[Added Content] Tree traversal

[Ramya-korupolu]

PR Description

I have added a section on tree traversal in the ds-algorithms section. This includes the 3 main types of the traversals. -> Inorder traversal -> Preorder traversal -> Postorder traversal

Added images for better understanding along with code.

Related Issues

• Closes #1214

Checklist

• [x] I have gone through the contributing guide
• [x] I have updated my branch and synced it with project main branch before making this PR

Undertaking

I declare that:

1. The content I am submitting is original and has not been plagiarized.
2. No portion of the work has been copied from any other source without proper attribution.
3. The work has been checked for plagiarism, and I assure its authenticity.

I understand that any violation of this undertaking may have legal consequences that I will bear and could result in the withdrawal of any recognition associated with the work.

• [ ] I Agree

[Ramya-korupolu]

@animator Please review my Pull request

[ashitaprasad]

What is the source of images?

[Ramya-korupolu]

What is the source of images?

Javatpoint - Tree Traversal

[ashitaprasad]

Copyright images are not accepted.

[Ramya-korupolu]

I could replace the images with the images that I will create.

[ashitaprasad]

Sure you can do that and raise a new PR