advent-of-code/2022/13/index2.js

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2022-12-13 07:27:24 +00:00
const fs = require('fs/promises');
const sum = (arr) => arr.reduce((total, num) => total+num, 0);
const arrayOfLength = n => Array.from(Array(n).keys()).map(() => {});
const main = async () => {
const input = (await fs.readFile("./input.txt", 'utf8')).split(/\n+/).map(x => eval(x));
const evaluatePair = ((l, r) => {
console.log("Compare items ----- \n ->", l, "\n ->", r);
if(typeof l === "undefined") {
console.log("l ran out");
return true;
}
if(typeof r === "undefined") {
console.log("r ran out");
return false;
}
if(typeof l === "number") {
if(typeof r === "number") {
if(l === r) {return undefined;}
console.log("l to r");
return l < r;
}
l = [l];
}
if(typeof r === "number") {
r = [r]
}
for(let [i, subL] of Object.entries(l)) {
const result = evaluatePair(subL, r[i]);
if(typeof result !== "undefined") {
return result
}
};
if(l.length < r.length) {
return true;
}
});
input.push([[2]], [[6]]);
input.sort((l, r) => {
const result = evaluatePair(l, r);
console.log("SORT RESULT: ", result);
return result || typeof result === "undefined" ? -1 : 1;
});
console.log("Input: ", input);
const firstIndex = input.findIndex(x => JSON.stringify(x) === "[[2]]") + 1;
const secondIndex = input.findIndex(x => JSON.stringify(x) === "[[6]]") + 1;
console.log(firstIndex * secondIndex);
}
main();