Add Euler method

[algobytewise]

Describe your change:

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

References

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• All new Java files are placed inside an existing directory.
• All filenames are in all uppercase characters with no spaces or dashes.
• All functions and variable names follow Java naming conventions.
• All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[algobytewise]

I was able to fix the error thrown by the code-formatter-check but I can't get it to pass the prettier-check. Could someone help me out?

[ayaankhan98]

Thanks for your contribution, please update the documentation according to Java docs standard.

refer to the documentation of this file in case you need any help regarding documentation.

also add tests

[algobytewise]

Thanks for the feedback. I've reformatted the documentation and I've implemented tests to validate that the numerical arguments are in range.

[danielUTM]

I just created another pull request for a separate addition that kept failing on the "Prettier / prettier" check with the same error message you are getting. I fixed the issue by changing branch I was comitting from to be called master and it fixed it, hope this helps you.

[algobytewise]

Thank you for this insight! I've tried it and it also solved the problem for me, see #2148 . I'll close this pull request & open an issue.