AoC-23/Day1/Part2.js
2023-12-08 09:25:00 +01:00

48 lines
1.1 KiB
JavaScript

import { readFileSync } from "fs";
const t0 = performance.now();
const names = {
zero: "0",
one: "1",
two: "2",
three: "3",
four: "4",
five: "5",
six: "6",
seven: "7",
eight: "8",
nine: "9",
};
const lines = readFileSync("input.txt")
.toString()
.split("\n")
.filter((e) => e.length > 0);
const numbers = lines.map((a) => {
const f1 = Object.keys(names)
.map((e) => [names[e], a.indexOf(e)])
.filter((e) => e[1] >= 0)
.sort((c, b) => c[1] - b[1])[0];
const l1 = Object.keys(names)
.map((e) => [names[e], a.lastIndexOf(e)])
.filter((e) => e[1] >= 0)
.sort((c, b) => b[1] - c[1])[0];
const numbers = a
.split("")
.map((c, i) => [c, i])
.filter((b) => parseInt(b));
const f2 = numbers.sort((c, b) => c[1] - b[1])[0];
const l2 = numbers.sort((c, b) => b[1] - c[1])[0];
const before = [f1, f2, l1, l2];
const after = before.sort((c, b) => c[1] - b[1]).filter((e) => e);
const i = after.length - 1;
if (!after[0] || !after[i]) debugger;
return parseInt(after[0][0] + after[i][0]);
});
const sum = numbers.reduce((a, i) => a + i);
console.log(sum);
const t1 = performance.now();
console.log(`Runtime: ${t1 - t0}ms`);