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-2.1.0.37	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.36	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.34	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.33	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.32	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.31	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.30	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.29	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.28	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.27	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.26	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.25	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.24	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.23	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.22	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.21	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.20	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.19	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.18	tracks/scala/exercises/nth-prime/example.scala
trackler-2.1.0.17	tracks/scala/exercises/nth-prime/example.scala