day 8 - easy !

008/task.py

@@ -0,0 +1,41 @@
+
+
+def shift_string(string, offset):
+    alphabet = "abcdefghijklmnopqrstuvwxyz"
+    max_offset = len(alphabet) -1
+    min_offset = 0
+
+    output = ""
+
+    for letter in string.lower():
+        letter_index = alphabet.find(letter)
+        if letter_index == -1:
+            result = letter
+        else:
+            if letter_index + offset > max_offset:
+                result = alphabet[letter_index - len(alphabet) + offset]
+            elif letter_index + offset < 0:
+                result = alphabet[letter_index + len(alphabet) + offset]
+            else:
+                result = alphabet[letter_index + offset]
+
+        output += result
+    
+    print(f"Your result is: {output}")
+
+
+b_continue = "yes"
+
+while b_continue == "yes":
+    action = input("What do you want to do? \"encode\" or \"decode\"?\n")
+    message = input("Type your message.\n")
+    offset = int(input("What is your offset?\n"))
+
+    if action == "encode":
+        shift_string(message, offset)
+    elif action == "decode":
+        shift_string(message, -offset)
+    else:
+        print("Invalid action - Try again")
+
+    b_continue = input("Do you want to continue? \"yes\" or \"no\"\n")