static void Main(string[] args)
{
StringThing mainString = new StringThing();
//building a string from 1-4 billion
double size = 1000000;
double[] powersOf3 = new double[13];
for (int i = 0; i < powersOf3.Length; i++)
{
powersOf3[i] = Math.Pow(3, i + 1);
}
for (double i = 1; i < size; i++)
{
mainString.Append(i.ToString());
}
double Sum = 0;
for (int i = 0; i < powersOf3.Length; i++)
{
double temp = Function(powersOf3[i], mainString, size);
Sum += temp;
}
Console.WriteLine(Sum);
Console.ReadKey();
}
static double Function(double number, StringThing S, double size)
{
double Count = 0;
for (double i = 0; i < size; i++)
{
string temp = number.ToString();
string gen = S.Substring(i, temp.Length);
if (gen == temp)
{
Count++;
}
if (Count == number)
{
return(i);
}
}
throw new Exception("size not big enough");
}