/// <summary>
/// Adds a word to the <see cref="SuffixTree"/>.
/// </summary>
/// <param name="word">The word to add.</param>
public void Add(string word)
{
var curNode = Root;
bool wordWasAlreadyAdded = false;
for (int i = word.Length - 1; i >= 0; i--)
{
if (curNode.children.ContainsKey(word[i]))
{
if (i == 0)
{
wordWasAlreadyAdded = curNode.children[word[i]].IsTerminal;
curNode.children[word[i]].IsTerminal = true;
}
else
{
curNode = curNode.children[word[i]];
}
}
else
{
if (i == 0)
{
var newNode = new SuffixTreeNode(word[i], true);
curNode.children.Add(word[i], newNode);
}
else
{
var newNode = new SuffixTreeNode(word[i], false);
curNode.children.Add(word[i], newNode);
curNode = curNode.children[word[i]];
}
}
}
if (!wordWasAlreadyAdded)
{
Count++;
}
}
/// <summary>
/// Creates a new instance of the <see cref="SuffixTree"/> class.
/// </summary>
public SuffixTree()
{
Root = new SuffixTreeNode(default(char), false);
}
/// <summary>
/// Removes all words from the <see cref="SuffixTree"/>.
/// </summary>
public void Clear()
{
Root = new SuffixTreeNode(default(char), false);
Count = 0;
}