Corrected the directory of Fractional Knapsack algorithm

[SudhanshuSuman]

Describe your change:

• Fractional knapsack uses a greedy approach and, hence, comes under greedy_methods and not under dynamic_programming.

• Moved the two fractional knapsack algorithm files to greedy_methods.

• Add an algorithm?

• Fix a bug or typo in an existing algorithm?

• Documentation change?

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 Python files are placed inside an existing directory.
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions.
• All function parameters and return values are annotated with Python type hints.
• All functions have doctests that pass the automated testing.
• 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}.

[CaedenPH]

Please can you update these changes in DIRECTORY.md

[SudhanshuSuman]

Please can you update these changes in DIRECTORY.md

Hey, @CaedenPH I noticed in contributing guidelines that we do not require updating the DIRECTORY.md file as GitHub Actions periodically autogenerates it. However, I have updated it now. Should I revert it back?

[CaedenPH]

Please can you update these changes in DIRECTORY.md

Hey, @CaedenPH I noticed in contributing guidelines that we do not require updating the DIRECTORY.md file as GitHub Actions periodically autogenerates it. However, I have updated it now. Should I revert it back?

Oh, I wasn't aware that there was a Github Action for this, I would assume that means you don't need to update DIRECTORY.md, however i assume that it wont make a difference now that you have updated it

[SudhanshuSuman]

Please can you update these changes in DIRECTORY.md

Hey, @CaedenPH I noticed in contributing guidelines that we do not require updating the DIRECTORY.md file as GitHub Actions periodically autogenerates it. However, I have updated it now. Should I revert it back?

Oh, I wasn't aware that there was a Github Action for this, I would assume that means you don't need to update DIRECTORY.md, however i assume that it wont make a difference now that you have updated it

Yes.
Can you review the pull request? It seems @Kush1101 was requested but he is not active.

[CaedenPH]

@cclauss Can you review? Looks good to me

[cclauss]

There is a git conflict below? Are the algorithms being modified or just moved?

[SudhanshuSuman]

There is a git conflict below? Are the algorithms being modified or just moved?

I have fixed the conflict, my branch was not up to date.
The algorithms are just moved.