59 lines
1.4 KiB
JavaScript
59 lines
1.4 KiB
JavaScript
|
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\n").map(x => x.split("\n").map(x => eval(x)));
|
||
|
|
|
||
|
|
let orderedSum = 0;
|
||
|
|
|
||
|
|
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.forEach(([l, r], i) => {
|
||
|
|
console.log("Evaluate ", i + 1);
|
||
|
|
const result = evaluatePair(l, r);
|
||
|
|
console.log("Evaluate ", i + 1, " as ", result);
|
||
|
|
if(result || typeof result === "undefined") {
|
||
|
|
orderedSum += i + 1;
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
console.log(orderedSum);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
main();
|