Fix merge conflicts to merge change from #5080 (#8911)

* Input for user choose his Collatz sequence

Now the user can tell the algorithm what number he wants to run on the Collatz Sequence.

* updating DIRECTORY.md

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Co-authored-by: Hugo Folloni <hugofollogua07@gmail.com>
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>