61 lines
1.5 KiB
JavaScript
61 lines
1.5 KiB
JavaScript
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const fs = require('fs/promises');
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const sum = (arr) => arr.reduce((total, num) => total+num, 0);
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const arrayOfLength = n => Array.from(Array(n).keys()).map(() => {});
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const main = async () => {
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const input = (await fs.readFile("./input.txt", 'utf8')).split(/\n+/).map(x => eval(x));
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const evaluatePair = ((l, r) => {
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console.log("Compare items ----- \n ->", l, "\n ->", r);
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if(typeof l === "undefined") {
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console.log("l ran out");
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return true;
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}
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if(typeof r === "undefined") {
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console.log("r ran out");
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return false;
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}
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if(typeof l === "number") {
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if(typeof r === "number") {
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if(l === r) {return undefined;}
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console.log("l to r");
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return l < r;
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}
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l = [l];
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}
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if(typeof r === "number") {
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r = [r]
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}
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for(let [i, subL] of Object.entries(l)) {
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const result = evaluatePair(subL, r[i]);
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if(typeof result !== "undefined") {
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return result
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}
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};
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if(l.length < r.length) {
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return true;
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}
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});
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input.push([[2]], [[6]]);
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input.sort((l, r) => {
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const result = evaluatePair(l, r);
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console.log("SORT RESULT: ", result);
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return result || typeof result === "undefined" ? -1 : 1;
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});
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console.log("Input: ", input);
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const firstIndex = input.findIndex(x => JSON.stringify(x) === "[[2]]") + 1;
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const secondIndex = input.findIndex(x => JSON.stringify(x) === "[[6]]") + 1;
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console.log(firstIndex * secondIndex);
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}
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main();
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