FizzBuzz implementation

FizzBuzz.scala

class FizzBuzz(divisors = Map(3->"Fizz", 5->"Buzz")) {

  def fizzBuzz(n: Int): String = {
    divisors.foldLeft(""){(res, d)=>
      n % d._1 match {
        case 0 => res + d._2
        case _ => res
      }
    } match {
      case "" => n.toString
      case str => str
    }
  }

}