AoC-23/Day7/Part1.js

import { readFileSync } from "fs";
const t0 = performance.now();

const cardPattern = [
	[1, 1, 1, 1, 1],
	[2, 1, 1, 1],
	[2, 2, 1],
	[3, 1, 1],
	[3, 2],
	[4, 1],
	[5],
];
const cards = ["A", "K", "Q", "J", "T", "9", "8", "7", "6", "5", "4", "3", "2"];
const input = readFileSync("input.txt")
	.toString()
	.split("\r\n")
	.filter((e) => e.length > 0);
const plays = input.map((p) => {
	const [draw, bidding] = p.split(" ");

	const count = draw
		.split("")
		.map((e) => cards.indexOf(e))
		.sort((a, b) => b - a)
		.reduce((a, i) => {
			const t = a;
			t[i] = (t[i] ?? 0) + 1;
			return t;
		}, {});
	const pattern = Object.keys(count)
		.map((e) => count[e])
		.sort((a, b) => b - a);
	const hand = cardPattern.findIndex((a) =>
		a.every((b, c) => b === pattern[c])
	);

	return { hand, draw, bidding: parseInt(bidding) };
});
console.log(plays);

const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`);