anmolmajithia / coursera-javaprogramming---arrays-lists-and-structured-data

My codes to Courseras course - Java Programming: Arrays, Lists, and Structured Data

Answers to final quiz of Vigenere Cipher :

1. What is the language of secretmessage3.txt?

• French

2. What is the first line of the message you decrypted from secretmessage3.txt?

• La chambre à coucher de Juliette.

3. What is the language of secretmessage4.txt?

• German

4. What is the first line of the message you decrypted from secretmessage4.txt?

• Drei Hexen treten auf.

5. Recall that the choice to test key lengths 1–100 was arbitrary, and that the longer a key is with respect to an encrypted message, the less likely this Vigenère decryption algorithm is to work. How long would a key have to be, so that you could gain no information about an original message by analyzing the encrypted message?

• Exactly the message length

6. The Vigenère decryption algorithm used in this lesson has limitations. In which of the following scenarios could the program return incorrect results? (Select all that are correct.)

• (This question sucks but the correct answer is:) Check all except - The language of the original message has an unusal letter that is highest in frequency (not'e' or 'a').

7. Consider the Vigenère decryption algorithm described in this lesson. Which one of the following could be a problem?

• The key length is long compared with the message

Just made this for Question 6 coz its the most annoying one I have ever come across