public static void PrintNode(TreeNode root)
{
int maxLevel = BTreePrinter.MaxLevel(root);
PrintNodeInternal(new List <TreeNode>()
{
root
}, 1, maxLevel);
}
private static int MaxLevel(TreeNode node)
{
if (node == null)
{
return(0);
}
return(Math.Max(BTreePrinter.MaxLevel(node.Left), BTreePrinter.MaxLevel(node.Right)) + 1);
}
private static void PrintNodeInternal(List <TreeNode> nodes, int level, int maxLevel)
{
if (nodes.Count == 0 || BTreePrinter.IsAllElementsNull(nodes))
{
return;
}
int floor = maxLevel - level;
int endgeLines = (int)Math.Pow(2, (Math.Max(floor - 1, 0)));
int firstSpaces = (int)Math.Pow(2, (floor)) - 1;
int betweenSpaces = (int)Math.Pow(2, (floor + 1)) - 1;
BTreePrinter.PrintWhitespaces(firstSpaces);
List <TreeNode> newNodes = new List <TreeNode>();
foreach (TreeNode node in nodes)
{
if (node != null)
{
Console.Write(node.Data);
newNodes.Add(node.Left);
newNodes.Add(node.Right);
}
else
{
newNodes.Add(null);
newNodes.Add(null);
Console.Write(" ");
}
BTreePrinter.PrintWhitespaces(betweenSpaces);
}
Console.WriteLine();
for (int i = 1; i <= endgeLines; i++)
{
for (int j = 0; j < nodes.Count; j++)
{
BTreePrinter.PrintWhitespaces(firstSpaces - i);
if (nodes[j] == null)
{
BTreePrinter.PrintWhitespaces(endgeLines + endgeLines + i + 1);
continue;
}
if (nodes[j].Left != null)
{
Console.Write("/");
}
else
{
BTreePrinter.PrintWhitespaces(1);
}
BTreePrinter.PrintWhitespaces(i + i - 1);
if (nodes[j].Right != null)
{
Console.Write("\\");
}
else
{
BTreePrinter.PrintWhitespaces(1);
}
BTreePrinter.PrintWhitespaces(endgeLines + endgeLines - i);
}
Console.WriteLine();
}
PrintNodeInternal(newNodes, level + 1, maxLevel);
}
public void Print()
{
BTreePrinter.Print(this);
}