Return type of `toSet()` function is a `Set`.This is also the simplest and the best way to remove duplicates. By converting a `List` into a `Set` you can easily remove duplicate elements. The first method of removing duplicates in Kotlin collection uses a process that converts the `List` into a new `Set`.Ī Set is a data structure that by design does not allow duplicate elements. How to remove all the duplicates from a list in Kotlin?.How to find unique elements in the list?.How to remove duplicate elements from the list?.If you encounter a `List` in Kotlin with duplicate elements, you will find solutions to all the questions mentioned below Vertex(5, 'droidchef, android, gradle, kotlin') Vertex(4, 'remove duplicates from kotlin using toMutableSet()'), Vertex(3, 'remove duplicates from kotlin using distinct()'), Vertex(2, 'remove duplicates from kotlin using toHashSet()'),

Vertex(1, 'remove duplicates from kotlin using toSet()'), Now you have a list of `Vertex` objects represented as val vertices = listOf( You have a `data` class called `Vertex` represented as data class Vertex(val id: Int, val description: String) Using the `distinct()` extension function.Using the `toMutableSet()` extension function.Using the `toHashSet()` extension function.They all involve the use of an extension function on Kotlin Collection(s) classes in the Standard Template Library I also have an article on how to remove duplicates from an array in Kotlin that you can read here. In this article, we will learn about all of them. There are four ways to remove duplicate elements from a list in Kotlin using existing functions.

Kotlin find in list