Scala: How to create a new list from operation on adjacent elements of a list

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If I have a list like List(1,2,3,4), I want to create a new list that will be equivalent to,

List(1+2, 3+4) = List(3,7)

I need some opeartion to add adjacent numbers in a list and create new list from it. I looked at map, reduceLeft, foldLeft operations but could not find something that would accomplish this.

asked 1 min ago

user1935449

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Scala: How to create a new list from operation on adjacent elements of a list