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Day Eight: Part Two

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Lewis Dale 2023-12-08 10:04:45 +00:00
parent c86bcbffb6
commit f81359618d
1 changed files with 2 additions and 7 deletions
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9
src/day_eight.ts
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@ -1,7 +1,6 @@
import {anyCharOf, int, newline, uniDecimal, uniLetter, whitespace} from "parjs"; import {anyCharOf, newline, uniDecimal, uniLetter, whitespace} from "parjs";
import {between, exactly, manySepBy, manyTill, or, stringify, then} from "parjs/combinators"; import {between, exactly, manySepBy, manyTill, or, stringify, then} from "parjs/combinators";
import fs from "fs"; import fs from "fs";
import { Set } from 'immutable';
const patternParser = anyCharOf("LR").pipe(manyTill(newline().pipe(exactly(2)))); const patternParser = anyCharOf("LR").pipe(manyTill(newline().pipe(exactly(2))));
@ -90,14 +89,10 @@ export class DesertMap {
return step; return step;
} }
private isComplete(keys: string[]) {
return keys.every(key => key.endsWith('Z'));
}
public ghostStepsToZ(): number { public ghostStepsToZ(): number {
let keys = Object.keys(this.map).filter(key => key.endsWith('A')); let keys = Object.keys(this.map).filter(key => key.endsWith('A'));
return keys.map(key => this.stepsToZ(key)).reduce(lcm, 1); return keys.map(key => this.stepsToZ(key)).reduce(lcm);
} }
} }