added checking two strings are isomorphic or not

[aarzoopundir]

Issue Id you have worked upon -

Kindly write your answer here

Briefly explain your program logic -

we will count the number of occurrences of a particular character in both the string using two arrays, while we will compare the two arrays if at any moment with the loop the count of the current character in both strings becomes different we return false, else after the loop ends we return true.

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

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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]

@aarzoopundir, 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.

Create issue now and claim it.