Add Algorithms & Data Structures collection

[ajay-dhangar]

Please confirm this pull request meets the following requirements:

• I followed the contributing guidelines: https://github.com/github/explore/blob/main/CONTRIBUTING.md.
• This change is not self-promotion.

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• Suggesting edits to an existing topic or collection
• Curating a new topic or collection
• Something that does not neatly fit into the binary options above

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Editing an existing topic or collection

I'm suggesting these edits to an existing topic or collection:

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• Content (and my changes are in index.md)

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Curating a new topic or collection

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Algorithms and data structures are fundamental to computer science education and software engineering. While many individual repositories exist across GitHub, developers and students often lack a centralized, language-agnostic hub for high-quality implementations and study resources. This collection brings together well-maintained open-source projects, visualization tools, and interview preparation guides across multiple popular programming languages (Python, Java, JavaScript, C++) to help the developer community learn, practice, and master core computational problem-solving skills.

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• My suggested edits are not about an existing topic or collection, or at least not a single one
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[github-actions]

Maintainer triage

Collection algorithms-and-data-structures

Item	Stars	Last push	Owner type	Notes
ajay-dhangar/algo	106	2026-08-11	User	⚠️ possible self-submission
codeharborhub/dsa	1	2026-04-06	Organization	–
TheAlgorithms/Python	223,635	2026-08-03	Organization	–
TheAlgorithms/Java	66,139	2026-08-10	Organization	–
trekhleb/javascript-algorithms	196,424	2026-07-26	User	–
jwasham/coding-interview-university	358,356	2025-08-28	User	–