Data Structures and Algorithms

Clean example implementations of data structures and algorithms written in different languages.

Contribution!

Contributions are always welcome. Language doesn't matter. Just make sure you're implementing an algorithm.
PRs are welcome. To begin developing, follow the structure:

Algorithm-Type/algorithm_name/language-name/file_name.extension

e.g

Sorting/bubble_sort/python/bubble_sort.py
If there is an implementation of the same algorithm in your language, do not give a PR for that.
Please include a description for the algorithm that you are implementing. It doesn't matter if it's copied from somewhere as long as it helps people that are learning new algorithm.
Graphical examples would be very helpful too.
Don't forget to include tests.
Don't remove previous implementations of algorithms. Just add a new file with your own implementation.
Beautify and clean up your code for easier reading

Curated list of resources dealing with algorithms.

Sites
Online classes (Free)
- Coursera
  - Introduction to algorithms Part 1
  - Algorithms specialization 4 courses
- Khan Academy
  - Algorithms
- Udacity
  - Computability, Complexity & Algorithms
  - Intro to algorithms
- EdX
Coding Practice Sites
- HackerRank
- HackerEarth
- SPOJ
- TopCoder
- CodeChef
- Codeforces
- Project Euler
- LeetCode
- CodinGame
- CodeWars
- Coderbyte
- HireVue
- FreeCodeCamp
- CodeSignal