AdventOfCode-ts-2023/5/5_2.ts

import { Inspect, LoadInput } from "../common.ts";
import { ParseInput, MapSeed, isSeedMapArray } from "./5_common.ts"

const tests = [
    "seeds: 79 14 55 13",
    "",
    "seed-to-soil map:",
    "50 98 2",
    "52 50 48",
    "",
    "soil-to-fertilizer map:",
    "0 15 37",
    "37 52 2",
    "39 0 15",
    "",
    "fertilizer-to-water map:",
    "49 53 8",
    "0 11 42",
    "42 0 7",
    "57 7 4",
    "",
    "water-to-light map:",
    "88 18 7",
    "18 25 70",
    "",
    "light-to-temperature map:",
    "45 77 23",
    "81 45 19",
    "68 64 13",
    "",
    "temperature-to-humidity map:",
    "0 69 1",
    "1 0 69",
    "",
    "humidity-to-location map:",
    "60 56 37",
    "56 93 4",
];

const input = await LoadInput(5);

// Parse the input
const maps = ParseInput(input);

// Initialize closest location ID
let closestLocationID = Number.MAX_SAFE_INTEGER;

// Parse & map the seed ranges
do {
    console.log("Seed ranges remaining: ", maps.Seeds.length);
    
    const seedRangeStart = maps.Seeds.shift() || -1;
    const seedRangeEnd = maps.Seeds.shift() || -1;

    if (seedRangeStart == -1 || seedRangeEnd == -1) {
        throw new Error("seeds out of range!");
    }

    for(let i = 0; i < seedRangeEnd; i++) {
        const seedMap = MapSeed(seedRangeStart + i, maps);

        if (seedMap && seedMap.LocationID < closestLocationID) { closestLocationID = seedMap.LocationID; }
    }
} while (maps.Seeds.length);

console.log(`The lowest location ID found is: ${closestLocationID}`);