# Four Ways to Remove Duplicates From an Array in Kotlin

DevFeed: [Four Ways to Remove Duplicates From an Array in Kotlin](<https://devfeed.tech/articles/four-ways-to-remove-duplicates-from-an-array-in-kotlin-25159.md>)

Original publisher: [Read original article](<https://blog.droidchef.dev/the-best-way-to-remove-duplicates-from-an-array-in-kotlin/>)

Author: Ishan Khanna

Published: 2022-10-23T02:29:26Z

Content type: tutorial

Language: en

Sources: [Ishan Khanna](<https://devfeed.tech/sources/ishan-khanna.md>)

Topics: [Kotlin](<https://devfeed.tech/topics/kotlin.md>), [Data structures](<https://devfeed.tech/topics/data-structures.md>), [Code](<https://devfeed.tech/topics/code.md>)

Tags: [data-structure](<https://devfeed.tech/tags/data-structure.md>), [efficiency](<https://devfeed.tech/tags/efficiency.md>), [function](<https://devfeed.tech/tags/function.md>), [implementation](<https://devfeed.tech/tags/implementation.md>), [kotlin](<https://devfeed.tech/tags/kotlin.md>)

## AI overview

This Kotlin tutorial explains four ways to remove duplicate values from an array: toSet(), toHashSet(), toMutableSet(), and distinct(). It compares their return types, ordering behavior, mutability, implementation details, and efficiency considerations.

## Source excerpt

In this article, Ishan Khanna shows you the best way to remove duplicates from an array in kotlin.