Initial Commit

2025-11-30 20:28:10 -05:00
commit e9ac699e67
209 changed files with 39737 additions and 0 deletions
--- a/2022/Day02CSharp/Program.cs
+++ b/2022/Day02CSharp/Program.cs
@@ -0,0 +1,133 @@
+using System;
+using System.IO;
+
+namespace Day02CSharp
+{
+    internal class Program
+    {
+        enum Hand
+        {
+            Rock = 1, Paper = 2, Scissors = 3
+        }
+
+        static Hand GetHand(int i)
+        {
+            switch (i)
+            {
+                case 1:
+                    return Hand.Rock;
+                case 2:
+                    return Hand.Paper;
+                case 3:
+                    return Hand.Scissors;
+                default:
+                    throw new ArgumentOutOfRangeException();
+            }
+        }
+
+        static int GetScore(Hand left, Hand right)
+        {
+            if (left == right) return 3;
+
+            if (    left == Hand.Rock && right == Hand.Paper
+                ||  left == Hand.Paper && right == Hand.Scissors
+                ||  left == Hand.Scissors && right == Hand.Rock
+                ) { return 6; }
+
+            return 0;
+        }
+
+        static int GetBeater(Hand h)
+        {
+            switch (h)
+            {
+                case Hand.Rock: return (int)Hand.Paper;
+                case Hand.Scissors: return (int)Hand.Rock;
+                case Hand.Paper: return (int)Hand.Scissors;
+                default: throw new ArgumentOutOfRangeException();
+            }
+        }
+
+        static int GetLoser(Hand h)
+        {
+            switch (h)
+            {
+                case Hand.Rock: return (int)Hand.Scissors;
+                case Hand.Scissors: return (int)Hand.Paper;
+                case Hand.Paper: return (int)Hand.Rock;
+                default: throw new ArgumentOutOfRangeException();
+            }
+        }
+
+        static void Main(string[] args)
+        {
+            Part01();
+            Part02();
+        }
+
+        private static void Part01()
+        {
+            var fileName = @"data\input.txt";
+            int currentScore = 0;
+
+            using (StreamReader reader = File.OpenText(fileName))
+            {
+                while (!reader.EndOfStream)
+                {
+                    string line = reader.ReadLine();
+                    var split = line.Split(' ', StringSplitOptions.RemoveEmptyEntries);
+                    if (split.Length == 2)
+                    {
+                        int enemy = split[0][0] - 'A' + 1;
+                        int yours = split[1][0] - 'X' + 1;
+
+                        // Add in selected shape
+                        currentScore += yours;
+                        currentScore += GetScore(GetHand(enemy), GetHand(yours));
+                    }
+                }
+            }
+
+            Console.WriteLine(currentScore);
+        }
+
+        private static void Part02()
+        {
+            var fileName = @"data\input.txt";
+            int currentScore = 0;
+
+            using (StreamReader reader = File.OpenText(fileName))
+            {
+                while (!reader.EndOfStream)
+                {
+                    string line = reader.ReadLine();
+                    var split = line.Split(' ', StringSplitOptions.RemoveEmptyEntries);
+                    if (split.Length == 2)
+                    {
+                        int enemy = split[0][0] - 'A' + 1;
+                        int yours = split[1][0];                        
+
+                        switch (yours)
+                        {
+                            case 'X': // lose
+                                currentScore += GetLoser(GetHand(enemy));
+                                break;
+                            case 'Y': // draw
+                                currentScore += enemy + 3;
+                                break;
+                            case 'Z': // win
+                                currentScore += GetBeater(GetHand(enemy)) + 6;
+                                break;
+                            default:
+                                throw new ArgumentOutOfRangeException();
+
+                        }
+
+                    }
+                }
+            }
+
+            Console.WriteLine(currentScore);
+        }
+    }
+}