public void Problem41()
{
string numberToPerm = "1";
List <string> permutations = new List <string>();
for (int i = 1; i < 9; i++)
{
int j = i + 1;
numberToPerm += j;
EulerHelperFunctions.GetPermutations(numberToPerm.ToCharArray(), numberToPerm.Length, permutations);
}
long largestPandigital = 0;
foreach (long number in permutations.ConvertAll(x => Int64.Parse(x)).OrderByDescending(x => x))
{
if (EulerHelperFunctions.IsPrime(number))
{
largestPandigital = number;
return;
}
}
Assert.Equal(7652413, largestPandigital);
}
public void Problem24()
{
string numberToPerm = "0123456789";
List <string> permutations = new List <string>();
EulerHelperFunctions.GetPermutations(numberToPerm.ToCharArray(), numberToPerm.Length, permutations);
Assert.Equal("2783915460", permutations.OrderBy(x => x).Skip(999999).First());
}