!Computer Science | Binary Search Tree

!NPM
!Jest
!JavaScript
!NodeJS

!Make & Leave Project

Binary Search Tree (BST) Implementation

This repository contains a JavaScript implementation of a Binary Search Tree (BST), providing foundational tree operations like insertion, deletion, searching, and traversal. The project supports traversal methods including in-order, pre-order, post-order, and level-order, along with balance checking and rebalancing.

Installation

``bash
npm install @tekksunn/cs-hashmap
`

Features

- insert(value) - Adds a new node to the BST while maintaining order.
- deleteItem(value) - Removes a node by value, handling cases with no children, one child, or two children.
- find(value) - Locates and retrieves a node based on its value.
- levelOrder(callback) - Traverses the tree in breadth-first level order, calling the provided callback function on each node.
- inOrder(callback) - Traverses the tree in in-order sequence (left-root-right) and calls the provided callback function on each node.
- preOrder(callback) - Traverses the tree in pre-order sequence (root-left-right) and calls the provided callback function on each node.
- postOrder(callback) - Traverses the tree in post-order sequence (left-right-root) and calls the provided callback function on each node.
- height(node) - Calculates and returns the height of the given node.
- depth(node) - Calculates and returns the depth of the given node relative to the tree’s root.
- isBalanced() - Checks if the tree is balanced.
- rebalance() - Rebalances the tree when it becomes unbalanced.
- prettyPrint()` - Visualizes the tree structure in a console-friendly format.

Contributing

Feel free to fork this project and create a pull request if you'd like to contribute. Please make sure to write tests for any new features you add.

License

This project is open source and available under the MIT License.