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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

Randomized Closest Pair Algorithm

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- [ ] 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

Add Kruskal's Algorithm implementation

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## Summary This PR adds an implementation of **Kruskal's Minimum Spanning Tree (MST) algorithm** to the `graph` package. Kruskal’s algorithm is a classic greedy algorithm that finds the MST of...

RamsaiPolisetti

Enhance QuickSort documentation and structure

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Fixes #7143 Updated QuickSort implementation with detailed comments and improved clarity. - [ ] I have read [CONTRIBUTING.md](https://github.com/TheAlgorithms/Java/blob/master/CONTRIBUTING.md). - [ ] This pull request is all my own work --...

prasanth-30011

Implement LengthOfLastWord algorithm and add JUnit tests

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### Summary This pull request introduces the `LengthOfLastWord` algorithm under the `strings` package. It also includes comprehensive JUnit test coverage to ensure correctness and reliability. ### Details - **LengthOfLastWord.java** Implements...

gopaljilab

Update DIRECTORY.md

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Automatically generated update of the directory tree.

DenizAltunkapan

Optimize Factorial Algorithm (Iterative Implementation) and Add Comprehensive JUnit Test Suite

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### Summary This PR improves the existing `Factorial` implementation in the `divideandconquer` package by replacing the recursive algorithm with an optimized iterative version. The new implementation reduces space complexity, avoids...

trishajp38-source

docs: Update CONTRIBUTING.md to reference Discord instead of Gitter

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Fixes #7105 The CONTRIBUTING.md file currently references "TheAlgorithms room in GITTER" for community questions, but the repository has migrated to Discord for community communication. Updated the reference to point to...

vardhan30016

feat(matrix): Implement determinant calculation for square matrices

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

Rony-2004

Update contribution guidelines section in README

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Fixed formatting consistency by standardizing the link text to use lowercase 'guidelines' to match standard markdown link formatting conventions. - [ ] I have read [CONTRIBUTING.md](https://github.com/TheAlgorithms/Java/blob/master/CONTRIBUTING.md). - [ ] This...

vardhan30016