Abgabe Aufgabe 2

src/codewars/vigenere_cipher_helper.py

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+# 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