adilakhter/coalesce.scala

## coalesce.scala
def coalesce(x:List[String], y:List[Int]):List[(String, Int)] =
  (x zip y).groupBy(_._1)
           .values
           .map{_.reduce((i,j) => (i._1, (i._2 + j._2)))}
           .toList
           .sorted
	def coalesce(x:List[String], y:List[Int]):List[(String, Int)] =
	(x zip y).groupBy(_._1)
	.values
	.map{_.reduce((i,j) => (i._1, (i._2 + j._2)))}
	.toList
	.sorted