CODEWITHSUNDEEP
listscalafunctional-programming
Nexon
Nexon

Reputation: 326

How to sum pairs of values in a List in Scala?

Lets say I have a List:

val list = List(1, 3, 4, 5, 6)

How to sum each element with the next one to create a List of summed values of pairs? In my example I want to get:

List(4, 7, 9, 11)

What operations should I write to do this in a functional fashion?

Upvotes: 0

Views: 165

Answers (1)

Nexon
Nexon

Reputation: 326

Okay, so after a bit of search I found the sliding(...) function:

val list = List(1, 3, 4, 5, 6)
list.sliding(2).toSeq.map(_.sum) //List(4, 7, 9, 11)

And this works well

Upvotes: 3

Related Questions