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1. Commits on Jan 3, 2026

   • Update GCDUsingEuclidTest.java

     Swati89923

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   • Reorder import statement for assertEquals

     Swati89923

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   • Implement unit tests for GCDUsingEuclid

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     Swati89923

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2. Commits on Dec 28, 2025

   • Adding method to check wether a matrix is stochastic (#7184)

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     Dsannue

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3. Commits on Dec 27, 2025

   • Add Immutable HashMap implementation (#7183)

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     koushik-sai

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     Koushik Sai

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4. Commits on Dec 22, 2025

   • Add recursive factorial implementation with tests (#7178)

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     3 peopleauthored
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5. Commits on Dec 20, 2025

   • Implement LengthOfLastWord algorithm and add JUnit tests (#7057)

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     gopaljilab

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6. Commits on Dec 18, 2025

   • Add additional edge cases to GCD unit tests (#7174)

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     Saniya2701

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     DenizAltunkapan

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7. Commits on Dec 17, 2025

   • ExtendedEuclideanAlgorithm (#7172)

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     likhitharajuri03

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   • [FEAT] Add Thin Lens formula for ray optics (#7170)

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     koushik-sai

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     Koushik Sai

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8. Commits on Dec 14, 2025

   • Added program to check Lucky number (#6962)

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     TaranjeetSinghKalsi

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   • feat: Binary Tree to String algorithm added (Leetcode 606) (#6727)

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     mjk22071998

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   • Add Z-Algorithm for Linear-Time String Pattern Matching (#7124)

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     Utkarsh-patel26

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9. Commits on Dec 10, 2025

   • Add unit tests for graph algorithms (#7133) (#7156)

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     LucasAHorn

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     prashantdubeypng

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10. Commits on Dec 7, 2025

    • Add Snell's Law refraction algorithm (#7150)

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      Dsannue

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11. Commits on Dec 1, 2025

    • feat: implement One-Time Pad cipher (#6941) (#7096)

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      duvvuvenkataramana

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    • Added threaded binary tree (#6995)

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      Shewale41

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12. Commits on Nov 30, 2025

    • Added program to check either number is Evil or Odious (#6958)

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      TaranjeetSinghKalsi

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13. Commits on Nov 28, 2025

    • Added program to check Abundant number (#6961)

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      TaranjeetSinghKalsi

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    • feat: Added Gomory–Hu Tree (all-pairs min-cuts via n1 max-flows) (#6818)

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      SamXop123

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      DenizAltunkapan

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14. Commits on Nov 27, 2025

    • feat: add Valid Parentheses algorithm using Stack (#7117)

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      Gokul45-45

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15. Commits on Nov 22, 2025

    • Feature/centroid decomposition (#7086)

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      saikirankanakala

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16. Commits on Nov 19, 2025

    • backtracking: add unique permutation algorithm with test cases (#7078)

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      shreeya-g10

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17. Commits on Nov 17, 2025

    • feat: add Sudoku Solver using Backtracking (#7073)

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      Navadeep0007

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18. Commits on Nov 16, 2025

    • feat: add IndexedPriorityQueue implementation and tests (#7062)

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      SeungHyeokYoon

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    • feat: add Sieve of Eratosthenes algorithm (#7071)

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      Navadeep0007

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    • feat: add Count Set Bits algorithm (#7072)

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      Navadeep0007

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19. Commits on Nov 15, 2025

    • Add Power of Four Check using bit manipulation (#7065)

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      krishna-medapati

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    • Added program to check Smith number (#6955)

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      TaranjeetSinghKalsi

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    • Add Temperature Conversion Utility (#7066)

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      krishna-medapati

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20. Commits on Nov 6, 2025

    • [FEAT] Add Kinematics (SUVAT) equations (#7053)

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      Priyanshu1303d

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      Priyanshu1303d

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21. Commits on Nov 5, 2025

    • Add Trapping Rainwater problem implementation (Two Pointer Approach) (#6990)

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      Arzoo1701

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      DenizAltunkapan

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    • add CombinationSum and test (#6725)

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      Avaneeshakrishna

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    • chore: fix typos in src/test/java/com/thealgorithms/datastructures (#7045)

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      Lê Nam Khánh

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22. Commits on Nov 3, 2025

    • Added LU Decomposition Algorithm for matrix (#6834)

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      sourav-625

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