Kotlin Collections

Collections in Kotlin are used to store group of related objects in a single unit. By using collection, we can store, retrieve manipulate and aggregate data.

Types of Kotlin Collections

Kotlin collections are broadly categories into two different forms. These are:

• Immutable Collection (or Collection)
• Mutable Collection

Immutable Collection:

Immutable collection also called Collection supports read only functionalities. Methods of immutable collection that supports read functionalities are:

Mutable Collection:

Mutable collections supports both read and write functionalities. Methods of mutable collections that supports read and write functionalities are: