40 lines
1.4 KiB
TypeScript
40 lines
1.4 KiB
TypeScript
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import { solvables } from "../main.ts";
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import type { Solvable } from "../solvable.ts";
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import { readInput } from "../utils.ts";
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class DayOne implements Solvable {
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input = readInput('01')
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public part1(): DayOne {
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const vals = this.input.trim().split("\n").map(line => line.split(' '))
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const left = vals.map(line => Number.parseInt(line[0])).sort()
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const right = vals.map(line => Number.parseInt(line[1])).sort()
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const diff: number[] = []
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left.forEach((left, idx) => {
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diff.push(Math.abs(left - right[idx]))
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})
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const result = diff.reduce((prev, curr) => prev + curr)
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console.log(result)
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return this
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}
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public part2(): DayOne {
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const vals = this.input.trim().split("\n").map(line => line.split(' '))
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const left = vals.map(line => Number.parseInt(line[0])).sort()
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const right = vals.map(line => Number.parseInt(line[1])).sort()
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const countedOccurences: Map<number, number> = new Map()
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left.forEach(left_val => countedOccurences.set(left_val, right.filter(right_val => left_val === right_val).length))
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const result = countedOccurences
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.entries()
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.map(([left_val, occurences]) => left_val * occurences)
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.reduce((prev, curr) => prev + curr)
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console.log(result)
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return this
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}
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}
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solvables.push(new DayOne())
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