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11
2023/01/README.md
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11
2023/01/README.md
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@ -0,0 +1,11 @@
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# 01
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- First, in the B, was replacing all letters, which did work for the test data, but not the input. Then I just actually searched fof the first and last occurrence.
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<details>
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<summary>Solutions</summary>
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<ol>
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<li>54605</li>
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<li>55429</li>
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</ol>
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</details>
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60
2023/01/typescript/main.ts
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60
2023/01/typescript/main.ts
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import fs from 'node:fs'
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import path from 'node:path'
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// SETUP
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const INPUT = fs.readFileSync(path.join(import.meta.dir, '../input.txt'), 'utf-8').trim()
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const TEST = fs.readFileSync(path.join(import.meta.dir, '../test.txt'), 'utf-8').trim()
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// TASK
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function partA(input: string) {
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const total = input
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.split('\n')
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.map((line) => {
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const digits = line.split('').filter((c) => /\d/.test(c))
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return parseInt(digits[0]! + digits[digits.length - 1])
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})
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.reduce((acc, cur) => acc + cur, 0)
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console.log(total)
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}
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function partB(input: string) {
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const names = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine']
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const total = input
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.split('\n')
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.map((line) => {
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let first = 0
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let last = 0
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root: for (let i = 0; i < line.length; i++) {
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for (const [num, name] of names.entries()) {
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const asString = (num + 1).toString()
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if (line[i] === asString || line.slice(i).startsWith(name)) {
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first = num + 1
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break root
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}
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}
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}
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root: for (let i = line.length; i >= 0; i--) {
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for (const [num, name] of names.entries()) {
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const asString = (num + 1).toString()
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if (line[i] === asString || line.slice(i).startsWith(name)) {
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last = num + 1
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break root
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}
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}
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}
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return last + 10 * first
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})
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.reduce((acc, cur) => acc + cur, 0)
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console.log(total)
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}
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console.log('Part A:')
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partA(TEST)
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partA(INPUT)
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console.log('Part B:')
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partB(TEST)
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partB(INPUT)
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@ -6,8 +6,8 @@ import fs from 'node:fs'
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import path from 'node:path'
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// SETUP
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const INPUT = fs.readFileSync(path.join(__dirname, '../input.txt'), 'utf-8').trim()
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const TEST = fs.readFileSync(path.join(__dirname, '../test.txt'), 'utf-8').trim()
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const INPUT = fs.readFileSync(path.join(import.meta.dir, '../input.txt'), 'utf-8').trim()
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const TEST = fs.readFileSync(path.join(import.meta.dir, '../test.txt'), 'utf-8').trim()
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// TASK
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@ -1,6 +1,4 @@
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{
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"name": "advent-of-code",
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"type": "module",
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"scripts": {
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"gen": "bun hygen riddle new"
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},
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