GitHub topics: data-structure
arunvarmav/redis-3mm
🔍 Enhance Redis performance with 3mm, a lightweight memory manager designed to optimize memory usage and speed up data processing.
Size: 1.29 MB - Last synced at: about 5 hours ago - Pushed at: about 6 hours ago - Stars: 0 - Forks: 0
ryftchen/foo
bar
Language: C++ - Size: 4.13 MB - Last synced at: about 4 hours ago - Pushed at: about 16 hours ago - Stars: 4 - Forks: 0
EndlessCheng/codeforces-go
算法竞赛模板库 by 灵茶山艾府 💭💡🎈
Language: Go - Size: 128 MB - Last synced at: 1 day ago - Pushed at: 1 day ago - Stars: 7,851 - Forks: 769
hyoguoo/algorithm-problem-solving
Algorithm with Java
Language: Java - Size: 2.2 MB - Last synced at: 1 day ago - Pushed at: 1 day ago - Stars: 2 - Forks: 0
Albenee/idx-free
🚀 Automate UUID generation for deployment scripts, enhancing convenience and flexibility in batch setups without hardcoding values.
Language: Shell - Size: 1.3 MB - Last synced at: 2 days ago - Pushed at: 2 days ago - Stars: 0 - Forks: 0
DrClown55/cursor-dynamic-rules-system
🚀 Automate context-based rule selection in your projects with a dynamic system that enforces quality standards and ensures consistent communication.
Size: 1.36 MB - Last synced at: 2 days ago - Pushed at: 2 days ago - Stars: 0 - Forks: 0
p1884879/redis-tdl
🚀 Enhance your Redis experience with a lightweight task management tool designed for quick and efficient data organization.
Size: 1.29 MB - Last synced at: 2 days ago - Pushed at: 2 days ago - Stars: 0 - Forks: 0
Amey-Thakur/ANALYSIS-OF-ALGORITHM-AND-ANALYSIS-OF-ALGORITHM-LAB
CSC402: Analysis of Algorithms [AOA] & CSL401: Analysis of Algorithms Lab [AOA Lab] | SE Semester IV | Computer Engineering
Language: C - Size: 88.9 MB - Last synced at: 2 days ago - Pushed at: 2 days ago - Stars: 10 - Forks: 1
Amey-Thakur/DATA-STRUCTURES-AND-DATA-STRUCTURES-LAB
CSC305: Data Structures [DS] & CSL303: Data Structures Lab [DS Lab] | SE Semester III | Computer Engineering
Language: C - Size: 82.5 MB - Last synced at: 1 day ago - Pushed at: 2 days ago - Stars: 12 - Forks: 2
cpinitiative/usaco-guide
A free collection of curated, high-quality resources to take you from Bronze to Platinum and beyond.
Language: MDX - Size: 242 MB - Last synced at: 3 days ago - Pushed at: 3 days ago - Stars: 1,755 - Forks: 586
c-cube/ocaml-containers
A lightweight, modular standard library extension, string library, and interfaces to various libraries (unix, threads, etc.) BSD license.
Language: OCaml - Size: 21.7 MB - Last synced at: 1 day ago - Pushed at: 4 days ago - Stars: 514 - Forks: 90
rlatjwls7882/Cpp-Algorithms
대회 / 코딩테스트 알고리즘 정리
Size: 20.3 MB - Last synced at: 1 day ago - Pushed at: 4 days ago - Stars: 8 - Forks: 0
asaxaz1111/memcached-om4
🧊 Manage Memcached instances with ease using memcached-om4, simplifying cache handling and optimizing performance for your applications.
Size: 1.3 MB - Last synced at: 4 days ago - Pushed at: 4 days ago - Stars: 0 - Forks: 0
kiwi1547/hypersql-mzx
🚀 Simplify SQL database management with hypersql-mzx, a lightweight and efficient solution for seamless data handling and querying.
