Initial data commit

Task/Exponentiation-operator/Scala/exponentiation-operator-1.scala

@@ -0,0 +1,43 @@
+object Exponentiation {
+  import scala.annotation.tailrec
+
+  @tailrec def powI[N](n: N, exponent: Int)(implicit num: Integral[N]): N = {
+    import num._
+    exponent match {
+      case 0 => one
+      case _ if exponent % 2 == 0 => powI((n * n), (exponent / 2))
+      case _ => powI(n, (exponent - 1)) * n
+    }
+  }
+
+  @tailrec def powF[N](n: N, exponent: Int)(implicit num: Fractional[N]): N = {
+    import num._
+    exponent match {
+      case 0 => one
+      case _ if exponent < 0 => one / powF(n, exponent.abs)
+      case _ if exponent % 2 == 0 => powF((n * n), (exponent / 2))
+      case _ => powF(n, (exponent - 1)) * n
+    }
+  }
+
+  class ExponentI[N : Integral](n: N) {
+    def \u2191(exponent: Int): N = powI(n, exponent)
+  }
+
+  class ExponentF[N : Fractional](n: N) {
+    def \u2191(exponent: Int): N = powF(n, exponent)
+  }
+
+  object ExponentI {
+    implicit def toExponentI[N : Integral](n: N): ExponentI[N] = new ExponentI(n)
+  }
+
+  object ExponentF {
+    implicit def toExponentF[N : Fractional](n: N): ExponentF[N] = new ExponentF(n)
+  }
+
+  object Exponents {
+    implicit def toExponent(n: Int): ExponentI[Int] = new ExponentI(n)
+    implicit def toExponent(n: Double): ExponentF[Double] = new ExponentF(n)
+  }
+}

Task/Exponentiation-operator/Scala/exponentiation-operator-2.scala

@@ -0,0 +1,7 @@
+  @tailrec def powI[N](n: N, exponent: Int, acc:Int=1)(implicit num: Integral[N]): N = {
+    exponent match {
+      case 0 => acc
+      case _ if exponent % 2 == 0 => powI(n * n, exponent / 2, acc)
+      case _ => powI(n, (exponent - 1), acc*n)
+    }
+  }