Add more algorithms

[Yathartha22]

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[himanshuraj18]

Hey, @Yathartha22 I would like to add more algorithms here. If possible, assign it to me for hacktober fest. Thanks

[Yathartha22]

@himanshu18038 Thanks for your interest! 😄 You can just create a pull request directly and I will add the "hacktoberfest" label and merge it (if it's fine)

[hackbansu]

Added PR #28

[aman05382]

bubblesort algorithms in C #34

[aman05382]

Countingsort In C algorithms #35