Challenge: Lambda Expression

Problem statement

Given a list of integers, count the number of occurrences of even numbers in the list. To do this, you are required to perform the following tasks:

• Define a function, countOfEven, to calculate the number of even integers in the input list, listOfIntegers, of the List<Int> type, passed to the function.
• One of the ways to loop over a list in Kotlin, is to invoke the higher order function forEach on that list. Pass a lambda expression to forEach.

Sample test case

var listOfIntegers = listOf(1, 4, 6, 3, 9, 7, 0) 
countOfEven(listOfIntegers)

Expected output

3