public WordPool(ShortCalculator calculator, IEnumerable <string> words = null)
{
this.calculator = calculator;
this.words = words?.ToHashSet() ?? new();
this.keys = words.ToDictionary(w => w, w => calculator.Calc(w).ToHashSet());
}
public WordsShortCalculator(ShortCalculator calculator, IComparer <string> comparator)
{
this.calculator = calculator;
this.comparator = comparator;
}