Data commit

Task/Text-processing-Max-licenses-in-use/Scala/text-processing-max-licenses-in-use-1.scala

@@ -0,0 +1,29 @@
+import java.io.{BufferedReader, InputStreamReader}
+import java.net.URL
+
+object License0 extends App {
+  val url = new URL("https://raw.githubusercontent.com/def-/nim-unsorted/master/mlijobs.txt")
+  val in = new BufferedReader(new InputStreamReader(url.openStream()))
+
+  val dates = new collection.mutable.ListBuffer[String]
+  var (count: Int, max: Int) = (0, Int.MinValue)
+  var line: String = _
+
+  while ( {line = in.readLine; line} != null) {
+    if (line.startsWith("License OUT ")) count += 1
+    if (line.startsWith("License IN ")) count -= 1 // Redundant test when "OUT"
+    if (count > max) { // Fruitless execution when "License IN "
+      max = count
+      val date = line.split(" ")(3)
+      dates.clear()
+      dates += date
+    } else if (count == max) {
+      val date = line.split(" ")(3)
+      dates += date
+    }
+  }
+
+  println("Max licenses out: " + max)
+  println("At time(s): " + dates.mkString(", "))
+
+}

Task/Text-processing-Max-licenses-in-use/Scala/text-processing-max-licenses-in-use-2.scala

@@ -0,0 +1,25 @@
+import scala.collection.mutable.ListBuffer
+
+object License1 extends App {
+  val src = io.Source.fromURL("https://raw.githubusercontent.com/def-/nim-unsorted/master/mlijobs.txt")
+
+  val dates = new ListBuffer[String]
+  var (max, count) = (Int.MinValue, 0)
+
+  src.getLines.foreach { line =>
+    def date = line.split(" ")(3)
+
+    if (line.startsWith("License OUT ")) {
+      count += 1
+      if (count > max) {
+        max = count
+        dates.clear
+      }
+      if (count == max) dates += date
+    } else if (line.startsWith("License IN ")) count -= 1
+  }
+
+  println("Max licenses out: " + max)
+  println("At time(s): " + dates.mkString(", "))
+
+}

Task/Text-processing-Max-licenses-in-use/Scala/text-processing-max-licenses-in-use-3.scala

@@ -0,0 +1,47 @@
+import scala.annotation.tailrec
+
+object License2 extends App {
+  type resultTuple = (Int /*max*/, Int /*count*/, List[String] /*dates*/ )
+
+  val src = io.Source.fromURL(
+    "https://raw.githubusercontent.com/def-/nim-unsorted/master/mlijobs.txt")
+  val iter = src.getLines()
+  val (max, count, dates) = loop(Int.MinValue, 0, Nil)
+
+  def lineToResult(tuple: (resultTuple, String)): resultTuple = {
+    val ((max, count, dates), line) = tuple
+
+    def date = line.split(" ")(3)
+
+    if (line.startsWith("License OUT ")) {
+      if (count + 1 > max) (count + 1, count + 1, List(date))
+      else if (count + 1 == max) (max, max, dates :+ date)
+      else (max, count + 1, dates)
+    } else if (line.startsWith("License IN ")) tuple._1.copy(_2 = count - 1)
+    else tuple._1
+  }
+
+  @tailrec
+  private def loop(tuple: resultTuple): resultTuple = {
+    def lineToResult(tuple: (resultTuple, String)): resultTuple = {
+      val ((max, count, dates), line) = tuple
+
+      def date = line.split(" ")(3)
+
+      if (line.startsWith("License OUT ")) {
+        if (count + 1 > max) (count + 1, count + 1, List(date))
+        else if (count + 1 == max) (max, max, dates :+ date)
+        else (max, count + 1, dates)
+      } else if (line.startsWith("License IN ")) tuple._1.copy(_2 = count - 1)
+      else tuple._1
+    }
+
+    if (iter.hasNext)
+      loop(lineToResult(tuple, iter.next()))
+    else tuple
+  }
+
+  println("Max licenses out: " + max)
+  println("At time(s): " + dates.mkString(", "))
+
+}

Task/Text-processing-Max-licenses-in-use/Scala/text-processing-max-licenses-in-use-4.scala

@@ -0,0 +1,26 @@
+object License3 extends App {
+  type resultTuple = (Int /*max*/, Int /*count*/, List[String] /*dates*/ )
+
+  val src = io.Source.fromURL("https://raw.githubusercontent.com/def-/nim-unsorted/master/mlijobs.txt")
+
+  val (max, count, dates): resultTuple =
+    src.getLines().foldLeft(Int.MinValue, 0, Nil: List[String]) {
+      case ((max: Int, count: Int, dates: List[String]), line: String)
+        if line.startsWith("License OUT ") =>
+        def date = line.split(" ")(3)
+
+        if (count + 1 > max) (count + 1, count + 1, List(date))
+        else if (count + 1 == max) (max, max, dates :+ date)
+        else (max, count + 1, dates)
+
+      case (resultPart: resultTuple, line: String)
+        if line.startsWith("License IN ") =>
+        resultPart.copy(_2 = resultPart._2 - 1)
+
+      case (resultPart, _) => resultPart
+    }
+
+  println("Max licenses out: " + max)
+  println("At time(s): " + dates.mkString(", "))
+
+}