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      Learn how to use collections in Kotlin.

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      Classes and Objects provide the foundation for all Kotlin development.

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Category upKotlin

Kotlin Collections

Learn about the Kotlin Collections and implementations for Lists, Maps, and Sets. Learn how to work with Kotlin Collections through the guides below.

  • List (54)
  • Map (24)
  • Set (5)
  • Sorting (5)
  • JSON (3)
  • Sequence (3)
  • Math (2)
  • Data Class (2)
  • String Conversions (2)

>> Removing an Entry From a Kotlin Map While Iterating Over It

>> Find Average of All Items in a List in Kotlin

>> Remove the Last Element in a List in Kotlin

>> How to Create a Frequency Map in Kotlin

>> Apply a Function to Each Element of a List in Kotlin

>> Removing the First Element From an ArrayList in Kotlin

>> Swap Elements in MutableList in Kotlin

>> Matrix Addition and Multiplication in Kotlin

>> Find the Maximum Entry in a Kotlin Map

>> How to Sort Elements in Lexicographical Order in Kotlin

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