private TrieNode Insert(char c, TrieNode node)
{
if (node.Contains(c)) return node.GetChild(c);
else
{
int n = Convert.ToByte(c) - TrieNode.ASCIIA;
TrieNode t = new TrieNode();
node.nodes[n] = t;
return t;
}
}
private TrieNode Contains(char c, TrieNode node)
{
if (node.Contains(c))
{
return node.GetChild(c);
}
else
{
return null;
}
}