It's time to send and receive secret messages.

• Create a function that takes a string and returns a coded message.
• Create a function that takes an array and returns a decoded message.

The first letter of the string, or the first element of the array represents the Character Code of that letter. The next elements are the differences between the characters: e.g. A +3 --> C or z -1 --> y.

Examples

difCiph("Hello") ➞ [72, 29, 7, 0, 3]
// H = 72, the difference between the H and e is 29 (upper- and lowercase).
// The difference between the two l's is obviously 0.

difDiciph([ 72, 33, -73, 84, -12, -3, 13, -13, -68 ]) ➞ "Hi there!"

difCiph("Sunshine") ➞ [83, 34, -7, 5, -11, 1, 5, -9]

Notes

N/A