Added A1Z26 Cipher

ciphers/a1z26.py

@@ -0,0 +1,39 @@
+"""
+
+Converts a string of characters to a sequence of numbers corresponding to the character's position in the alphabet.
+
+Information URLs:
+https://www.dcode.fr/letter-number-cipher
+http://bestcodes.weebly.com/a1z26.html
+"""
+
+def encode(plain : str) -> list:
+    """
+    >>> encode("myname")
+    [13, 25, 14, 1, 13, 5]
+    """
+    result = []
+    for elem in plain:
+        result.append(ord(elem) - 96)
+    return result
+
+def decode(encoded : list) -> str:
+    """
+    >>> decode([13, 25, 14, 1, 13, 5])
+    'myname'
+    """
+    result = ""
+    for elem in encoded:
+        result += chr(elem + 96)
+    return result
+
+def main():
+    inp = input("->")
+    lowered = inp.lower()
+    encoded = encode(lowered)
+    print("Encoded: ", encoded)
+    decoded = decode(encoded)
+    print("Decoded:", decoded)
+
+if __name__ == "__main__":
+    main()