Scala example source code file (t2849.scala)

This example Scala source code file (t2849.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

array, m, m, n, n, sortedset, sortedset, test, treeset, treeset

The Scala t2849.scala source code

import scala.collection.immutable.SortedSet
import scala.collection.immutable.TreeSet

object Test {

  def main(args: Array[String]) {
    ticketExample
    similarExample
  }

  //def freeMBytes = Runtime.getRuntime.freeMemory / 1048576
  def totalMBytes = Runtime.getRuntime.totalMemory / 1048576

  val N = if (totalMBytes > 1000) 10000 else 4000
  val M = N / 10

  def ticketExample {
    var big = 100000
    
    var aSortedSet: SortedSet[Int] = TreeSet(big)
    
    for (i <- 1 until N) {
      aSortedSet = (aSortedSet - big) ++ (TreeSet(i, big - 1))
      big -= 1
      if (i % M == 0) {
        //println("big: "+big+", free memory: "+freeMBytes)
        aSortedSet.until(i)
      }
    }
  }

  def similarExample {
    var big = 100

    var aSortedSet: SortedSet[Int] = TreeSet(big)

    for (i <- 1 until N) {
      aSortedSet = (aSortedSet - big) ++ (TreeSet(i, big - 1)) + big
      big -= 1
      if (i % M == 0) {
        aSortedSet.until(i)
      }
    }
  }
  
}