public long Run()
{
var digits = Naturals.Get()
.SelectMany(n => n.GetDigits().Reverse())
.Take(1000000)
.ToList();
return(digits [0] * digits [9] * digits [99] *
digits [999] * digits [9999] * digits [99999] *
digits [999999]);
}
public static IEnumerable <PythagoreanTriplet> GetAll()
{
return
(from b in Naturals.Get(2)
from a in Enumerable.Range(1, b - 1)
let powA = Math.Pow(a, 2)
let powB = Math.Pow(b, 2)
let powC = powA + powB
let c = Math.Sqrt(powC)
where c % 1 == 0
select new PythagoreanTriplet {
A = a, B = b, C = (int)c
});
}