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TheAlgorithms/Java

This system is a comprehensive, open-source library of computer science algorithms and data structures implemented in Java. It provides a wide-ranging collection of ready-to-use implementations for sorting, searching, graph theory, dynamic programming, and various mathematical and geometric computations. The library also includes specialized modules for cryptography, signal processing, and machine learning, all supported by extensive test coverage to ensure correctness.

66.4

Adequate · 20 July 2026

72k

lines of production code

Java

primary language

33

bus factor · 811 authors in all

2

measurements over time

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How it got here

2016–2021 · comprehensive algorithm and data structure expansion

This period was defined by a massive expansion of the algorithms library, adding implementations for diverse topics including backtracking, ciphers, dynamic programming, and graph algorithms. The data structures package grew significantly with new queue, stack, tree, and hash map implementations. Concurrently, the project upgraded to Java 21 and established robust test coverage for the newly added algorithms.

30 changes

2022–2023 · test coverage expansion and new algorithm implementations

This period was dominated by the addition of comprehensive unit tests across nearly all existing algorithm and data structure packages, ensuring robust validation of the codebase. Concurrently, the project expanded its feature set by introducing new implementations for cryptography, geometry, bit manipulation, and distributed data structures.

38 changes

2024–2026 · algorithmic expansion and test coverage

This period focused on significantly expanding the library's algorithmic coverage by adding new implementations across diverse domains, including graph theory, linear algebra, physics simulations, and machine learning. Each new feature was accompanied by comprehensive unit test suites to ensure correctness and handle edge cases.

27 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 20 July 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 93cf85e1f4 — the exact code this score is about.
  • Scored under rubric rubric-2026.08.17. Score the same commit under that rubric and you get the same number.
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