readme.md

Trees Introduction Lab

This lab will require you to build a single function: findNode(). You will need to do so for a Tree class.

Getting started

1. Fork and clone this repository.

2. Navigate to the cloned repository's directory on your command line. Then, run the following command:

   npm install
   

   This will install the libraries needed to run the tests.

3. Open up the repository in VSCode. Follow the instructions below to complete the Lab.

Instructions

Complete the findNode() method inside of the Tree class in the index.js file. This method takes a single argument which is the data that can be found in a node. It should return either a reference to the node that contains that data or it should return null.

Example

For example, imagine you have the following tree structure. This means that a string of "A" is stored in the root node of the tree. The "A" node has three children: "B", "C", and "D".

    A
  ┌─┼─┐
  B C D──┐
┌─┼─┐    │
E F G    H

Assume that the tree is represented by the variable tree. You should then be able to run the code as follows:

tree.findNode("A"); //> { TreeNode data: "A", ... }
tree.findNode("G"); //> { TreeNode data: "G", ... }
tree.findNode("Y"); //> null

For more examples, refer to the tests.

Tests

To run the tests, you can run the following command from the command line. You will need to be in the root directory of your repository.

npm test

This will run the test output once.

Test watcher

If you'd like, you can have the tests run constantly. This means that each time you save your file, your tests will re-run. To do so, you can run the following:

npm run watch

Follow the on-screen prompts to exit out of the constant runner.

Run file

If you want to manually test out your file, you can do so by running the following command.

node index.js

Any output will be printed to your terminal.