Computer scienceProgramming languagesKotlinTypes and data structuresOperations with collections

Grouping collections

The result of a grouping function

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What is the result of this code?

val names = listOf("anne", "dimitry", "michael", "alice", "dany")
println(names.groupBy { it.first() })

Select one option from the list

{a=[anne, alice], d=[dimitry, dany], m=[michael]}

{[anne, alice], [dimitry, dany], [michael]}

{a=2, d=2, m=1}

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