Implement a class named ShiftCipher with a property called shiftAmount.

$$ Implement encode and decode functions for the ShiftCipher class as follows,

$$ encode function should take a string or a char array, and return another string

or char array by shifting the letters in the alphabeth by the shiftAmount. For

example, given the string $$abcd$$ the function should return $$bcde$.$ You can

achieve this by converting chars to integers, using ASCII representations to shift

$($eg$.$ a$=97,$ b$=98),$ and convert back to chars.

$$ decode function should take a shift encoded string or char array and convert it

back to its original form. This function is the reverse of the encode function.