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()); }