protected virtual int GetAperiod(IList <double> digits)
{
var aperiod = 0;
var dictionary = new Dictionary <double, int>();
for (int i = 0; i < digits.Count; i++)
{
if (!dictionary.Any(d => Helpers.AboutEqual(d.Key, digits[i])) && !dictionary.ContainsKey(digits[i]))
{
dictionary.Add(digits[i], i);
}
else
{
if (aperiod < dictionary.Count)
{
aperiod = dictionary.Count;
}
i = (dictionary.ContainsKey(digits[i]) ? dictionary[digits[i]] : dictionary.First(d => Helpers.AboutEqual(d.Key, digits[i])).Value) + 1;
dictionary.Clear();
}
}
if (aperiod < dictionary.Count)
{
aperiod = dictionary.Count;
}
return(aperiod);
}
protected virtual int GetPeriod(IList <double> digits)
{
var period = 0;
var indexes = new List <int>();
for (int i = 1; i < digits.Count; i++)
{
if (Helpers.AboutEqual(digits[i], digits[0]))
{
indexes.Add(i);
}
}
for (int i = 0; i < indexes.Count; i++)
{
var validPeriod = true;
for (int j = indexes[i]; j < ((indexes[i] * 2 > digits.Count) ? digits.Count : indexes[i] * 2); j++)
{
if (!Helpers.AboutEqual(digits[j - indexes[i]], digits[j]))
{
validPeriod = false;
}
}
if (validPeriod)
{
period = indexes[i];
break;
}
}
return(period);
}