Write this program in Scala. Write a function that determines if an integer input is prime:

isPrime(0) = false isPrime(1) = false isPrime(2) = true isPrime(8) = false etc.

Notes:

isPrime should throw an exception if its input is negative.

Write isPrime from scratch, don't use a predefined function, if there is one.

How would you write a twin prime detector? Examples: (3, 5), (11, 13), (17, 19)