public static Tree Read()
{
var size = int.Parse(Console.ReadLine());
var tree = new Tree();
var line = Console.ReadLine();
while (!string.IsNullOrEmpty(line))
{
var parentChildPair = line.Split(new char[] { ' ' });
var parentValue = int.Parse(parentChildPair[0]);
var childValue = int.Parse(parentChildPair[1]);
var parentNode = new TreeNode(parentValue);
var childNode = new TreeNode(childValue);
foreach (var node in tree.Nodes)
{
if (node.Value == parentValue)
{
parentNode = node;
}
if (node.Value == childValue)
{
childNode = node;
}
}
tree.Nodes.Add(childNode);
tree.Nodes.Add(parentNode);
childNode.Parent = parentNode;
parentNode.Children.Add(childNode);
line = Console.ReadLine();
}
return tree;
}
public TreeNode(int value)
{
this.Value = value;
parent = null;
children = new List<TreeNode>();
}