Size: 1.29 MB - Last synced at: 4 days ago - Pushed at: 4 days ago - Stars: 0 - Forks: 0
sabertazimi/OJs
:memo: Archive for OJ code
Language: TypeScript - Size: 15.1 MB - Last synced at: 2 days ago - Pushed at: 4 days ago - Stars: 2 - Forks: 1
owensgroup/RXMesh
GPU-accelerated triangle mesh processing
Language: Cuda - Size: 11.2 MB - Last synced at: 2 days ago - Pushed at: 5 days ago - Stars: 286 - Forks: 40
Raghav-939/redis-m1m
🗄️ Simplify Redis management with redis-m1m, a lightweight tool designed for efficient data handling and seamless performance.
Size: 1.3 MB - Last synced at: 5 days ago - Pushed at: 5 days ago - Stars: 0 - Forks: 0
Nandoxxt/kirmanjiku-6
🌐 Enhance your digital experience with kirmanjiku-6, a streamlined tool designed for efficient content management and collaboration.
Size: 1.29 MB - Last synced at: 6 days ago - Pushed at: 6 days ago - Stars: 0 - Forks: 0
ichiban/soa
Structure of Arrays for Go
Language: Go - Size: 32.2 KB - Last synced at: 5 days ago - Pushed at: 9 months ago - Stars: 10 - Forks: 0
Alisherka7/LeetCode
Leetcode problem solve
Language: Java - Size: 1.35 MB - Last synced at: 3 days ago - Pushed at: 7 days ago - Stars: 2 - Forks: 0
modestalate494/memcached-djf
🚀 Enhance application performance with memcached-djf, a lightweight, Django-friendly interface for efficient caching using Memcached.
Size: 1.3 MB - Last synced at: 7 days ago - Pushed at: 7 days ago - Stars: 0 - Forks: 0
Yvessupranational207/redis-kst
Size: 1.3 MB - Last synced at: 7 days ago - Pushed at: 7 days ago - Stars: 0 - Forks: 0
linzeyang/advent-of-code
Solutions for Advent of Code
Language: Python - Size: 919 KB - Last synced at: 4 days ago - Pushed at: 7 days ago - Stars: 0 - Forks: 0
lucsorel/datawalk
Fetch values from nested data structures
Language: Python - Size: 137 KB - Last synced at: 4 days ago - Pushed at: 8 days ago - Stars: 1 - Forks: 1
MuYunyun/blog
Life is a moment :notebook_with_decorative_cover:
Language: JavaScript - Size: 252 MB - Last synced at: 6 days ago - Pushed at: 8 days ago - Stars: 1,619 - Forks: 230
ssoelvsten/anatree
Anatree: A Fast Data Structure for Anagrams
Language: C++ - Size: 297 KB - Last synced at: 5 days ago - Pushed at: 9 days ago - Stars: 2 - Forks: 0
sekhyuni/computer-science
자료구조, 알고리즘, 네트워크, 운영체제 등 Software Engineer로서 갖추어야 할 기본적인 Computer Science 지식을 정리해둔 공간입니다.
Language: JavaScript - Size: 162 KB - Last synced at: 6 days ago - Pushed at: 9 days ago - Stars: 61 - Forks: 1
StarlangSoftware/DataStructure-CPP
Simple Data Structures Library
Language: C++ - Size: 205 KB - Last synced at: 8 days ago - Pushed at: 10 days ago - Stars: 2 - Forks: 1
shubhsingh1515/Leetcode-Solutions
Collection of my LeetCode solutions with a focus on problem-solving and efficient Java implementations.
Language: Java - Size: 271 KB - Last synced at: 9 days ago - Pushed at: 11 days ago - Stars: 0 - Forks: 0
yennanliu/CS_basics
My CS learning : algorithm, data structure, and system design | #SE
Language: Java - Size: 307 MB - Last synced at: 11 days ago - Pushed at: 11 days ago - Stars: 128 - Forks: 48
kohei-us/mdds
Actively maintained on https://gitlab.com/mdds/mdds instead. This one is just a mirror.
