public static void ThreadAndLambda()
{
using (Benchmark b = new Benchmark("Using threads via lambdas"))
{
Thread t1 = new Thread(() =>
{
Eratosthenes eratosthenes = new Eratosthenes();
Console.WriteLine($"Task 1 starting {DateTime.Now.ToShortTimeString()}");
Console.WriteLine(Primes.GetPrimeFactors(13187259, eratosthenes).PrettyPrint());
Console.WriteLine($"Task 1 ending {DateTime.Now.ToShortTimeString()}");
}
);
Thread t2 = new Thread(() =>
{
Eratosthenes eratosthenes = new Eratosthenes();
Console.WriteLine($"Task 2 starting {DateTime.Now.ToShortTimeString()}");
Console.WriteLine(Primes.GetPrimeFactors(41724259, eratosthenes).PrettyPrint());
Console.WriteLine($"Task 2 ending {DateTime.Now.ToShortTimeString()}");
}
);
t1.Start();
t2.Start();
t1.Join();
t2.Join();
}
}
private static int GetAmountDivisors(long number)
{
IEnumerator <long> primeFactors = Primes.GetPrimeFactors(number)
.GetEnumerator();
int amountDivisors = 0;
if (primeFactors.MoveNext())
{
amountDivisors++;
int amountCurrentFactors = 1;
long currentFactor = primeFactors.Current;
while (primeFactors.MoveNext())
{
long primeFactor = primeFactors.Current;
if (primeFactor == currentFactor)
{
amountCurrentFactors++;
}
else
{
amountDivisors *= amountCurrentFactors + 1;
amountCurrentFactors = 1;
currentFactor = primeFactor;
}
}
amountDivisors *= amountCurrentFactors + 1;
}
return(amountDivisors);
}
public void TestForExample()
{
byte[] expectedFactors = new byte[] { 5, 7, 13, 29 };
IEnumerable <long> primeFactors = Primes.GetPrimeFactors(13195);
Assert.AreEqual(expectedFactors, primeFactors);
}
static void Task2()
{
using (Benchmark b = new Benchmark("Task 2 prime factor find"))
{
Eratosthenes eratosthenes = new Eratosthenes();
Console.WriteLine($"Task 2 starting {DateTime.Now.ToShortTimeString()}");
Console.WriteLine(Primes.GetPrimeFactors(13187259, eratosthenes).PrettyPrint());
Console.WriteLine($"Task 2 ending {DateTime.Now.ToShortTimeString()}");
}
}
public override long Solution()
{
IEnumerator <long> primeFactor = Primes.GetPrimeFactors(600851475143)
.GetEnumerator();
while (primeFactor.MoveNext())
{
}
return(primeFactor.Current);
}
public static void TaskReturnValues()
{
using (Benchmark b = new Benchmark("Returning values from tasks"))
{
Task <string> task = Task.Run(() =>
{
Eratosthenes eratosthenes = new Eratosthenes();
return(Primes.GetPrimeFactors(13187259, eratosthenes).PrettyPrint());
});
Task <string> task2 = Task.Run(() =>
{
Eratosthenes eratosthenes = new Eratosthenes();
return(Primes.GetPrimeFactors(41724259, eratosthenes).PrettyPrint());
});
Console.WriteLine(task.Result);
Console.WriteLine(task2.Result);
}
}
