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Exercise

String indexing and concatenation

You are presented with one of the earliest known encryption techniques - Caesar cipher. It is based on a simple shift of each letter in a message by a certain number of positions down the given alphabet. For example, given the English alphabet, a shift of 1 for 'xyz' would imply 'yza' and vice versa in case of decryption. Notice that 'z' becomes 'a' in this case.

Thus, encryption/decryption requires two arguments: text and an integer key denoting the shift (key = 1 for the example above).

Your task is to create an encryption function given the English alphabet stored in the alphabet string.

Instructions 1/2

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  • Fill in the blanks in the loop to create an encrypted text.
  • Check the encryption function with the shift equals to 10 (it should return 'nkdkmkwz').