I am working on an assignment in SML. I need to compare values in a list but I don't know if I should use recursion or iteration. Can someone provide an example of comparing values in a list using iteration and recursion in SML?

1. Define a function called countNegative (val countNegative = fn : int list -> int) that takes a list of integers as an argument and that returns a count of the number of negative integers in the list. For example, countNegative([3,17,~9,34,~7,2]) should return 2