Language: C++ - Size: 6.74 MB - Last synced at: 10 days ago - Pushed at: 11 days ago - Stars: 8 - Forks: 0
kamyu104/LeetCode-Solutions
🏋️ Python / Modern C++ Solutions of All 3773 LeetCode Problems (Weekly Update)
Language: C++ - Size: 26 MB - Last synced at: 10 days ago - Pushed at: 11 days ago - Stars: 5,079 - Forks: 1,647
kei-g/cactus-stack.js
A library for cactus stack works on Node.js
Language: TypeScript - Size: 3.88 MB - Last synced at: 10 days ago - Pushed at: 11 days ago - Stars: 0 - Forks: 0
davecom/SwiftPriorityQueue
A Generic Priority Queue in Pure Swift
Language: Swift - Size: 120 KB - Last synced at: 9 days ago - Pushed at: almost 3 years ago - Stars: 374 - Forks: 41
SvenWoltmann/java-collections-guide
Java Queue, Deque, Stack and other collections - Ultimate Guide on HappyCoders.eu.
Language: Java - Size: 943 KB - Last synced at: 10 days ago - Pushed at: 12 days ago - Stars: 3 - Forks: 1
ahmdbnrsl/data-structure-algorithm
A collection of Data Structures and Algorithms (DSA) implementations written in Python, TypeScript, and Go. This repository includes common algorithms, problem-solving patterns, and reusable code examples to help with learning, interview preparation, and building efficient applications.
Language: Go - Size: 5.03 MB - Last synced at: 10 days ago - Pushed at: 12 days ago - Stars: 1 - Forks: 0
astrainfinita/Algorithm
Verified efficient algorithms in Lean4.
Language: Lean - Size: 368 KB - Last synced at: 12 days ago - Pushed at: 12 days ago - Stars: 32 - Forks: 0
Deepali-Srivastava/data-structures-and-algorithms-in-csharp
Data Structures and Algorithms ( DSA ) in C#
Language: C# - Size: 103 KB - Last synced at: 13 days ago - Pushed at: 14 days ago - Stars: 29 - Forks: 23
Deepali-Srivastava/advanced-data-structures-and-algorithms-in-c-sharp
Advanced Data Structures and Algorithms in C# ( DSA )
Language: C# - Size: 66.4 KB - Last synced at: 13 days ago - Pushed at: 14 days ago - Stars: 13 - Forks: 8
suresh-srivastava/data-structures-and-algorithms-in-csharp
Data Structures and Algorithms ( DSA ) In C# / C Sharp
Language: C# - Size: 109 KB - Last synced at: 13 days ago - Pushed at: 14 days ago - Stars: 10 - Forks: 4
lnishan/awesome-competitive-programming
:gem: A curated list of awesome Competitive Programming, Algorithm and Data Structure resources
Size: 6.75 MB - Last synced at: 13 days ago - Pushed at: about 1 year ago - Stars: 13,616 - Forks: 2,612
msboffl/ds-algo
Data Structures and Algorithms
Language: TypeScript - Size: 119 KB - Last synced at: 14 days ago - Pushed at: 18 days ago - Stars: 1 - Forks: 0
dronnix/bwarr
Black-White Array: fast, ordered data structure based on arrays with O(log N) memory allocations
Language: Go - Size: 101 KB - Last synced at: 16 days ago - Pushed at: 20 days ago - Stars: 1 - Forks: 0
data-to-insight/ssd-data-model
Standard Safeguarding Dataset (SSD)
Language: TSQL - Size: 127 MB - Last synced at: 18 days ago - Pushed at: 19 days ago - Stars: 2 - Forks: 0
karunesh-avisoft/Python
My personal Python learning playground — notes, experiments, and practice code.
Language: Python - Size: 2.08 MB - Last synced at: 4 days ago - Pushed at: 8 days ago - Stars: 0 - Forks: 0
bokshi-gh/bloom-filter
Python implementation of Bloom Filter
Language: Python - Size: 21.5 KB - Last synced at: 20 days ago - Pushed at: 23 days ago - Stars: 0 - Forks: 0
networktomp-dev/libpvars
A versatile C library of extended variables.
