Prime.java

import java.util.stream.IntStream;
import java.util.stream.Stream;

/**
 * Created by amitra on 1/24/16.
 */
public class Sample {

  public static boolean isPrime(int n)
  {
    return n >1 && IntStream.range(2,n).noneMatch(i -> n % i ==0);
  }

  public static Double sumOfPrimeFunctional(int number,int sequence)
  {
    return Stream
        .iterate(number,e -> e+1)
        .filter(x -> isPrime(x))
        .limit(sequence)
        .map(Math::sqrt)
        .reduce(0.0,Double::sum);
  }
}