63 lines
1.5 KiB
TypeScript
63 lines
1.5 KiB
TypeScript
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export const main = async (lines: string[]): Promise<number | string> => {
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let card = 0;
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const counts = new Map<number, number>();
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lines.forEach((_, i) => counts.set(i, 1));
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for (const line of lines) {
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const [cardS, numbersS] = line.split(" | ");
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const cardNums = cardS
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.split(":")
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.at(1)!
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.split(" ")
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.filter((x) => x)
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.map((x) => x.trim())
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.map((x) => parseInt(x));
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const winners = numbersS
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.split(" ")
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.filter((x) => x)
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.map((x) => x.trim())
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.map((x) => parseInt(x));
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const winnerSet = new Set<number>(winners);
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const wins = cardNums.reduce(
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(acc, x) => acc + (winnerSet.has(x) ? 1 : 0),
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0
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);
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const currCardCount = counts.get(card) ?? 1;
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for (let _ = 0; _ < currCardCount; _++) {
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for (let i = 1; i <= Math.min(wins, lines.length - 1); i++) {
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const currCount = counts.get(card + i) ?? 1;
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counts.set(card + i, currCount + 1);
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}
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}
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card++;
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}
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console.log(counts);
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return Array.from(counts.keys())
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.map((x) => counts.get(x)!)
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.reduce((acc, x) => acc + x, 0);
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};
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//
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const isrun = process.argv.length > 1 && process.argv[1] === import.meta.path;
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if (isrun) {
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const file = Bun.file("./problem.txt");
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const text = await file.text();
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const lines = text.split("\n").filter((x) => x && x.length);
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console.log("=== COMPUTATION ===\n");
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const answer = await main(lines);
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console.log("\n=== /COMPUTATION ===\n");
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console.log("=== ANSWER TO P2 ===");
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console.log(answer);
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}
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