
+1394
+1693
+1705
+1530
+1811
+1626
+1473
+1901
+1481
+1527
+1841
+1891
+1750
+1343
+1899
+401
+1896
+1627
+1593
+1541
+874
+1484
+1210
+1692
+1963
+1964
+1780
+671
+1862
+1393
+1309
+1740
+1831
+1932
+1185
+1979
+1504
+1663
+1610
+1494
+1511
+1103
+1738
+1816
+1871
+1545
+1595
+1784
+1412
+1815
+1998
+1783
+1770
+1426
+1699
+1416
+1880
+1612
+1989
+1360
+1869
+1762
+1690
+1999
+1990
+1521
+1730
+703
+1463
+1670
+1472
+1413
+1669
+1502
+1548
+1475
+1694
+1314
+1980
+980
+1667
+890
+1569
+1456
+1406
+1924
+1973
+1965
+1533
+1827
+2000
+1847
+1520
+1729
+1512
+1555
+1566
+1505
+1672
+1169
+1835
+1850
+1493
+1861
+1288
+1675
+1676
+1556
+1320
+1757
+1870
+1642
+1903
+1372
+1967
+1894
+176
+1908
+1418
+1535
+1487
+1496
+1491
+1611
+1970
+1758
+1563
+1766
+1629
+1937
+1763
+1829
+1772
+1632
+1517
+1736
+1971
+1721
+1716
+1429
+1408
+1560
+1958
+1359
+1890
+1825
+1536
+1819
+1697
+1887
+1832
+2005
+892
+1471
+1425
+1677
+1673
+1128
+1878
+1062
+1470
+1875
+1854
+1518
+1568
+1919
+256
+1532
+1711
+1944
+1344
+1330
+1636
+1957
+1709
+1551
+1983
+1674
+1671
+1959
+1760
+1689
+1767
+1477
+1589
+1897
+1144
+1982
+1544

2020/day-01/solution.js

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