private static string GetTreeNodeName(BSTTreeNode <T> node, Dictionary <BSTTreeNode <T>, string> dictionary)
{
if (dictionary.ContainsKey(node))
{
return(dictionary[node]);
}
var nodeName = $"node{_Count}";
dictionary[node] = nodeName;
_Count++;
return(nodeName);
}
public static string generateDotString(BSTTreeNode <T> root)
{
var contents = new List <string>();
var dictionary = new Dictionary <BSTTreeNode <T>, string>();
PreOrderTraversal(root, contents, dictionary);
foreach (var item in dictionary)
{
contents.Add($"{item.Value}[label = \"<f0> |<f1> {item.Key.Value}|<f2> \"];");
}
var result = $"digraph g {{\nnode [shape = record,height=.1]; {string.Join("\n", contents)} \n}}";
return(result);
}
private static void PreOrderTraversal(BSTTreeNode <T> root, List <string> contents, Dictionary <BSTTreeNode <T>, string> dictionary)
{
if (root != null)
{
var rootName = GetTreeNodeName(root, dictionary);
if (root.Left != null)
{
var leftName = GetTreeNodeName(root.Left, dictionary);
contents.Add($"\"{rootName}\":f0 -> \"{leftName}\":f1;");
}
if (root.Right != null)
{
var rightName = GetTreeNodeName(root.Right, dictionary);
contents.Add($"\"{rootName}\":f2 -> \"{rightName}\":f1;");
}
PreOrderTraversal(root.Left, contents, dictionary);
PreOrderTraversal(root.Right, contents, dictionary);
}
}
