expeditaet/solutions/typescript/2020/24/src/p1.ts

Advent of Code Solutions

import { task } from '@alexaegis/advent-of-code-lib';
import { Vec2 } from '@alexaegis/advent-of-code-lib/model';
import packageJson from '../package.json';
import { hexagonalAxialDirections, parse } from './parse.function.js';

export const p1 = (input: string): number =>
	parse(input)
		.map((ttf) =>
			ttf
				.reduce((acc, a) => acc.addMut(hexagonalAxialDirections[a]), Vec2.ORIGIN.clone())
				.toString(),
		)
		.reduce((blacks, toFlip) => {
			blacks.flip(toFlip.toString());
			return blacks;
		}, new Set<string>()).size;

await task(p1, packageJson.aoc); // 479 ~1.22ms