static void Main(string[] args)
{
List <Task> tasks = new List <Task>();
for (long i = 1; i < 999999; i++)
{
tasks.Add(Task.Factory.StartNew(() =>
{
long workNumber = i;
List <long> sequence = new List <long>();
NumberSenseTools.CollatzSequence(workNumber, sequence);
int sequenceCount = sequence.Count();
lock (lockObj)
{
if (sequence.Count() > longestChain)
{
longestChain = sequenceCount;
longestChainNumber = workNumber;
}
}
}));
}
while (true)
{
bool finished = true;
foreach (Task task in tasks)
{
if (task.IsCompleted)
{
continue;
}
else
{
finished = false;
break;
}
}
if (finished)
{
break;
}
}
Console.WriteLine(String.Format("The longest sequence is {0}, the starting number was {1}", longestChain, longestChainNumber));
Console.ReadKey();
}
static void Main(string[] args)
{
FactorEnumerator factors = new FactorEnumerator(testValue);
List <long> foundFactors = factors.ToList();
long highestCurrentPrime = 0;
foreach (long factor in foundFactors)
{
if (NumberSenseTools.IsAPrime(factor))
{
if (factor > highestCurrentPrime)
{
highestCurrentPrime = factor;
}
}
}
Console.WriteLine(String.Format("Anwser is {0}.", highestCurrentPrime));
Console.ReadKey();
}