Determinant of a Matrix

object prog3 {
def main(args: Array[String]): Unit = {
var determinant = 0
val array = Array.ofDim[Int](2, 2)
array(0)(0) = 1
array(0)(1) = 2
array(1)(0) = 3
array(1)(1) = 4

println("Matrix")
for (i <- 0 until 2) {
  for (j <- 0 until 2) {
    print(array(i)(j) + "\t")
  }
  println()
}

determinant = array(0)(0) * array(1)(1) - array(0)(1) * array(1)(0)

println("Determinant is " + determinant)

}
}