Closest Numbers for HackerRank

Closest.scala

def closestNumbers(s:String):String={    
    val sorted=s.split(" ").map(_.toInt).toList.sorted    
    val zip=sorted.zip(sorted.tail)
    
    val triples=for {
      (x,y)<-zip
    } yield (x,y,Math.abs(x-y)) 
    
    val (_,_,minDelta)=triples.minBy(_._3)
    
    val smallest=triples.filter(_._3==minDelta)            
    
    smallest.map{case (x,y,_)=>(s"$x $y")} mkString(" ")  
 }
 
  println(closestNumbers("-20 -3916237 -357920 -3620601 7374819 -7330761 30 6246457 -6461594 266854 100 150"))
  
  // -20 30 100 150