Claim several data structures and algorithms for a group project

[jftung]

I am part of a group of four people. Our final project for one of our classes is to contribute to an open source project. We would like to work on this repository! We will be working on several data structures and algorithms, and we'd like to claim some now. Note that we will probably "claim" a few others later, depending on availability.

Currently "claimed" projects:
Trie
Radix Sort
Radix Tree
Red Black Tree
Threaded Binary Tree

[hollance]

Looking good!

Note that counting sort is also being worked on by #103

[jftung]

We've had to cut a few of the data structures due to time constraints (updated in my original comment), but our project is due May 6, so expect us to be done by then!

[jftung]

We should be ready for you to look over our work! I know that we're missing Playgrounds and unit tests, but I hope that our contribution is helpful in some way. Let us know what's good, what's bad, and what we can do to make your life easier.

[axptwig]

I'm still working on Red Black Trees, i need to fix a bug delete and make the implementation adhere to the style guide

[Thukor]

I won't be able to provide test files tonight, but as of now there should only be minor bugs (if any) in the implementation for Trie (assuming I didn't mess up big time somewhere).

[hollance]

Starting to look good, guys! :-)

Some small points:

• Can you rename the folder "Radix-Sort" to "Radix Sort" (drop the -)?
• Can you rename the folder "Red Black Trees" to "Red-Black Tree" (drop the s and add the -)?
• The Red-Black Tree seems not to take advantage of Swift's optionals. There's a lot of ! in there. It would be better to use if let to unwrap those, that is more Swift-like.
• The () are not necessary with if, so instead of if (something) you can simply write if something.
• Where did you get the images for Red-Black Tree and Threaded Binary Tree from? Did you make these yourself or did you copy them from somewhere? If the latter, please make sure you only use images whose license allows it and include a reference to the original. (We want to avoid any copyright violations.)

Let me know when you're done and I'll do the merge.

[jftung]

The folder names should be good now, and the if parentheses have been removed from all but the Red-Black Tree files. I made the Threaded Binary Tree images using www.draw.io, as mentioned at the bottom of the README. I'm not sure where my partner got the Red-Black tree images from. I'll get back to you.

[hollance]

Quick announcement: this repo is moving to https://github.com/raywenderlich/swift-algorithm-club -- everything should still work as before but some old links may not work anymore.

[jftung]

Quick update, @axptwig is still working on the Red-Black tree fixes, but other than that we should be all set.

[chris-pilcher]

This looks great! 👍

@jftung @axptwig are you still working on the Red-Black tree fixes? Also, did you find out where the Red-Black images came from?

[jftung]

Hi! I've lost contact with @axptwig, but if you want we can separate our different data structures into different forks so you can choose what you want to pull (l can make a new pull request).

[chris-pilcher]

Thanks for the update @jftung. I can merge this as a single pull request. I will do this tonight.

[jftung]

Excellent, thank you! Let me know if you need anything else.