added solution for sort and print boundary elements of a 2d matrix

[Karan0009]

Issue Id : #212 Kindly write your answer here

solution:

1. print the matrix
2. extract the boundary elements
3. sort this array
4. then just replace the boundary elements of the matrix when printing the solution with the elements in the boundary elements array

screenshots of the solution:

All the conditions should be fulfilled for considering your code for merging -

• [x] I have mentioned the question as comment in my solution file.
  

• [x] My code follows the guidelines of this project.
  

• [x] I have performed a self-review of my own code.
  

• [x] I have commented my code.
  

• [x] My code gives the correct output.
  

• [x] I confirm that I have not copied the code from anywhere. In case its found that I have copied even after successful merge then I can be banned from the repository and hacktoberfest.
  

• [x] I affirm that I strictly follow contributing guidelines and code of conduct.

[Karan0009]

Hey @SarthakKeshari , I have added comments in the logical section.

[Karan0009]

🥳