public static int GetDaysBetween(DateTime start, DateTime end)
{
return(NumericSources.YieldSequenceFromTo(start.Year, end.Year).ToList().SelectWithBorderCases(
x => GetDaysInFullYear(x),
x => start.DayOfYear,
x => end.DayOfYear).Sum());
}
public void CalculateSmallestMultiple()
{
var autod = new AutoDictionary <double>();
double result = 1;
// for the sequence from 1-to-Input, get prime factors for each and store new ones (or higher powers)
// Then get all factors and multiply them
// Back then I didn't know IEnumerable.Range o.o
NumericSources.YieldSequenceFromTo(1, Input).ForEach(x => autod.RegisterIfNew(x.GetPrimeFactors()));
autod.Dictionary.ForEach(x => result *= Math.Pow(x.Key, x.Value));
this.SmallestMultiple = result;
}
public void Calculate()
{
this.SumOfSquares1 = NumericSources.YieldSequenceFromTo(1, InputCount).Select(x => x * x).Sum();
this.SquareOfSums2 = Math.Pow(NumericSources.YieldSequenceFromTo(1, InputCount).Sum(), 2);
DifferenceResult = SquareOfSums2 - SumOfSquares1;
}