Language: C - Size: 78.1 KB - Last synced at: 20 days ago - Pushed at: 23 days ago - Stars: 0 - Forks: 0
ascendho/Data-Structures
📓《数据结构》(双色版)——严蔚敏&李冬梅 - 教材源码、习题全解、实验项目、勘误表、配套课件等资源,且配有官方头歌实训平台,以及高质量的第三方网课资源✨
Language: C++ - Size: 113 MB - Last synced at: 23 days ago - Pushed at: 25 days ago - Stars: 57 - Forks: 3
khianvictorycalderon/DSA-Plotting
Data structure final lessons
Language: Python - Size: 1000 Bytes - Last synced at: 24 days ago - Pushed at: 26 days ago - Stars: 0 - Forks: 0
AntoineGagne/erl-a-tree
A NIF for the https://crates.io/crates/a-tree crate
Language: Erlang - Size: 30.3 KB - Last synced at: 24 days ago - Pushed at: 26 days ago - Stars: 0 - Forks: 0
abdelhalimyasser/Data-Structures
Data Strucures
Language: Java - Size: 449 KB - Last synced at: 25 days ago - Pushed at: 28 days ago - Stars: 1 - Forks: 0
dask-contrib/dask-awkward
Native Dask collection for awkward arrays, and the library to use it.
Language: Python - Size: 1.58 MB - Last synced at: 5 days ago - Pushed at: 8 days ago - Stars: 67 - Forks: 21
fete2306/LowCostHash
理论尚可,无实际价值的灵感实践。对于一个键x,所消耗节点数为log_4 x,消耗空间为5log_4 x。支持自动升级节点,支持不同类型的键值对,可自动处理不同类型键的哈希冲突
Language: C++ - Size: 44.9 KB - Last synced at: 26 days ago - Pushed at: 29 days ago - Stars: 0 - Forks: 0
singularitti/GershgorinDiscs.jl
Implementing the Gershgorin circle theorem
Language: Julia - Size: 434 KB - Last synced at: 24 days ago - Pushed at: 29 days ago - Stars: 2 - Forks: 0
kpol/trie
Trie (a.k.a. prefix tree) C# implementation. Has constant-time string prefix lookup.
Language: C# - Size: 1.43 MB - Last synced at: 2 days ago - Pushed at: 5 months ago - Stars: 113 - Forks: 22
SidharthMudgil/competitive-programming
interview preparation and guide for DSA
Language: C++ - Size: 484 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 9 - Forks: 11
syubogdanov/onotation
Because O(n²) should be a choice, not a surprise! Data structures for Python, sped up with C.
Language: Python - Size: 28.3 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 0 - Forks: 0
moorara/algo
Algorithms and data structures for Go applications
Language: Go - Size: 1.68 MB - Last synced at: 1 day ago - Pushed at: 4 days ago - Stars: 11 - Forks: 4
h2oai/datatable
A Python package for manipulating 2-dimensional tabular data structures
Language: C++ - Size: 14.7 MB - Last synced at: 18 days ago - Pushed at: 9 months ago - Stars: 1,881 - Forks: 166
marianobarrios/linked-blocking-multi-queue
A concurrent collection that extends the existing Java concurrent collection library, offering an optionally-bounded blocking "multi-queue" based on linked nodes.
Language: Java - Size: 758 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 47 - Forks: 14
mourner/tinyqueue
The smallest and simplest priority queue in JavaScript.
