[Solved] SCALA PAttern matching with recursive in LIST

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Your method should return an Int instead of Unit. To print elements iteratively, just insert a println underneath case head :: tail:

def multiply(list: List[Int]): Int = list match {
    case Nil => 1
    case n :: rest =>
      println(n)
      n * multiply(rest)
  }

multiply(List(1,2,3,4))
// 1
// 2
// 3
// 4
// res1: Int = 24

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solved SCALA PAttern matching with recursive in LIST