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  1. Prepare
  2. Functional Programming
  3. Introduction
  4. List Replication
  5. Discussions

List Replication

  • phillipraywood
     + 0 comments

    Scala, such that I am new to Scala and functional programming

    def getNumElements(s: Int, element: Int, result: List[Int]): List[Int] = {
    if (s > 0) {
        getNumElements(s - 1, element, result :+ element)
    } else {
        result
    }
}

def f(num: Int, arr: List[Int], result: List[Int] = List(),
      repeater: (Int, Int, List[Int]) => List[Int] = getNumElements
     ): List[Int] = {
    if (arr.size > 0) {
        f(num, arr.tail, result ::: repeater(num, arr.head, List()))
    } else {
        result
    }
}