Basic Cryptography Demo

Demonstration of String manipulation that may be done at the APCSA level. Caesar and Substitution ciphers already exist. Symbol counting using arrays is also present. Unfortunately, any Cryptography work requires character manipulation, not just String manipulation, and technically characters are not on the APCSA exam.

Controls:
Left / Right will shift the current String left / right the current Caesar Shift amount.
Up / Down will increase or decrease the current Caesar Shift amount.
Enter will allow a new Alphabet to be typed in. It must contain all 26 letters of the Alphabet in some order.
Space will allow a new phrase to be typed in (the default phrase was password).