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Rewrite D01P01
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+30
day01/part1.ts
+30
day01/part1.ts
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import { copyFileSync, readFileSync } from "fs";
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const instructions = readFileSync("./input.txt", "utf8")
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.split(/\n/)
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.map((line) => ({
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direction: line[0],
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distance: Number(line.slice(1)) % 100
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}));
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let dialPosition = 50;
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let dialAtZero = 0;
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for (const { direction, distance } of instructions) {
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let newDialPosition =
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direction === "L" ? dialPosition - distance : dialPosition + distance;
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if (newDialPosition < 0) {
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dialPosition = 100 - (Math.abs(newDialPosition) % 100);
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} else if (newDialPosition > 99) {
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dialPosition = newDialPosition % 100;
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} else {
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dialPosition = newDialPosition;
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}
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if (dialPosition === 0) {
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dialAtZero++;
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}
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}
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console.log(dialAtZero);