Sorting in descending order

In the last recipe, we saw how to sort a list with a specified comparator. We provide the comparator, and it sorts it accordingly. Interestingly, Kotlin also provides a method to sort items of a list in descending order. In this recipe, we will see how to sort a collection of primitive objects as well as custom objects in descending order. So let's get started!

Getting ready

I'll be using IntelliJ IDEA for writing and running Kotlin code; you are free to use any IDE that can do the same task.

How to do it…

We will now see how to sort in descending order using some examples:

1. First, we will try to sort a simple list of integers:

val listOfInt= listOf(1,2,3,4,5)
var sortedList=listOfInt.sortedDescending()
sortedList.forEach {
    print("${it} ")
}

This is the output:

5 4 3 2 1

2. Now, let's use our list of Person from the preceding recipe. To sort it in descending order, this is what we will do:

val p1=Person(91)
val p2=Person(10)
val p3=Person(78)
val listOfPerson= listOf&lt...