Question

How to check whether a number is perfect or not in Scala

Answer 1

// A perfect number is a positive integer that is equal to the sum
// of its positive divisors, excluding the number itself

object CheckWhetherNumberIsPerfectOrNot_Scala {
  def main(args: Array[String]): Unit = {
    val num = 8128

    if (isPerfectNumber(num))
      println(s"$num is a Perfect Number")
    else
      println(s"$num is Not a Perfect Number")
  }

  def isPerfectNumber(n: Int): Boolean = {
    var i = 1
    var sum = 0

    while (i < n) {
      if (n % i == 0) {
        sum += i
      }
      i += 1
    }
    sum == n
  }
}



/*
run:

8128 is a Perfect Number
    
*/

 

70+ SQL courses for beginners and professionals