46 lines
1.1 KiB
TypeScript
46 lines
1.1 KiB
TypeScript
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const cycles = (instruction: string): number => {
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if (instruction === "noop") return 1;
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if (instruction === "addx") return 2;
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return 0;
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};
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export const main = async (lines: string[]): Promise<number | string> => {
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const instructions = lines.map((line) => line.split(" "));
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let signalStrength = 0;
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let cycle = 0;
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const registers = { x: 1 };
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for (const [instruction, operand] of instructions) {
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const instCycles = cycles(instruction);
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for (let i = 0; i < instCycles; i++) {
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cycle++;
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if (cycle >= 20 && (cycle - 20) % 40 === 0) {
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signalStrength += registers.x * cycle;
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}
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}
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if (instruction === "addx") {
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registers.x += parseInt(operand);
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}
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}
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return signalStrength;
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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");
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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 P1 ===");
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console.log(answer);
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}
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