AdventOfCode2022/Kalender/day10.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Kalender
{
    internal class day10
    {
        static string file = "../../../Kalender/files/day10.txt";
        static string[] input = File.ReadAllLines(file);


        static public void part1()
        {
            Dictionary<int, int> cycles = new Dictionary<int, int>();
            int cycle = 1;
            int x = 1;
            int result = 0;
            int endResult = 0;
            cycles.Add(cycle, x);
            foreach (string line in input)
            {
                if (line != "noop")
                {
                    cycle++;
                    cycles.Add(cycle, 0);
                    cycle++;
                    cycles.Add(cycle, int.Parse(line.Substring(4)));
                }
                else
                {
                    cycle++;
                    cycles.Add(cycle, 0);
                }
            }

            foreach (var item in cycles)
            {
                result += item.Value;

                switch (item.Key)
                {
                    case 20:
                        endResult += (item.Key * result);
                        break;
                    case 60:
                        endResult += (item.Key * result);
                        break;
                    case 100:
                        endResult += (item.Key * result);
                        break;
                    case 140:
                        endResult += (item.Key * result);
                        break;
                    case 180:
                        endResult += (item.Key * result);
                        break;
                    case 220:
                        endResult += (item.Key * result);
                        break;
                }
            }
            Console.WriteLine($"Part 1: {endResult}");
        }

        public static void part2()
        {
            var q = new List<(int cycle, int val)>();

            for (int i = 0; i < input.Length; i++)
            {
                var prog = input[i].Split(' ');
                var instr = prog[0];
                var val = prog.Length > 1 ? int.Parse(prog[1]) : 0;
                var cycle = q.Count > 0 ? q[q.Count - 1].cycle : 0;

                if (instr == "noop")
                {
                    q.Add((cycle + 1, 0));
                }
                else
                {
                    q.Add((cycle + 1, 0));
                    q.Add((cycle + 2, val));
                }
            }

            var samplecycles = new HashSet<int> { 20, 60, 100, 140, 180, 220 };
            int res = 0;
            int reg = 1;
            bool[,] screen = new bool[6, 40];

            for (int i = 0; i < q.Count; i++)
            {
                var cur = q[i];

                if (samplecycles.Contains(cur.cycle))
                {
                    res += (cur.cycle * reg);
                }

                int curpos = (cur.cycle - 1) % 40;

                if (curpos >= reg - 1 && curpos <= reg + 1)
                {
                    screen[(cur.cycle - 1) / 40, (cur.cycle - 1) % 40] = true;
                }

                reg += cur.val;
            }

            // Part1 result
            Console.WriteLine(res);

            // Draw part2
            for (int i = 0; i < screen.GetLength(0); i++)
            {
                for (int j = 0; j < screen.GetLength(1); j++)
                {
                    if (screen[i, j])
                        Console.Write("#");
                    else Console.Write(".");
                }

                Console.WriteLine();
            }
        }
    }
}