Computer scienceProgramming languagesKotlinTypes and data structuresOperations with collections

Filtering elements in collection

Which operations return a list of null?

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In the following code, we have a list of elements. Select the lines that will print a list of nulls:

println(elements.filterNot { x -> x != null }) // a
println(elements.filterIsInstance<null>()) // b
println(elements.partition { it == null }.first)  // c

Select one or more options from the list

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