The Ceasar cipher is a basic encryption technique used by Julius Ceasar to securely communicate with his generals. Each letter is replaced by another letter N positions down the english alphabet. For example, for a rotation of 5, the letter c would be replaced by an h. In case of a z, the alphabet rotates and it is transformed into a d.
Implement a decoder for the Caesar cipher where N = 5.
TIP: Use code.toCharArray() to get an array of characters.