mnozenje polinoma

object App {
    class Polinom(koeficijenti: Array[Int]) {
        def *(A: Polinom): Polinom = {
            val n = this.level() + A.level() - 1
            val P1 = this.getK()
            val P2 = A.getK()

            var res = Array[Int]()
            for(i <- 0 until n)
                res = res :+ 0

            for(i <- 0 until this.level(); j <- 0 until A.level())
                res(i + j) += P1(i) * P2(j)

            new Polinom(res)
        }

        def level(): Int = this.koeficijenti.length
        def getK(): Array[Int] = koeficijenti
    }
    def main(args: Array[String]) {
        var A = new Polinom(Array(1, 2, 3))
        var B = new Polinom(Array(3, 2, 1))
        var C = A * B
    }
}