Cosmos: Add Heap Sort

[ahhmarr]

Add the code for heap sort in any language ( C, C++, Java, Go, Python or any other)

The code should be placed at code/sorting/heap_sort

Note: multiple contributors can work on this issue as it has multiple parts (languages)

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[willshiel]

I could add Java

[endiliey]

Added heap sort implementation in c++ #51

[ansonb]

please review heap sort in python #62

[OFFLlNE]

Added heap in JavaScript #65
Ahhh.. JS is already done :/
@ahhmarr would be nice next time if you would also post here if you have done in any of the languages

[Saakshi29]

I could add in C.

[Troesler95]

I can add a Ruby implementation!

[AdiChat]

Go for it 👍

[Rishabh570]

can i do this in c

[AdiChat]

Sure @Rishabh570 Go for it 👍

[abhijeet010304]

I would like to work on this issue using C++ . Kindly assign this to me.

[abhijeet010304]

I would like to work on it in C++ and pyhton please assign it to me as a part of GSSoC 20

[arnavb]

It's already done in C++ (https://github.com/OpenGenus/cosmos/blob/master/code/sorting/src/heap_sort/heap_sort.cpp).