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);
}