there's an off-by-one error in here somewhere
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50
09/index.ts
Normal file
50
09/index.ts
Normal file
@@ -0,0 +1,50 @@
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import fs from "node:fs";
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import { printTime, now, toNum } from "../util";
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const test = true;
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const data = fs.readFileSync(
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test ? "./inputs/testinput" : "./inputs/input",
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"utf8"
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);
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let timer = now.instant();
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console.log(
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"part one:",
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data
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.split("\n")
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.slice(0, -1)[0]
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.split("")
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.map(toNum)
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.reduce((disk, curr, index) => {
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const fill = index % 2 === 0 ? index / 2 : -1; // -1 represents free space
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return [...disk, ...Array.from({ length: curr }, () => fill)];
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}, [] as Array<number>)
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.reduce((disk, current, i, a) => {
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console.log(disk, current, i, a);
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if (current === -1) {
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while (true) {
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let tail = a.pop();
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if (tail === -1 || tail === undefined) {
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continue;
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} else {
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return [...disk, tail];
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}
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}
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} else {
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return [...disk, current];
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}
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}, [] as Array<number>)
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.reduce((checksum, curr, i) => {
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console.log(curr, i);
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return checksum + curr * i;
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}, 0),
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printTime(now.instant().since(timer))
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);
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// timer = now.instant();
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// console.log(
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// "part two:",
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// data.split("\n").slice(0, -1),
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// printTime(now.instant().since(timer))
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// );
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