language: Scala (scala-2.10.0)
date: 848 days 22 hours ago
link:
visibility: public 
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object Main extends Application {
 
println("Euler Question #1: Add all the natural numbers below one thousand that are multiples of 3 or 5.")
println("warming up the JVM...")
val warmUpJvm = (1 until 100000).view.filter(i => (i % 3 == 0 || i % 5 == 0)).foldLeft(0)(_ + _)
var start = System.currentTimeMillis()
val answer1 = (1 until 1000).view.filter(i => (i % 3 == 0 || i % 5 == 0)).foldLeft(0)(_ + _)
var end = System.currentTimeMillis()
println("Answer: " + answer1)
println("view.filer approach: " + (end - start) + "ms")
println("Trying it another way, using a pattern match instead of filter...")
start = System.currentTimeMillis()
val answer2 = (1 until 1000).foldLeft(0){(total, x) => 
  x match {
    case i if (i % 3 == 0 || i % 5 ==0) => i + total
    case _ => total
  }
}
end = System.currentTimeMillis()
println("pattern matching approach: " + (end - start) + "ms")
 
}