Initial commit

C#/Caesar Entschlüsseler/Program.cs

@@ -0,0 +1,43 @@
+// See https://aka.ms/new-console-template for more information
+
+using System;
+using System.Collections.Generic;
+
+List<char> alphabet = new (new[] {
+    'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
+    'x', 'y', 'z'
+});
+
+Console.WriteLine("Caesar Entschlüsseler");
+Console.Write("Gebe die Nachricht ein: ");
+
+string message = Console.ReadLine().ToLower();
+char[] chars = message.ToCharArray();
+
+while (true) {
+    Console.Clear();
+    Console.Write("Gebe den Token ein: ");
+
+    int token = Convert.ToInt32(Console.ReadLine());
+
+    string newMsg = "";
+    
+    for (var i = 0; i < message.Length; i++) {
+        if (chars[i] == ' ') {
+            newMsg += " ";
+            continue;
+        }
+        
+        int index = alphabet.FindIndex(ch => ch == chars[i]) + token;
+        if (index < 0)
+            index = alphabet.Count - index;
+        if (index >= alphabet.Count)
+            index = index - alphabet.Count;
+        
+
+        newMsg += alphabet[index];
+    }
+
+    Console.WriteLine("Nachricht: " + newMsg.ToUpper());
+    Console.ReadKey();
+}