public void PrintAllPrimesThatAreAtLeastTheDoulbeOfThePrevious()
{
const int startPrime = 31;
// Int32.Max = 2147483647
const int targetNumber = 2100000000;
var primes = SieveOfEratosthenes.GetAllPrimeNumbers(targetNumber)
.SkipWhile(number => number < startPrime)
.ToArray();
var doubledPrimes = FilterDoublePrimes(primes);
_output.WriteLine($"All primes from {startPrime} up to {targetNumber} that are at least double the previous prime.");
foreach (var doubledPrime in doubledPrimes)
{
_output.WriteLine($"{doubledPrime},");
}
}
public void GetAllPrimes(int targetNumber, int[] expectedPrimeNumbers)
{
var actual = SieveOfEratosthenes.GetAllPrimeNumbers(targetNumber);
actual.Should().BeEquivalentTo(expectedPrimeNumbers);
}
