public void Add(string str, int value)
{
ReadOnlySpan <byte> bytes = Encoding.UTF8.GetBytes(str);
AutomataNode node = this.root;
while (bytes.Length > 0)
{
var key = AutomataKeyGen.GetKey(ref bytes);
if (bytes.Length == 0)
{
node = node.Add(key, value, str);
}
else
{
node = node.Add(key);
}
}
}
