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### What would you like to Propose? implementing the Contraction Hierarchies (CH) algorithm, a powerful preprocessing-based technique for extremely fast shortest path queries in large static graphs (e.g., road networks)....

DenizAltunkapan

- [ ] I have read [CONTRIBUTING.md](https://github.com/TheAlgorithms/Java/blob/master/CONTRIBUTING.md). - [ ] This pull request is all my own work -- I have not plagiarized it. - [ ] All filenames are...

anellykovalski