public IEnumerable <int> Problem13()
{
var list = new List <List <int> >();
var fileLines = File.ReadAllLines("C:\\Phil\\PE\\ProjectEuler\\ProjectEuler\\Problems\\BigNumbers.txt").ToList();
var nums = fileLines.Select(BigNumberHelper.GetAsListRepresentingNumber).ToList();
return(BigNumberHelper.AddListRepresentingNumbers(nums).ToArray().Reverse().Take(10));
}
public int Problem25()
{
List <int> result = new List <int>();
List <int> prevprev = BigNumberHelper.GetAsListRepresentingNumber(1);
List <int> prev = BigNumberHelper.GetAsListRepresentingNumber(1);
int n = 2;
while (result.Count() < 1000)
{
result = BigNumberHelper.AddListRepresentingNumbers(prevprev, prev);
prevprev = prev;
prev = result;
n++;
}
return(n);
}
public void Problem43()
{
var list = this.GetPerms(0, 10).Select(x => new { Orig = x, Split = this.Split(x, 3) });
var hmm = list.
Select(x => new
{
x.Orig,
Split = x.Split.Item2.
Aggregate(x.Split.Item1.ToEnumerable(), (y, i) => y.Concat(y.Last().Skip(1).Concat(i))).Skip(1)
}
);
var ooo = hmm.Select(x => new { x.Orig, Nums = x.Split.Select(MathsHelper.ConvertToDecimal) });
var primes = MathsHelper.GetPrimesUpTo(17).ToList();
var interesting = ooo.Where(x => x.Nums.Zip(primes, (a, b) => a % b).All(y => y == 0)).ToList();
var thingy = interesting.Select(x => x.Orig.Reverse().ToList()).ToList();
var hello = BigNumberHelper.AddListRepresentingNumbers(thingy);
}