Helper library

2019/Scala/kamlib/Reader.scala

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+package kamlib
+
+import scala.io.Source
+
+/** File IO helper */
+object Reader {
+
+  /** Read file with the name specified in parameter */
+  def readList(filename: String): List[String] =
+  {
+    val src = Source.fromFile(getClass.getResource("/input1.txt").getFile)
+    val list = src.getLines().toList
+    src.close()
+    list
+  }
+
+  /** Read file with the name specified in parameter */
+  def readArray(filename: String): Array[String] =
+  {
+    val src = Source.fromFile(getClass.getResource("/input1.txt").getFile)
+    val array = src.getLines().toArray
+    src.close()
+    array
+  }
+
+  /** Read file with the name specified in parameter */
+  def readString(filename: String): String =
+  {
+    val src = Source.fromFile(getClass.getResource("/input1.txt").getFile)
+    val string = src.getLines().mkString
+    src.close()
+    string
+  }
+
+}

2019/Scala/kamlib/Wrapper.scala

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+package kamlib
+
+/** Wraps a function, measures the execution time, provides the result and time*/
+class Wrapper[A](function: => A)
+{
+  /** Saved results */
+  val tuple: (A, Int) = wrap(function)
+
+  /** Time measurement */
+  private[this] def wrap[A](function: => A): (A, Int) =
+  {
+    val evalStart = System.currentTimeMillis()
+    val result = function
+    val evalEnd = System.currentTimeMillis()
+    (result, (evalEnd-evalStart).toInt)
+  }
+
+  def print(): Unit =
+  {
+    println(s"Result: ${tuple._1} | Time: ${tuple._2}ms")
+  }
+  def result: A = tuple._1
+  def time: Int = tuple._2
+}
+
+object Wrapper
+{
+  def apply[A](function: => A): Wrapper[A] = new Wrapper[A](function)
+}