Data structures

This is a structured collection of C++ solutions to coding interview questions organized by data structure and algorithm topics (trees, arrays,...

A C++14 lock-free, multi-producer-multi-consumer queue library designed for ultra-low-latency inter-thread communication using circular buffers and...

KACTL is KTH Royal Institute of Technology's ICPC team reference document: a curated 25-page PDF of copy-pasteable C++ algorithms and data structures...

Eclipse Collections is a comprehensive Java collections framework offering optimized data structures (List, Set, Bag, Map, Multimap, BiMap, Stack,...

Robin-map is a header-only C++ library providing fast hash map and hash set implementations using robin hood hashing with open addressing. It serves...

Crossbeam provides a comprehensive toolkit for concurrent programming in Rust, offering lock-free data structures, channels, thread synchronization...

A comprehensive, community-translated collection of algorithms and data structures articles tailored for competitive programming, published at...

Boltons is a collection of 250+ pure-Python utilities and data structures that extend the Python standard library without external dependencies. It...

bon is a Rust derive macro and attribute macro crate for generating compile-time-checked builders for structs and functions, enabling named and...

A curated collection of learning resources and LeetCode problem patterns to help developers master data structures, algorithms, and technical...

heapless provides statically-allocated, heap-free data structures (Vec, HashMap, BinaryHeap, etc.) designed for embedded systems and no-std Rust...

LeetCode Patterns is a curated study guide and pattern-based learning platform for technical interview preparation, grouping coding problems by...

A comprehensive algorithm template library for competitive programming in Go, organized by topic (data structures, string algorithms, number theory,...

OI Wiki is a comprehensive, free, community-maintained knowledge base for competitive programming (ICPC/OI) covering algorithms, data structures,...

rpds provides fully persistent (immutable) data structures with structural sharing for Rust, including List, Vector, Stack, Queue, HashTrieMap/Set,...

Nutype is a Rust proc macro that adds validation and sanitization constraints to the newtype pattern, enabling compile-time and runtime guarantees...

Orama is a lightweight full-text, vector, and hybrid search engine that runs in browsers, Node.js, and edge environments with a <2kb footprint. It...

AlgoNote is a comprehensive Chinese-language learning manual covering algorithms, data structures, and 1000+ LeetCode problem solutions with detailed...

Dasel is a command-line tool and Go library for querying, modifying, and transforming data across multiple formats (JSON, YAML, TOML, XML, CSV, HCL,...

stdgpu is a C++17 library providing STL-like GPU data structures (atomic, bitset, deque, queue, vector, hash table, etc.) optimized for CUDA, OpenMP,...

PSL is a comprehensive standard library for PHP 8.4+ that provides type-safe APIs for async operations, collections, I/O, cryptography, and terminal...

bidict is a Python library providing bidirectional mapping (bimap) data structures, allowing efficient lookups in both directions. It serves...

Flatbush is a static spatial indexing library for 2D points and rectangles in JavaScript, implementing a packed Hilbert R-tree algorithm. It excels...

TheAlgorithms/Java is a large educational reference repository containing implementations of common algorithms and data structures in Java,...

A comprehensive study guide and knowledge repository for C/C++ technical job seekers and beginners, covering language fundamentals, data structures,...

JCTools provides specialized concurrent data structures for Java (SPSC/MPSC/SPMC/MPMC queues and variants) optimized for lock-free, wait-free, and...

TheAlgorithms/Rust is an educational collection of algorithm and data structure implementations written in Rust, designed to teach computer science...

A multi-language reference library implementing classical algorithms and data structures (segment trees, Fenwick trees, treaps, link-cut trees, etc.)...

A comprehensive C# class library providing reference implementations of 35+ classic data structures and 40+ algorithms, with 623+ passing unit tests...

An educational resource bundling JavaScript and TypeScript implementations of classic data structures (linked lists, trees, graphs, queues) and...