def plaintext(ciphertext): # 1. Get length of ciphertext msg_len = len(ciphertext) # 2. Create empty buffer decoded_buffer = [] # 3. while index is < cipher_length cipher_idx = 0 while cipher_idx < msg_len: # 4. read skip_length skip_len = int(ciphertext[cipher_idx]) # 5. skip skip_length chars cipher_idx = cipher_idx + skip_len + 1 # 6. append cur_char to buffer decoded_buffer.append(ciphertext[cipher_idx]) # 7. increment cipher_idx cipher_idx = cipher_idx + 1 # 8. return buffer as a string return "".join(decoded_buffer) print plaintext("0h2abe1zy") print plaintext("2xyz") print plaintext("0h2zyi2467")
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