private Sequence(Sequence parent, WordTree wordTree, int row, int col)
{
_puzzle = parent._puzzle;
_wordTree = wordTree;
_parent = parent;
_row = row;
_col = col;
Length = parent.Length + 1;
}
public Sequence(Puzzle puzzle, WordTree wordTree)
{
_puzzle = puzzle;
_wordTree = wordTree;
_parent = null;
_row = -1;
_col = -1;
_toString = string.Empty;
Length = 0;
}
private void Add(string word, int index)
{
if (index == word.Length)
{
IsWord = true;
return;
}
char c = char.ToUpperInvariant(word[index]);
if (!_children.TryGetValue(c, out var child))
{
child = new WordTree();
_children[c] = child;
}
child.Add(word, index + 1);
}
public Solver(WordTree wordTree)
{
_wordTree = wordTree ?? throw new ArgumentNullException(nameof(wordTree));
}