kotlin collections

Kotlin collections provide a set of classes and interfaces to work with collections of objects. The basic collection types in Kotlin are List, Set, and Map. Collections in Kotlin are immutable by default, but they also provide mutable counterparts. To create a list, you can use the listOf() function, and to create a mutable list, you can use mutableListOf(). Similarly, to create a set, you can use setOf(), and for a mutable set, you can use mutableSetOf(). For maps, you can use mapOf() to create an immutable map, and mutableMapOf() to create a mutable map. Kotlin collections also provide useful operations such as filter, map, reduce, and more, which can be used to manipulate and work with the elements in the collections.