Contents

object Prime {
  // The stream will cache calculated primes. This is nice for performance,
  // but not so nice for memory utilization.
  private lazy val primes: Stream[BigInt] =
    Stream.cons(BigInt(2), primes.map(b => new BigInt(b.bigInteger.nextProbablePrime)))

  def nth(n: Int): Option[Int] =
    if (n < 1) None
    else Some(primes.drop(n - 1).head.toInt)
}

Version data entries

198 entries across 198 versions & 1 rubygems

Version	Path
trackler-2.2.0.1	tracks/scala/exercises/nth-prime/example.scala
trackler-2.2.0.0	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.55	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.54	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.53	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.52	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.51	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.50	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.49	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.48	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.47	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.46	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.45	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.44	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.43	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.42	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.41	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.40	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.39	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.38	tracks/scala/exercises/nth-prime/example.scala