How to convert two consecutive elements from List to entries in Map?

Question

I have a list:

List(1,2,3,4,5,6)

that I would like to to convert to the following map:

Map(1->2,3->4,5->6)

How can this be done?

Answer 1

Mostly resembles @Vakh answer, but with a nicer syntax:

val l = List(1,2,3,4,5,6)
val m = l.grouped(2).map { case List(key, value) => key -> value}.toMap
// Map(1 -> 2, 3 -> 4, 5 -> 6)

Answer 2

Try:

val l = List(1,2,3,4,5,6)
val m = l.grouped(2).map(l => (l(0), l(1))).toMap