This is a C++ implementation of an AVL tree, which is a self-balancing binary search tree. An AVL tree maintains the balance factor of each node, which is the difference between the heights of its left and right subtrees. Whenever a node becomes unbalanced (its balance factor is either -2 or 2), the tree performs a rotation to restore the balance.

This project provides the following features:

• Insertion: You can insert a new node with a given key and value into the AVL tree. The tree will automatically balance itself after the insertion.
• Deletion: You can delete an existing node with a given key from the AVL tree. The tree will automatically balance itself after the deletion.
• Search: You can search for a node with a given key in the AVL tree. The tree will return the value of the node if it exists, or null otherwise.
• Traversal: You can traverse the AVL tree in different orders, such as pre-order, in-order, post-order, or level-order. The tree will print the keys and values of each node during the traversal.
• Display: You can display the AVL tree in a graphical way, using parentheses to indicate the structure of the tree and the balance factors of each node.

This project contains one file: main.cpp, which includes all the code and test cases for the AVL tree implementation. To compile and run the project, you can use the following commands:

g++ main.cpp -o avl_tree
./avl_tree

The output will show the results of each test case, such as the insertion, deletion, search, traversal, and display operations on the AVL tree.

This project is licensed under the MIT License - see the LICENSE file for details.