Implement new algorithms

[spirosmaggioros]

Algorithms folder looks empty. There are plenty of algorithms to add and we are happy to see new contributors do that!
You can also add test cases and comments for the algorithms.

[arthiondaena]

can i implement graph algorithms like FloydWarshall, BellmanFord, etc..

[spirosmaggioros]

Sure you can, you can either implement it inside the graph.h or in the algorithms folder, that depends on the implementation you have. Thanks for your interest :)

[dhruvabhat24]

Can i implement algorithms like

1. Selection sort.

2. Bubble sort.

3. Insertion sort.

4. Merge sort.

5. Quick sort.

6. Heap sort.

[spirosmaggioros]

@dhruvabhat24 I believe all the following algorithms do exist inside algorithms folder