How to merge Arrays in Array of Arrays?

Question

I have an Array[Array[Int]] and what i want to do is, per two of the inside Arrays, merge their elements to one Array.

E.g. I have: Array(Array(1), Array(2), Array(3), Array(4))

What i want as a result is:

 Array(Array(1, 2) Array(3, 4))

Is something like this possible in scala?

jwvh · Accepted Answer · 2018-08-18 16:59:27Z

2

Try this.

myArrays.grouped(2)      //Iterator[Array[Array[Int]]]
        .map(_.flatten)  //Iterator[Array[Int]]
        .toArray         //Array[Array[Int]]

answered Aug 18, 2018 at 16:53

jwvh

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1 Comment

Oh, i didn't know grouped. That works like magic, thanks :)

y2k-shubham · Accepted Answer · 2018-08-18 16:53:53Z

0

Try this

val arrArr: Array[Array[Int]] = Array(
  Array(1),
  Array(2),
  Array(3),
  Array(4)
)
arrArr.grouped(2).map { l => l.flatten.toArray}.toArray

answered Aug 18, 2018 at 16:53

y2k-shubham

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