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TheAlgorithms/Java

A collection of classic algorithms and data structures implemented in Java, intended for learning.

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What is it?

This repository implements a broad set of algorithms and data structures in Java, covering areas such as sorting, searching, and other classic computer science topics. Each implementation is written for educational purposes, so the code favors clarity over raw performance and may be slower than the Java standard library equivalents.

The project is part of The Algorithms community, which maintains parallel collections in several programming languages. It includes a contribution guide and a directory file that lists the implemented algorithms, and it is built and tested through continuous integration with code coverage reporting.

It suits developers who want readable Java reference code for studying algorithms or preparing for technical interviews.

Key features

  • 01Implements many classic sorting and searching algorithms in Java
  • 02Covers common data structures alongside algorithm implementations
  • 03Code is written for learning, emphasizing readability
  • 04Includes a directory listing of all implemented algorithms
  • 05Uses continuous integration with code coverage reporting

Use cases

  • Studying algorithms and data structures with Java code
  • Preparing for coding interviews that require algorithm knowledge
  • Looking up a reference implementation of a classic algorithm in Java

Quick start

  1. 1

    Open the project in Gitpod.io, a free online development environment, with one click

Things to know

  • The implementations are intended for learning and may be less efficient than the Java standard library.

In collections

Learning & education tools

Topics

#algorithms#data-structures#java#sorting#searching#education#algorithm#algorithm-challenges#algorithms-datastructures#hacktoberfest

FAQ

What is Java?
A collection of classic algorithms and data structures implemented in Java, intended for learning. This repository implements a broad set of algorithms and data structures in Java, covering areas such as sorting, searching, and other classic computer science topics. Each implementation is written for educational purposes, so the code favors clarity over raw performance and may be slower than the Java standard library equivalents.
Is Java free to use? What license does it have?
Java is open source under the MIT license. Check the license terms before using it in commercial products.
Is Java still maintained?
Actively maintained. The last commit to Java was on Oct 22, 2026.
What can I use Java for?
Studying algorithms and data structures with Java code Preparing for coding interviews that require algorithm knowledge Looking up a reference implementation of a classic algorithm in Java
How do I install Java?
Open the project in Gitpod.io, a free online development environment, with one click
Where can I get Java?
The source code and installation instructions are on GitHub: https://github.com/TheAlgorithms/Java

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