seniorKotlin
What is difference between List, Set, and Map in Kotlin collections?
Updated May 16, 2026
Short answer
List is ordered, Set is unique collection, Map stores key-value pairs.
Deep explanation
List allows duplicates and maintains order, Set ensures uniqueness, and Map stores key-value associations. Kotlin provides both mutable and immutable variants.
Unlock with a Pro subscription to view this section.
View pricingReal-world example
No real-world example available yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProCommon mistakes
No common mistakes listed yet.
Unlock with a Pro subscription to view this section.
Upgrade to ProFollow-up questions
No follow-up questions available yet.
Unlock with a Pro subscription to view this section.
Upgrade to Pro