kata_vigenere_cipher_helper.py

@@ -1,40 +0,0 @@
-class VigenereCipher(object):
-    def __init__(self, key, alphabet):
-        self.key = key
-        self.alphabet = alphabet
-
-    def encode(self, text):
-        encoded = []
-        idx_key = 0
-
-        for char in text:
-            if char in self.alphabet:
-                text_pos = self.alphabet.index(char)
-                key_char = self.key[idx_key % len(self.key)]
-                key_pos = self.alphabet.index(key_char)
-
-                pos = (text_pos + key_pos) % len(self.alphabet)
-                encoded.append(self.alphabet[pos])
-            else:
-                encoded.append(char)
-            idx_key += 1
-
-        return "".join(encoded)
-
-    def decode(self, text):
-        decoded = []
-        idx_key = 0
-
-        for char in text:
-            if char in self.alphabet:
-                text_pos = self.alphabet.index(char)
-                key_char = self.key[idx_key % len(self.key)]
-                key_pos = self.alphabet.index(key_char)
-
-                pos = (text_pos - key_pos) % len(self.alphabet)
-                decoded.append(self.alphabet[pos])
-            else:
-                decoded.append(char)
-            idx_key += 1
-
-        return "".join(decoded)