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HackerRank

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hackerrank logo

HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses, where developers compete by trying to program according to provided specifications. HackerRank’s programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, JavaScript) and span multiple computer science domains. When a programmer submits a solution to a programming challenge, their submission is scored on the accuracy of their output. Programmers are then ranked globally on the HackerRank leaderboard and earn badges based on their accomplishments to drive competition among users.

Here are 4,111 public repositories matching this topic...

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All 4,111 Python 1,056 Java 739 C++ 688 JavaScript 434 C 116 C# 111 Jupyter Notebook 91 Go 85 Swift 45 Kotlin 43
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RodneyShag / HackerRank_solutions

Star 2.8k

317 efficient solutions to HackerRank problems

java solutions hackerrank problems
  • Updated Jun 18, 2024
  • Java

neerazz / FAANG

Star 1.9k

Competitive programming questions.

apple facebook algorithm algorithms leetcode amazon competitive-programming hackerrank data-structures netflix interview-practice leetcode-solutions coding-interviews interview-preparation system-design algorithms-and-data-structures faang job-preparation maang
  • Updated Jul 27, 2026
  • Java

manishbisht / Competitive-Programming

Star 1.8k

πŸ“Œ πŸ“š Solution of competitive programming problems, code templates, Data Structures and Algorithms, hackathons, interviews and much more.

javascript python google facebook algorithm algorithms datastructures leetcode cpp hackathon interview codechef competitive-programming hackerrank hackathons codeforces awesome-list javascipt hackercup googlecodejam
  • Updated Aug 29, 2023
  • C++

RyanFehr / HackerRank

Star 1.3k

HackerRank solutions in Java/JS/Python/C++/C#

javascript python java csharp algorithms cpp hackerrank data-structures java8
  • Updated Feb 22, 2024
  • Java

alexattia / Data-Science-Projects

Star 1.2k

DataScience projects for learning : Kaggle challenges, Object Recognition, Parsing, etc.

python challenge machine-learning hackerrank kaggle
  • Updated Jan 13, 2023
  • Jupyter Notebook

xeoneux / 30-Days-of-Code

Star 1.1k

πŸ‘¨β€πŸ’» 30 Days of Code by HackerRank Solutions in C, C++, C#, F#, Go, Java, JavaScript, Python, Ruby, Swift & TypeScript. PRs Welcome! πŸ˜„

javascript ruby kotlin python c java go swift typescript csharp cplusplus fsharp solutions code hackerrank of days 30
  • Updated Aug 3, 2023
  • Java

marinskiy / HackerrankPractice

Star 1.1k

170+ solutions to Hackerrank.com practice problems using Python 3, Π‘++ and Oracle SQL

hackerrank hackerrank-python hackerrank-solutions hackerrank-sql
  • Updated Dec 24, 2023
  • Python

warycat / rustgym

Sponsor
Star 934

Leetcode Solutions in Rust, Advent of Code Solutions in Rust and more

rust algorithm tutorial advent-of-code leetcode graph solutions macros interview trie hackerrank interview-practice leetcode-solutions interview-questions hackerrank-solutions interview-preparation leetcode-rust
  • Updated Dec 31, 2024
  • Rust

rampatra / Algorithms-and-Data-Structures-in-Java

Sponsor
Star 838

Algorithms and Data Structures in Java

java algorithm algorithms datastructures leetcode blockchain cracking-the-coding-interview interview hackerrank data-structures geeksforgeeks java-8 interview-practice interview-preparation coding-interview algorithms-and-data-structures blockchain-demo cracking-the-technical-interview cracking-code-interview blockchain-java
  • Updated Oct 8, 2025
  • Java

Thomas-George-T / HackerRank-SQL-Challenges-Solutions

Star 818

The solutions of all SQL hackerrank challenges using MySQL environment

mysql challenge sql solutions tutorials hackerrank problem-solving hackerrank-solutions hackerrank-challenges hackerrank-sql hackerrank-sql-solutions mysql-environment sql-challenges select-challenges
  • Updated Apr 30, 2024
  • SQL

vinta / fuck-coding-interviews

Star 746

How on earth can I ever think of a solution like that in an interview?!

