public bool Add(Difference difference, int startIndex)
{
if (startIndex == difference.Length)
{
if (EndOfWord)
{
return(false);
}
EndOfWord = true;
return(true);
}
DifferenceNode child;
char c = difference.CharAt(startIndex);
if (!Children.TryGetValue(c, out child))
{
child = new DifferenceNode();
Children.Add(c, child);
}
var result = child.Add(difference, startIndex + 1);
return(result);
}