Initial data commit

Task/Text-processing-1/Scala/text-processing-1-2.scala

@@ -0,0 +1,42 @@
+object AltDataMunging {
+  def main(args: Array[String]) {
+    var totalSum = 0.0
+    var totalSize  = 0
+    var maxInvalidDate = ""
+    var maxInvalidCount = 0
+    var invalidDate = ""
+    var invalidCount = 0
+    val files = args map (new java.io.File(_)) filter (file => file.isFile && file.canRead)
+
+    files.iterator flatMap (file => Source fromFile file getLines ()) map (_.trim split "\\s+") foreach {
+      case Array(date, rawData @ _*) =>
+        val dataset = (rawData map (_ toDouble) iterator) grouped 2 toList;
+        val valid = dataset filter (_.last > 0) map (_.head)
+        val flags = spans(dataset map (_.last > 0)) map ((_, date))
+        println("Line: %11s  Reject: %2d  Accept: %2d  Line_tot: %10.3f  Line_avg: %10.3f" format
+                (date, 24 - valid.size, valid.size, valid.sum, valid.sum / valid.size))
+        totalSum += valid.sum
+        totalSize += valid.size
+        dataset foreach {
+          case _ :: flag :: Nil if flag > 0 =>
+            if (invalidCount > maxInvalidCount) {
+              maxInvalidDate = invalidDate
+              maxInvalidCount = invalidCount
+            }
+            invalidCount = 0
+          case _ =>
+            if (invalidCount == 0) invalidDate = date
+            invalidCount += 1
+        }
+    }
+
+    val report = """|
+                    |File(s)  = %s
+                    |Total    = %10.3f
+                    |Readings = %6d
+                    |Average  = %10.3f
+                    |
+                    |Maximum run(s) of %d consecutive false readings began at %s""".stripMargin
+    println(report format (files mkString " ", totalSum, totalSize, totalSum / totalSize, maxInvalidCount, maxInvalidDate))
+  }
+}