python algorithms leetcode interview hackerrank data-structures coding-interviews interview-preparation
  • Updated Mar 30, 2023
  • Python

kumar91gopi / Algorithms-and-Data-Structures-in-Ruby

Star 736

Ruby implementation of Algorithms,Data-structures and programming challenges

algorithm stack leetcode quicksort hackerrank bubble-sort insertion-sort leetcode-solutions binary-search codility merge-sort pythagorean-triples kadanes-algorithm array-rotation knuth-shuffling-algorithm dutch-nationalflag-problem strivers-sde-sheet blind75 grind75
  • Updated Dec 4, 2024
  • Ruby

karansaxena / STL_Cheat_Sheets

Star 595

C++ STL Cheat Sheets.

c cheat-sheets lists c-plus-plus leetcode cpp stl interview codechef topcoder hackerrank coding cheatsheet codeforces interview-practice hackerearth interview-preparation interviewbit
  • Updated Oct 1, 2020

abeaumont / competitive-programming

Star 583

Solutions to problems from various online judges / contest sites.

advent-of-code solutions codechef uva competitive-programming hackerrank codejam codeforces online-judges hackerearth uva-solutions atcoder kattis hackerrank-solutions codeforces-solutions codechef-solutions acepta-el-reto hackerearth-solutions kattis-solutions atcoder-solutions
  • Updated May 7, 2025
  • C++
Tech-Interview-Preparation

sastava007 / Tech-Interview-Preparation

Star 564

A one stop solution to ace your next coding interview πŸ‘¨β€πŸ’»

leetcode competitive-programming hackerrank geeksforgeeks interview-questions technical-coding-interview beginner-friendly coding-interviews hacktoberfest competitive-programming-contests technical-interviews technical-interview-questions coding-blocks coding-blocks-practice-questions hacktoberfest2020 faang
  • Updated Dec 22, 2023
  • C++

sapanz / Hackerrank-Problem-Solving-Python-Solutions

Star 491

Hackerrank Problem solving solutions in Python

python python-3-6 python3 hackerrank problem-solving python2 hacktoberfest hackerrank-python hackerrank-datastructures-array hackerrank-solutions hackerrank-algorithms-solutions hackerrank-challenges hackerrank-problem-solutions hackerrank-problem-solving hacktoberfest2020
  • Updated Aug 6, 2024
  • Python

arsho / Hackerrank_Python_Domain_Solutions

Star 469

Solutions of challenges of Hackerrank Python domain

python hackerrank hackerrank-python hackerrank-solutions
  • Updated Apr 28, 2025
  • Python

srgnk / HackerRank

Star 462

Solutions to HackerRank problems

shell solutions hackerrank hackerrank-python hackerrank-solutions hackerrank-algorithms-solutions hackerrank-python-solutions hackerrank-challenges
  • Updated Oct 25, 2021
  • Python

kilian-hu / hackerrank-solutions

Star 424

A collection of solutions to competitive programming exercises on HackerRank.

competitive-programming hackerrank hackerrank-solutions hackerrank-certificates hackerrank-certification
  • Updated Jul 20, 2024
  • Python

mdh266 / SQL-Practice

Star 398

Solutions to Problems For SQL on Leetcode, Hackerrank & DataLemur

sql leetcode hackerrank sql-query leetcode-solutions leetcode-questions hackerrank-solutions sqlzoo leetcode-practice sqlzoo-solutions hackerrank-sql sql-practice datalemur datalemur-solutions
  • Updated Aug 3, 2024

Created by Vivek Ravisankar, Hari Karunanidhi

Released July 2009

Followers
144 followers
Organization
interviewstreet
Website
github.com/topics/hackerrank
Wikipedia
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