Add day 25

Days/Day25.cs

@@ -0,0 +1,111 @@
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.Intrinsics.X86;
+using System.Text;
+using Microsoft.CodeAnalysis;
+using Microsoft.VisualBasic;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day25 : Day
+{
+    public override int Number => 25;
+    public override string Name => "Code Chronicle";
+
+    public override void RunPart1(bool display = true)
+    {
+        var (locks, keys) = ParseInput();
+
+        var workingPairs = 0;
+
+        foreach (var lockToTest in locks)
+        {
+            foreach (var key in keys)
+            {
+                if (lockToTest.Height1 + key.Height1 < 6 &&
+                    lockToTest.Height2 + key.Height2 < 6 &&
+                    lockToTest.Height3 + key.Height3 < 6 &&
+                    lockToTest.Height4 + key.Height4 < 6 &&
+                    lockToTest.Height5 + key.Height5 < 6)
+                {
+                    workingPairs++;
+                }
+            }
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Amont of unique key/lock pairs that fit: [yellow]{workingPairs}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+
+    }
+
+    private (List<Lock> Locks, List<Key> Keys) ParseInput()
+    {
+        var locks = new List<Lock>();
+        var keys = new List<Key>();
+
+        Span<int> itemHeights = stackalloc int[5];
+
+        var input = Input.AsSpan();
+        foreach (var itemRange in input.Split($"{Environment.NewLine}{Environment.NewLine}"))
+        {
+            var item = input[itemRange];
+            var lines = item.EnumerateLines();
+
+            var isKey = false;
+
+            // Reset item heights
+            itemHeights[0] = -1;
+            itemHeights[1] = -1;
+            itemHeights[2] = -1;
+            itemHeights[3] = -1;
+            itemHeights[4] = -1;
+
+            for (var height = 0; height <= 6; height++)
+            {
+                lines.MoveNext();
+                var line = lines.Current;
+
+                if (height is 0)
+                {
+                    isKey = line is ".....";
+
+                    continue;
+                }
+
+                for (var i = 0; i < 5; i++)
+                {
+                    if (isKey && line[i] is '#' && itemHeights[i] is -1)
+                    {
+                        itemHeights[i] = 6 - height;
+                    }
+                    else if (!isKey && line[i] is '.' && itemHeights[i] is -1)
+                    {
+                        itemHeights[i] = height - 1;
+                    }
+                }
+            }
+
+            if (isKey)
+            {
+                keys.Add(new Key(itemHeights[0], itemHeights[1], itemHeights[2], itemHeights[3], itemHeights[4]));
+            }
+            else
+            {
+                locks.Add(new Lock(itemHeights[0], itemHeights[1], itemHeights[2], itemHeights[3], itemHeights[4]));
+            }
+        }
+
+        return (locks, keys);
+    }
+
+    private readonly record struct Lock(int Height1, int Height2, int Height3, int Height4, int Height5);
+    private readonly record struct Key(int Height1, int Height2, int Height3, int Height4, int Height5);
+}