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Assignment 3 Solution

    1. a method stringInBounds which takes a string plainText and returns a Boolean value
    2. Initialize a Boolean ok to true
    3. Start a for loop (int i=0; i<plainText.length(); i++)
    4. if (plainText.charAt(i) < LOWER_BOUND || plainText.charAt(i) > UPPER_BOUND), return false
    5. close for loop
    6. return true

    7. Create a method encryptCaesar which takes a string plainText and an int key and returns a string value
    8. Initialize a string encryptedText to ""
    9. if(stringInBounds(plainText)), Start a for loop for (int i=0; i<plainText.length(); i++)
    10. initialize a char thisChar to plainText.charAt(i)
    11. initialize an int encryptedCharInt to ((int)thisChar+key)
    12. while (encryptedCharInt>UPPER_BOUND), subtract encryptedCharInt by RANGE
    13. increase encryptedText by (char)encryptedCharInt
    14. close for loop
    15. return encryptedText

    16. Create a method encryptBellaso which takes two strings plainText and bellasoStr and returns a string value
    17. Initialize a string encryptedText to ""
    18. Initialize int bellasoStrLength to bellasoStr.length()
    19. if(stringInBounds(plainText)), Start a for loop for (int i=0; i<plainText.length(); i++)
    20. initialize a char thisChar to plainText.charAt(i)
    21. initialize an int encryptedCharInt to ((int)thisChar+(int)bellasoStr.charAt(i %bellasoStrLength))
    22. while (encryptedCharInt>UPPER_BOUND), subtract encryptedCharInt by RANGE
    23. increase encryptedText by (char)encryptedCharInt
    24. close for loop
    25. return encryptedText

    26. Create a method decryptCaesar which takes a string encryptedText and an int key and returns a string value
    27. Initialize a string decryptedText to ""
    28. Start a for loop for (int i=0; i< encryptedText.length(); i++)
    29. initialize a char thisChar to encryptedText.charAt(i)
    30. initialize an int decryptedCharInt to ((int)thisChar-key)
    31. while (decryptedCharInt<LOWER_BOUND), increase decryptedCharInt by RANGE
    32. increase decryptedText by (char) decryptedCharInt
    33. close for loop
    34. return dencryptedText

    35. Create a method dencryptBellaso which takes two strings encryptedText and bellasoStr and returns a string value
    36. Initialize a string dencryptedText to ""
    37. Initialize int bellasoStrLength to bellasoStr.length()
    38. Start a for loop for (int i=0; i<encryptedText.length(); i++)
    39. initialize a char thisChar to encryptedText.charAt(i)
    40. initialize an int dencryptedCharInt to ((int)thisChar-(int)bellasoStr.charAt(i %bellasoStrLength))
    41. while (dencryptedCharInt<LOWER_BOUND), increase dencryptedCharInt by RANGE
    42. increase dencryptedText by (char)dencryptedCharInt
    43. close for loop
    44. return dencryptedText

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