Create a new folder print-nodes-top-view-binary-tree in Binary Tree .
Use implemented BinaryTree.
Problem is statement here: [print-nodes-top-view-binary-tree](https://www.gee

What is the issue that you are facing?
Every year new students are enrolled for different courses and there might be a need for buying books. But mostly the course books followed in our college are the same, for years. But due to lack of time and communication, students end up buying new books. It would be better if the books could be passed to the new course enrollees.

**How often do you

Create a better pattern for problems:

• Make sure each object implements its main function and export it.
• Don't stop the main if any of the classes didn't implement the function
• Put a warning with red letters whenever a problem wasn't added a main function
• Fail test if a class doesn't implement main function an export it?

Create a structure for every problem like this? :