added calculateThePermutationOfNObjectsTakenRAtATime in scala (#5577)

* checkArmstrongNumber in Scala

* CombinationCalculator in Scala

* CombinationCalculator in Scala deleted

* calculateTheCombinationOfNObjectsTakenRAtATime in Scala added

---------

Co-authored-by: Harsh Raj <harshraj8843@gmail.com>

program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/calculateTheCombinationOfNObjectsTakenRAtATime.scala

@@ -0,0 +1,18 @@
+import scala.io.StdIn.readInt
+
+object calculateTheCombinationOfNObjectsTakenRAtATime {
+  def main(args: Array[String]): Unit = {
+    val n = readInt()
+    val r = readInt()
+    println(combination(n, r))
+  }
+
+  def factorial(n: Int): BigInt = {
+    if (n == 0) 1
+    else n * factorial(n - 1)
+  }
+
+  def combination(n: Int, r: Int): BigInt = {
+    factorial(n) / (factorial(r) * factorial(n - r))
+  }
+}