Which is the proper way to declare a singleton named DatabaseManager?

In order to subclass the Person class, what is one thing you must do? abstract class Person(val name: String) { abstract fun displayJob(description: String)}

Your function is passed by a parameter obj of type Any. Which code snippet shows a way to retrieve the original type of obj, including package information?

Which is the correct declaration of an integer array with a size of 5?

You have created a class that should be visible only to the other code in its module. Which modifier do you use?

Kotlin has two equality operators, == and ===. What is the difference?

Which line of code shows how to call a Fibonacci function, bypass the first three elements, grab the next six, and sort the elements in descending order?

You want to know each time a class property is updated. If the new value is not within range, you want to stop the update. Which code snippet shows a built-in delegated property that can accomplish this?

Your class has a property name that gets assigned later. You do not want it to be a nullable type. Using a delegate, how should you declare it?

You have an unordered list of high scores. Which is the simple method to sort the highScores in descending order? fun main() { val highScores = listOf(4000, 2000, 10200, 12000, 9030)}

You would like to group a list of students by last name and get the total number of groups. Which line of code accomplishes this, assuming you have a list of the Student data class? Data class Student(val firstName: String, val lastName: String)