Language: JavaScript - Size: 50.8 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 459 - Forks: 45
ivanovitchm/datastructure
Repository for DCA0209, an undergraduate course about Data Structure and Algorithms
Language: Jupyter Notebook - Size: 178 MB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 40 - Forks: 15
bokshi-gh/hash-map
Language: C - Size: 8.79 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 0 - Forks: 0
bokshi-gh/dynamic-array
Language: C - Size: 4.88 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 0 - Forks: 0
tchap/go-patricia
A generic patricia trie (also called radix tree) implemented in Go (Golang)
Language: Go - Size: 68.4 KB - Last synced at: 4 days ago - Pushed at: 6 months ago - Stars: 289 - Forks: 60
bokshi-gh/pair
Language: C - Size: 18.6 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 0 - Forks: 0
waaraawa/ByteGrid
Visualize binary data and C struct memory layouts as interactive SVG diagrams in Obsidian
Language: TypeScript - Size: 191 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 0 - Forks: 0
sile/scalable_cuckoo_filter
A variant of Cuckoo Filter whose size automatically scales as necessary
Language: Rust - Size: 110 KB - Last synced at: about 1 month ago - Pushed at: about 1 month ago - Stars: 25 - Forks: 11
loophp/phptree
An implementation of tree data structure
Language: PHP - Size: 393 KB - Last synced at: 5 days ago - Pushed at: 9 days ago - Stars: 98 - Forks: 5
keon/algorithms
Minimal examples of data structures and algorithms in Python
Language: Python - Size: 1.3 MB - Last synced at: about 1 month ago - Pushed at: about 2 months ago - Stars: 24,824 - Forks: 4,700
studiowebux/noditor-graph
A modular graph data processing toolkit with chainable pipelines, reusable processors, and utilities for filtering, transforming, and applying custom formulas to nodes and edges, built with graphology.
Language: TypeScript - Size: 20.5 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 0 - Forks: 0
orium/rpds
Rust persistent data structures
Language: Rust - Size: 727 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 1,612 - Forks: 64
lucas-bardeli/estrutura-de-dados
🎲 Estudos sobre Estrutura de Dados em JavaScript com Node.js.
Language: JavaScript - Size: 53.7 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 0 - Forks: 0
kngsoomin/database-with-c
This project implements a custom database management system using a doubly linked list structure. It features SQL-like query parsing, supports basic database operations, and employs efficient index management.
Language: C - Size: 7.18 MB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 0 - Forks: 0
moonbit-community/intmap
Simple Intmap Implementation in MoonBit
Language: MoonBit - Size: 70.3 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 1 - Forks: 0
apachecn/apachecn-algo-zh
ApacheCN 数据结构与算法译文集
Language: JavaScript - Size: 1.09 MB - Last synced at: about 2 months ago - Pushed at: over 1 year ago - Stars: 11,129 - Forks: 2,195
LiangliangNan/Easy3D
A lightweight, easy-to-use, and efficient library for processing and rendering 3D data (C++ & Python)
Language: C++ - Size: 261 MB - Last synced at: about 2 months ago - Pushed at: 7 months ago - Stars: 1,582 - Forks: 271
rani-sikdar/Python-Data-Structures
A repository for sharing Python implementations of common data structures and algorithms, including arrays, linked lists, stacks, queues, trees, graphs, and sorting/searching techniques. Perfect for learning, revisiting fundamentals, and collaborating on computer science concepts. Contributions welcome! 🚀
Language: Jupyter Notebook - Size: 589 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 1 - Forks: 0
cypherpunk-symposium/master-algorithms-py 📦
👾 my detailed walk-through for mastering classical algorithm and data structure (and the book i published with hanbit a decade ago)
Language: Python - Size: 16.6 MB - Last synced at: 4 days ago - Pushed at: about 1 year ago - Stars: 33 - Forks: 7
parvej236/data_structure_course_academic
Here I have provided my level 2 term 1 Data Structure Course's code in c++
Language: C++ - Size: 90.8 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 0 - Forks: 0
cybersecurity-dev/data-structures-in-fsharp
Data Structures in F#
Size: 7.81 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 1 - Forks: 0
lonely-wolf-howl/coding-test
Language: Python - Size: 101 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 0 - Forks: 0
krahets/hello-algo
《Hello 算法》:动画图解、一键运行的数据结构与算法教程。支持 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 代码。简体版和繁体版同步更新,English version in translation
Language: Java - Size: 354 MB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 118,131 - Forks: 14,506
xy-241/CS-Notes
My Second Brain for Computer Science related stuff. Zero bullshit, short and sweet.
