Merge pull request 'aufgabe2_codewars' (#3) from aufgabe2_codewars into main

Reviewed-on: #3

Die Vignère-Chiffre ist nicht ganz einfach, tiptop. Man könnte den Code noch vereinfachen, weil sich encode und decode nur an ganz wenigen Stellen unterscheiden (+ vs. -), aber das passt gut so.

src/codewars/vigenere_cipher_helper.py

@@ -0,0 +1,51 @@
+# Abgabe - Vigenère Cipher Helper
+# Link dazu: https://www.codewars.com/kata/52d1bd3694d26f8d6e0000d3
+# Leart Ramushi
+
+
+class VigenereCipher(object):
+    def __init__(self, key, alphabet):
+        self.key = key
+        self.alphabet = alphabet
+        self.alp_len = len(alphabet)
+        pass
+
+    def encode(self, text):
+        result = ""
+        key_pos = 0
+        print(text)
+
+        for pos in range(len(text)):
+            currrent_char = text[pos]
+            if currrent_char in self.alphabet:
+                key_char = self.key[key_pos % len(self.key)]
+                # print(currrent_char, " - ", key_char)
+                text_index = self.alphabet.index(currrent_char)
+                key_index = self.alphabet.index(key_char)
+                # print(text_index, " - ", key_index)
+                update_index = (text_index + key_index) % len(self.alphabet)
+                result += self.alphabet[update_index]
+            else:
+                result += currrent_char
+            key_pos += 1
+        print(result)
+        return result
+
+    def decode(self, text):
+        result = ""
+        key_pos = 0
+
+        for pos in range(len(text)):
+            currrent_char = text[pos]
+            if currrent_char in self.alphabet:
+                key_char = self.key[key_pos % len(self.key)]
+                # print(currrent_char, " - ", key_char)
+                text_index = self.alphabet.index(currrent_char)
+                key_index = self.alphabet.index(key_char)
+                # print(text_index, " - ", key_index)
+                update_index = (text_index - key_index) % len(self.alphabet)
+                result += self.alphabet[update_index]
+            else:
+                result += currrent_char
+            key_pos += 1
+        return result

src/temporary/temp.py

@@ -0,0 +1,23 @@
+class Konto:
+    def __init__(self, inhaber, saldo):
+        self.inhaber = inhaber
+        self.saldo = saldo
+
+    def einzahlen(self, betrag):
+        self.saldo += betrag
+
+    def abheben(self, betrag):
+        if betrag <= self.saldo:
+            self.saldo -= betrag
+        else:
+            print("Leider nicht genug Geld auf dem Konto")
+
+    def __repr__(self):
+        return f"Konto(inhaber='{self.inhaber}', saldo={self.saldo})"
+
+    def __str__(self):
+        return f"Konto von {self.inhaber} mit einem Saldo von {self.saldo} Euro"
+
+
+k = Konto("Max Mustermann", 100)
+print(str(k))