Question

How to write a recursive function that calculates power in Scala

Answer 1

object RecursiveFunctionThatCalculatePower_Scala {

  def main(args: Array[String]): Unit = {
    println(Power(2, 3)) // 8
    println(Power(2, 4)) // 16
    println(Power(3, 2)) // 9
    println(Power(3, 3)) // 27
    println(Power(5, 4)) // 625
    println(Power(0, 8)) // 0
    println(Power(9, 0)) // 1
  }

  def Power(x: Int, y: Int): Int = {
    if (y == 0) {
      1
    } else {
      x * Power(x, y - 1)
    }
  }
}

 
  
/*
run:
      
8
16
9
27
625
0
1
      
*/

 

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