Lab #2

import _root_.scala

import _root_.scala.annotation.tailrec

object Lab2 {

  //Tasks1
  private def sumFunc1(list: List[Int], lenght: Int): Int = {
    if(lenght <= 0) 0
    else list.head + sumFunc1(list.tail, lenght - 1)
  }

  private def sumFunc2(indexList: List[Int], numList: List[Int]): Int = {
    if(indexList.isEmpty){
      println("indexList is empty")
      sys.exit(-1)
    }
    if(numList.isEmpty){
      println("numList is empty")
      sys.exit(-2)
    }

    for(i <- indexList.indices){

    }
    9
  }

  private def func3(numList: List[Int]): Int = {
    if (numList.isEmpty) {
      println("numList is empty")
      sys.exit(-3)
    }
    var minIndex: Int = 0
    for(i <- 0 until numList.length)
      if(numList(minIndex) > numList(i))
        minIndex = i

     minIndex
  }

  @tailrec
  private def func4(numList: List[Int], number: Int): Boolean = {
    if(numList.isEmpty) false
    else if(numList.head > number) true
    else func4(numList.tail, number)
  }

  @tailrec
  private def func5(numList: List[Int], number: Int, cnt: Int): Int = {
    var count: Int = cnt
    if(numList.isEmpty) count
    else if(numList.head < number){
      count += 1
      func5(numList.tail, number, count)
    }
    else func5(numList.tail, number, count)
  }




  def main(args: Array[String]): Unit = {
    val myList1: List[Int] = List(14, 42, 35, 64, 35, 65, 22, 31, 100, 4, 5, 37)
    val myList2: List[Int] = List(1, 2, 3, 4, 5, 6, 7, 8, 9, 0)
    val myList3: List[Int] = List(1, 2, 3, 4)

    //println(sumFunc1(myList2, if(myList2.length >= 5) 5 else myList2.length))
    //println(func3(myList1))
    println(func4(myList1, 100))
    println(func5(myList2, 5, 0))

    //println(sumFunc2(myList2 take 5))
    //println(sumFunc3(myList2))

  }





}