Which function changes the value of the element at the current iterator location?

What three methods does this class have? Class Person

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?

This code is occasionally throwing a null pointer exception (NPE). How can you change the code so it never throws as NPE? println("length of First Name = ${firstName!!.length}")

You have two arrays, a and b. Which line combines a and b as a list containing the contents of both? val a = arrayOf(1, 2, 3) val b = arrayOf(100, 200, 3000)

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?