encoding and decoding done

encode_and_decode.py

@@ -0,0 +1,37 @@
+def encode(strs):
+    res = ""
+    for s in strs:
+        res += str(len(s)) + "#" + s
+    return res
+
+def decode(s):
+    res = []
+    i = 0
+
+    while i < len(s):
+        j = i
+        while s[j] != '#':
+            j += 1
+        length = int(s[i:j])
+        i = j + 1
+        j = i + length
+        res.append(s[i:j])
+        i = j
+
+    return ''.join(res)
+
+
+action = input("Do you want to encode or decode, Press 'e' to encode and 'd' to decode: ")
+
+while action != 'e' and action != 'd':
+    action = input("Do you want to encode or decode, Press 'e' to encode and 'd' to decode: ")
+    print('Your action is', action)
+
+if action == 'e':
+    string = input("Enter the string you wish to encode: ")
+    print('string is', string)
+    print("Encoded string is",encode(string))
+elif action == 'd':
+    string = input("Enter the string you wish to decode: ")
+    print('string is', string)
+    print("Decoded string is", decode(string))