.

phil/day_01/index.js

+const importer = require('../utils/import')
+
+function foobar(input) {
+    return input.map(el => input.includes((2020 - el) + '') ? [el, (2020 - el)] : null).filter(el => !!el).flatMap(arr =>  parseInt(arr[0]) * parseInt(arr[1]))
+}
+async function exec() {
+
+    const result = importer.importInputAsArray('day_01/input.txt')
+        .then(result => result.split("\n").filter(res => !!res))
+        .then(inputArray => foobar(inputArray)[0]);
+    console.log('AWAIT: ', await result);
+}
+
+exec()

phil/day_01/input.txt

+1941
+1887
+1851
+1874
+1612
+1960
+1971
+1983
+1406
+1966
+1554
+1892
+1898
+1926
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+1073
+1603
+177
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+1659
+1303
+1759
+1853
+1107
+1818
+1672
+1352
+2002
+1838
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+1860
+1141
+1903
+1334
+1489
+1178
+1823
+1499
+1951
+1225
+1503
+1417
+1724
+1165
+1339
+1816
+1504
+1588
+1997
+1946
+1324
+1771
+1982
+1272
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+1333
+1750
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+1168
+2001
+1797
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+972
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+1835
+1825
+1822
+1880
+1732
+1785
+1727
+1275
+1355
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+1519
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+1278
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+1242
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+1861
+1493
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+1673
+1502
+607
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+1846
+1819
+1500
+1799
+1475
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+1608
+1806
+1660
+1618
+1904
+978
+1762
+1925
+1185
+1154
+1239
+1843
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+533
+1509
+1913
+287
+1707
+1115
+1699
+1859
+1077
+1915
+1412
+1360
+1646
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+1627
+1755
+1748
+1769
+1886
+1422
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+950
+100
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+1068
+1370
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+190
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+1794
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+1365
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+1921
+1777
+1102
+1850
+1498
+683
+1840
+1800
+1112
+1908
+1442
+1082
+1071

phil/day_02/index.js

+const importer = require('../utils/import');
+
+const counter = (str) => {
+    return str.split('').reduce((total, letter) => {
+        total[letter] ? total[letter]++ : total[letter] = 1;
+        return total;
+    }, {});
+};
+
+function lettersInIndex(value, letter, firstIndex, secondIndex) {
+    let count = 0;
+    if (value[firstIndex - 1] === letter) {
+        count ++;
+    }
+    if (value[secondIndex - 1] === letter) {
+        count ++;
+    }
+
+    return count === 1;
+}
+function inRange(x, min, max) {
+    return ((x-min) * (x-max) <= 0);
+}
+
+async function remap(arr) {
+    return arr.map(a => {
+        const foo = a.split(':');
+        const doo = foo[0].split(' ');
+        const range = doo[0].split('-');
+        const value = foo[1].trim();
+        const counted = counter(value);
+        const letter = doo[1];
+
+        return {
+            range: range,
+            letter: letter,
+            value: value,
+            counted: counted,
+            validRange: inRange(counted[letter], range[0], range[1]),
+            validLetter: lettersInIndex(value, letter, range[0], range[1]),
+        };
+    });
+}
+
+
+
+async function exec() {
+
+    const result = await importer.importInputAsArray('day_02/input.txt')
+        .then(result => result.split("\n").filter(res => !!res))
+        .then(resultArray => remap(resultArray))
+        .then(result => ({
+            firstTask: result.filter(r => r.validRange).length,
+            secondTask: result.filter(r => r.validLetter).length,
+        }));
+
+    console.log('TADA ', result);
+}
+exec()

phil/day_03/index.js

+const importer = require('../utils/import');
+
+function walkThroughTheMaze(inputArray, stepsRight, skip) {
+    let lastPositionRight = 0;
+    return inputArray.flatMap((path, index) => {;
+        if (skip && index % 2 === 1) { return }
+        const foo = lastPositionRight !== 0 ? path[lastPositionRight] : null;
+        new Array(stepsRight).fill(1).forEach(_ => {
+            lastPositionRight++;
+        });
+        return foo;
+    })
+}
+
+async function exec() {
+
+    const result = await importer.importInputAsArray('day_03/input.txt')
+        .then(result => result.split("\n").filter(res => !!res).map(element => {
+            return new Array(1000).fill(1).reduce((previous, _) => previous + element,'')
+        }))
+        .then(maze => {
+            return [1, 3, 5, 7, 1].map((stepCount, index) => {
+                const skip = index === 4;
+                return walkThroughTheMaze(maze, stepCount, skip).filter(el => el === '#').length
+            }).reduce((prev, curr) => prev * curr,1)
+        });
+
+    console.log('TADA ', result);
+}
+exec()

phil/day_03/input.txt

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