47 lines
1.2 KiB
JavaScript
47 lines
1.2 KiB
JavaScript
import * as R from "remeda";
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import { readFile } from "../05/part1.js";
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const readInput = (...args) =>
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R.pipe(
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readFile(...args),
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(lines) => lines.split("\n\n"),
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R.compact, // remove last line
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R.map(
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block => block.split("\n").map( line => eval(line) )
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)
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);
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export const puzzleInput = readInput(import.meta.url, "input");
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export const sample = readInput(import.meta.url, "sample");
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export function isLessThan(x,y) {
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if( [x,y].every(R.isNumber) ) return x < y ? -1 : x == y ? 0 : 1;
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if( [x,y].every(R.isArray) ) {
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for ( const [a,b] of R.zip(x,y)) {
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const res = isLessThan(a,b);
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if(res !== 0) return res;
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}
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if( x.length === y.length ) return 0
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return x.length < y.length ? -1 : 1;
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}
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return isLessThan(...[x,y].map( z => R.isNumber(z)? [z] : z ));
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}
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const passthru = (x) => (arg) => {
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x(arg);
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return arg;
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}
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export default R.createPipe(
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R.map( ([x,y]) => isLessThan(x,y) ),
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(results) => results.map(
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(value,index) => ({ value, index: index+1 })
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),
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R.filter( ({ value }) => value !== 1 ),
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R.map( R.prop('index') ),
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(results) => results.reduce((a,b) => a+b)
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);
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