WEB: Scala InsertAT - ESS

   def insertAt (l: List[Int], i: Int, x: Int): List[Int] = {
     val neu:List [Int] = List()
     val v : Int = length(l)
     if (i==0 && x ==0) reverse(l)
     cutList(l, neu, i, x, v, neu)
   }
   def cutList(l:List[Int], m: List[Int], i: Int, x: Int, v: Int, empty: List[Int] ): List[Int]={
        val neu :List [Int] = List(x)
       if (length(l) != v-i){
       cutList(l.tail, l.head::m, i, x, v, empty)
       }
       else{
        insertAt (l ::: empty :::m , 0,0)
       }