30 lines
782 B
TypeScript
30 lines
782 B
TypeScript
import { open } from 'node:fs/promises';
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const file = await open('./2024/inputs/2');
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const all_diffs = []
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for await (const line of file.readLines()) {
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const levelsMatch = line.matchAll(/\d+ ?/gm)
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const levels = Array.from(levelsMatch).map(e => Number(e[0]))
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let previous = levels.shift()!
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all_diffs.push(levels.map((e) => {
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const value = e - previous
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previous = e
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return value
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}))
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}
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const result = all_diffs.reduce((prev, line, index) => {
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if (line.some(e => e == 0)) {
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return prev
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}
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if (!line.every(e => e < 0) && !line.every(e => e > 0)) {
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return prev
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}
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if (!line.every(e => Math.abs(e) >= 1 && Math.abs(e) <= 3)) {
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return prev
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}
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return prev + 1
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}, 0)
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console.log(result)
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all_diffs |