init d7p2

Day7/Part2.js

@@ -0,0 +1,58 @@
+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("\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) };
+	})
+	.sort((a, b) => {
+		const type = a.hand - b.hand;
+		if (type !== 0) return type;
+
+		for (const [i, c] of a.draw.split("").entries()) {
+			const p1 = cards.indexOf(c);
+			const p2 = cards.indexOf(b.draw[i]);
+
+			if (p1 === p2) continue;
+			return p1 > p2 ? -1 : 1;
+		}
+		return 0;
+	})
+	.map((e, i) => e.bidding * (i + 1))
+	.reduce((a, i) => a + i);
+console.log(plays);
+
+const t1 = performance.now();
+console.log(`Runtime: ${t1 - t0}ms`);