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ryanlecompte/gist:6531437

Created September 11, 2013 23:53
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gistfile1.scala
scala> val items = 0 to 10
scala> val numGroups = 4
scala> items.zipWithIndex.foldLeft(Vector.fill(numGroups)(Vector.empty[Int])) { case (acc, (item, idx)) => val i = idx % acc.size; acc.updated(i, acc(i) :+ item) }
Vector(Vector(0, 4, 8), Vector(1, 5, 9), Vector(2, 6, 10), Vector(3, 7))
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