Question

How to get the unique values of an array in Scala

Answer 1

val array = Array(1, 2, 1, 1, 3, 3, 4, 4, 5, 5, 5, 5, 6, 7, 7, 8, 1)

val uniqueValues = array.distinct

println(uniqueValues.mkString(", ")) 




/*
run:

1, 2, 3, 4, 5, 6, 7, 8
 
*/

 

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Answer 2

val array = Array(1, 2, 1, 1, 3, 3, 4, 4, 5, 5, 5, 5, 6, 7, 7, 8, 1)

val uniqueValues = array.toSet.toArray

println(uniqueValues.mkString(", "))  




/*
run:

5, 1, 6, 2, 7, 3, 8, 4
 
*/

 

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