public static Node DeleteLeafs(Node node)
{
if(node == null || node.IsLeafNode())
return null;
node.left = DeleteLeafs(node.left);
node.right = DeleteLeafs(node.right);
return node;
}
public static void ListAllPaths(Node parent, string str)
{
if(parent == null)
return;
str += parent.data;
if (parent.IsLeafNode())
{
Console.WriteLine(str);
return;
}
str += "-->";
ListAllPaths(parent.left, str);
ListAllPaths(parent.right, str);
}
