private static void Main()
{
var primeList = PrimeSieve.PrimesList(30);
foreach (var prime in primeList)
{
Console.Write(prime + " ");
}
var sieveOfEratosthenes = PrimeSieve.SieveOfEratosthenes(30);
var primes = sieveOfEratosthenes
.Select((x, y) => new
{
Index = y,
IsPrime = x
})
.Where(x => x.IsPrime && x.Index >= 1)
.Select(x => x.Index)
.ToList();
primes.ForEach(Console.WriteLine);
}