fix: memory issues in counting_sort.cpp

[vil02]

Description of Change

There are several problems with the current implementation of counting_sort.cpp:

• memory allocated by creating *Count is uninitialized and not deleted,
  

  C-Plus-Plus/sorting/counting_sort.cpp

  Line 29 in 23b133a

  int *Count = new int[max - min + 1];

• memory allocated by creating *Sorted_Arr is not deleted.
  

  C-Plus-Plus/sorting/counting_sort.cpp

  Line 27 in 23b133a

  int *Sorted_Arr = new int[N];

This PR fixes that.

Checklist

• Added description of change
• PR title follows semantic commit guidelines
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I acknowledge that all my contributions will be made under the project's license.

Notes:
This PR fixes memory issues in counting_sort.cpp.

[CarlosZoft]

LGTM 🔥

[github-actions]

This pull request has been automatically marked as abandoned because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[vil02]

@Panquesito7, @realstealthninja: please dont-close.