From abb8efd2eb7fac88ab30dbc82975ee859a9fde27 Mon Sep 17 00:00:00 2001
From: adelasaripova <adelya19.2001@mail.ru>
Date: Sat, 23 Mar 2024 23:43:54 +0300
Subject: [PATCH 1/4] checkArmstrongNumber in Scala

---
 .../checkArmstrongNumber.scala                | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 program/program/check-armstrong-number/checkArmstrongNumber.scala

diff --git a/program/program/check-armstrong-number/checkArmstrongNumber.scala b/program/program/check-armstrong-number/checkArmstrongNumber.scala
new file mode 100644
index 000000000..bd8e26239
--- /dev/null
+++ b/program/program/check-armstrong-number/checkArmstrongNumber.scala
@@ -0,0 +1,19 @@
+import scala.io.StdIn.readInt
+
+object checkArmstrongNumber {
+  def isArmstrongNumber(number: Int): Boolean = {
+    val digits = number.toString.map(_.asDigit)
+    val numberOfDigits = digits.length
+    val sumOfPowers = digits.map(math.pow(_, numberOfDigits)).sum
+    sumOfPowers == number
+  }
+
+  def main(args: Array[String]): Unit = {
+    val number = readInt()
+    if (isArmstrongNumber(number)) {
+      println(s"Armstrong Number")
+    } else {
+      println(s"Not Armstrong Number")
+    }
+  }
+}
\ No newline at end of file

From b1e2f41ea7bee96103c9f24212a06bc7d908bc4d Mon Sep 17 00:00:00 2001
From: adelasaripova <adelya19.2001@mail.ru>
Date: Sun, 24 Mar 2024 21:18:28 +0300
Subject: [PATCH 2/4] CombinationCalculator in Scala

---
 .../CombinationCalculator.scala                | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/CombinationCalculator.scala

diff --git a/program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/CombinationCalculator.scala b/program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/CombinationCalculator.scala
new file mode 100644
index 000000000..5a0463891
--- /dev/null
+++ b/program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/CombinationCalculator.scala
@@ -0,0 +1,18 @@
+import scala.io.StdIn.readInt
+
+object CombinationCalculator {
+  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))
+  }
+}

From 9cc852f448b0e94f1aad0a1d1468a1021e0ebc13 Mon Sep 17 00:00:00 2001
From: adelasaripova <adelya19.2001@mail.ru>
Date: Sun, 24 Mar 2024 21:20:39 +0300
Subject: [PATCH 3/4] CombinationCalculator in Scala deleted

---
 .../CombinationCalculator.scala                | 18 ------------------
 1 file changed, 18 deletions(-)
 delete mode 100644 program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/CombinationCalculator.scala

diff --git a/program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/CombinationCalculator.scala b/program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/CombinationCalculator.scala
deleted file mode 100644
index 5a0463891..000000000
--- a/program/program/calculate-the-combination-of-n-objects-taken-r-at-a-time/CombinationCalculator.scala
+++ /dev/null
@@ -1,18 +0,0 @@
-import scala.io.StdIn.readInt
-
-object CombinationCalculator {
-  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))
-  }
-}

From 8dc751b5d9ea0b82ce115296adf07c30f49f85ec Mon Sep 17 00:00:00 2001
From: adelasaripova <adelya19.2001@mail.ru>
Date: Sun, 24 Mar 2024 21:35:50 +0300
Subject: [PATCH 4/4] findDigitalRootOfANumber in Scala added

---
 .../findDigitalRootOfANumber.scala            | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 program/program/find-digital-root-of-a-number/findDigitalRootOfANumber.scala

diff --git a/program/program/find-digital-root-of-a-number/findDigitalRootOfANumber.scala b/program/program/find-digital-root-of-a-number/findDigitalRootOfANumber.scala
new file mode 100644
index 000000000..69898287e
--- /dev/null
+++ b/program/program/find-digital-root-of-a-number/findDigitalRootOfANumber.scala
@@ -0,0 +1,20 @@
+import scala.annotation.tailrec
+
+object findDigitalRootOfANumber {
+  def main(args: Array[String]): Unit = {
+    val number = 942
+    println(digitalRoot(number))
+  }
+
+  def sumOfDigits(n: Int): Int = {
+    if (n == 0) 0
+    else n % 10 + sumOfDigits(n / 10)
+  }
+
+  @tailrec
+  def digitalRoot(n: Int): Int = {
+    val sum = sumOfDigits(n)
+    if (sum < 10) sum
+    else digitalRoot(sum)
+  }
+}