static int KeyLengthSelection(string text)
{
Console.Write("Discard single-occurence key lengths (1/0)?> ");
bool discardSingle = int.Parse(Console.ReadLine()) != 0;
Repetition[] repetitions = Repetition.GetTextRepetitions(text);
Dictionary <int, int> keyLengthWeightings = KeyLengthDeduction.GetKeyLengthWeights(repetitions, discardSingle);
Dictionary <int, int> factoredWeightings = KeyLengthDeduction.GetFactoredKeyLengthWeights(keyLengthWeightings);
Console.Write("View how many top lengths?> ");
int topLengthsCount = int.Parse(Console.ReadLine());
int requestCount = topLengthsCount < factoredWeightings.Count ? topLengthsCount : factoredWeightings.Count;
Dictionary <int, int> topLengths = ProgramMath.GetTopDictionaryKeysByValue(factoredWeightings, requestCount);
Console.WriteLine();
Console.WriteLine("(English average IOC is about 0.0667)");
Console.WriteLine("Top Key Lengths:");
foreach (int length in topLengths.Keys)
{
decimal ioc = KeyLengthDeduction.GetAverageIOCOfTextByOffset(text, length);
Console.WriteLine($"{length} (weighting = {topLengths[length]}) - Average IOC = {ioc}");
}
Console.Write("Select chosen key length> ");
int keyLengthSelection = int.Parse(Console.ReadLine());
return(keyLengthSelection);
}
