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Task/CSV-data-manipulation/Scala/csv-data-manipulation.scala

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+import scala.io.Source
+
+object parseCSV extends App {
+
+  val rawData = """|C1,C2,C3,C4,C5
+		  		   |1,5,9,13,17
+		  		   |2,6,10,14,18
+		  		   |3,7,11,15,19
+		  		   |20,21,22,23,24""".stripMargin
+
+  val data = Seq((Source.fromString(rawData).getLines()).map(_.split(",")).toSeq: _*)
+
+  val output = ((data.take(1).flatMap(x => x) :+ "SUM").mkString(",") +: // Header line
+    data.drop(1).map(_.map(_.toInt)). // Convert per line each array of String to array of integer
+    map(cells => (cells, cells.sum)). //Add sum column to assemble a tuple. Part 1 are original numbers, 2 is the sum
+    map(part => s"${part._1.mkString(",")},${part._2}")).mkString("\n")
+
+  println(output)
+  /* Outputs:
+
+C1,C2,C3,C4,C5,SUM
+1,5,9,13,17,45
+2,6,10,14,18,50
+3,7,11,15,19,55
+20,21,22,23,24,110
+
+*/
+}