Language: TypeScript - Size: 407 MB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 76 - Forks: 6
davecom/SwiftGraph
A Graph Data Structure in Pure Swift
Language: Swift - Size: 1.84 MB - Last synced at: about 1 month ago - Pushed at: about 2 months ago - Stars: 788 - Forks: 82
itcharge/AlgoNote
⛽️「算法通关手册」:从零开始的「算法与数据结构」学习教程,200 道「算法面试热门题目」,1000+ 道「LeetCode 题目解析」,持续更新中!
Language: Python - Size: 8.69 MB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 7,357 - Forks: 1,275
Minhir/multikeys
Multikeys data structures
Language: TypeScript - Size: 673 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 6 - Forks: 1
filips123/WebAppManifestRS
Rust data structure and utilities for (de)serialization and storage of Web Application Manifests
Language: Rust - Size: 132 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 2 - Forks: 1
yamafaktory/hypergraph
Hypergraph is data structure library to create a directed hypergraph in which a hyperedge can join any number of vertices.
Language: Rust - Size: 336 KB - Last synced at: about 2 months ago - Pushed at: 8 months ago - Stars: 316 - Forks: 14
JistScript/Base
This repository contains script implemented in TypeScript for a simple data type language.
Language: TypeScript - Size: 56.6 KB - Last synced at: about 2 months ago - Pushed at: about 2 months ago - Stars: 3 - Forks: 0
ReversingID/Programming-Reference
Open repository of programming topic for reverse engineering purpose.
Language: C++ - Size: 1.52 MB - Last synced at: about 2 months ago - Pushed at: almost 5 years ago - Stars: 29 - Forks: 8
Deepali-Srivastava/data-structures-and-algorithms-in-java
Data Structures and Algorithms (DSA) in Java
Language: Java - Size: 108 KB - Last synced at: 2 months ago - Pushed at: 2 months ago - Stars: 67 - Forks: 38
Deepali-Srivastava/data-structures-and-algorithms-in-c
Data Structures and Algorithms ( DSA ) in C
Language: C - Size: 135 KB - Last synced at: 2 months ago - Pushed at: 2 months ago - Stars: 75 - Forks: 26
Deepali-Srivastava/data-structures-and-algorithms-in-python
Data Structures and Algorithms (DSA) in Python
Language: Python - Size: 78.1 KB - Last synced at: 2 months ago - Pushed at: 2 months ago - Stars: 32 - Forks: 19
jsdom/js-symbol-tree
Turn any collection of objects into its own efficient tree or linked list using Symbol
Language: JavaScript - Size: 85 KB - Last synced at: 7 days ago - Pushed at: over 5 years ago - Stars: 112 - Forks: 23
molostovvs/leetcode
Language: C# - Size: 587 KB - Last synced at: 2 months ago - Pushed at: 2 months ago - Stars: 0 - Forks: 0
krejciad/kramdb
Simple in-RAM database system
Language: C++ - Size: 38.1 KB - Last synced at: 2 months ago - Pushed at: 2 months ago - Stars: 1 - Forks: 0
sachin2smart/DataStructure
DSA + Problem Solving
Language: Java - Size: 68.6 MB - Last synced at: 2 months ago - Pushed at: 2 months ago - Stars: 1 - Forks: 0
bqi343/cp-notebook
General Resources for Competitive Programming
Language: C++ - Size: 21.5 MB - Last synced at: 2 months ago - Pushed at: 10 months ago - Stars: 2,687 - Forks: 431
kowainik/slist
♾️ Sized list
Language: Haskell - Size: 79.1 KB - Last synced at: 2 months ago - Pushed at: over 1 year ago - Stars: 47 - Forks: 6