insertion at kth position

[manika-6303]

Issue Id you have worked upon -

Kindly write your answer here

Briefly explain your program logic -

insertion of an element in a linked list at a position. The next pointer of new node points to the node at that position and the next of the previous node points to the newnode.

Screenshots(Attach 2 screenshots of your own input and output) -

Checklist:

Eg - If your code follow the below guidelines. Kindly change [] to [x]

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

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

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

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

• [] I have commented my code.
  

• [] My code gives the correct output.
  

• [] 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.
  

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

[SarthakKeshari]

@manika-6303, Kindly create an issue first and then PR. And follow the PR template and contribution guidelines. I am not closing this PR since this was your first time. You may refer CONTRIBUTING.md and create an issue.