Scala Implementation of Euclidean Norm Algorithn

Jarvis@LNMIIT · Jarvis@LNMIIT · commit 88e480e94823 · 2014-08-07T19:46:38.000+05:30
diff --git a/Euclidean_Norm/Scala/aayushKumarJarvis/EuclideanNorm.scala b/Euclidean_Norm/Scala/aayushKumarJarvis/EuclideanNorm.scala
@@ -0,0 +1,18 @@
+/* SCALA Implementation of Euclidean Norm.
+Though the corner cases are covered. But still if you find any additions to it,
+please do add a test for it.
+Any improvements/tests in the code is highly appreciated.
+*/
+
+
+
+import scala.math
+
+class EuclideanNorm {
+
+  def calculateEuclideanNorm(listofIntegers: List[Int]):Int = {
+
+    val squaredElements = listofIntegers.map(x => x*x).sum
+    math.sqrt(squaredElements).toInt
+  }
+}
diff --git a/Euclidean_Norm/Scala/aayushKumarJarvis/EuclideanNormTest.scala b/Euclidean_Norm/Scala/aayushKumarJarvis/EuclideanNormTest.scala
@@ -0,0 +1,12 @@
+import org.scalatest.{Matchers, FunSuite}
+
+class calculateEuclideanNormTest extends FunSuite with Matchers {
+
+  test("Euclidean Norm should give") {
+    val objectForEuclideanNorm = new EuclideanNorm
+
+    objectForEuclideanNorm.calculateEuclideanNorm(List(1,2,3)) should be(3)
+    objectForEuclideanNorm.calculateEuclideanNorm(List(3,4)) should be(5)
+    objectForEuclideanNorm.calculateEuclideanNorm(List(1,1,1,1)) should be(2)
+  }
+}
