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HackerRank

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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.

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RodneyShag / HackerRank_solutions

Star 2.8k

317 efficient solutions to HackerRank problems

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  • Updated Jun 18, 2024
  • Java

neerazz / FAANG

Star 1.9k

Competitive programming questions.

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  • Updated Jul 27, 2026
  • Java

manishbisht / Competitive-Programming

Star 1.8k

📌 📚 Solution of competitive programming problems, code templates, Data Structures and Algorithms, hackathons, interviews and much more.

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  • Updated Aug 29, 2023
  • C++

RyanFehr / HackerRank

Star 1.3k

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

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  • 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

marinskiy / HackerrankPractice

Star 1.1k

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

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

xeoneux / 30-Days-of-Code

Star 1.1k

👨‍💻 30 Days of Code by HackerRank Solutions in C, C++, C#, F#, Go, Java, JavaScript, Python, Ruby, Swift & TypeScript. PRs Welcome! 😄

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

warycat / rustgym

Sponsor
Star 938

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

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  • Updated Dec 31, 2024
  • Rust

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

Sponsor
Star 839

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 819

The solutions of all SQL hackerrank challenges using MySQL environment

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  • Updated Apr 30, 2024
  • SQL

vinta / fuck-coding-interviews

Star 747

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

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  • Updated Mar 30, 2023
  • Python

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

Star 738

Ruby implementation of Algorithms,Data-structures and programming challenges

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  • Updated Dec 4, 2024
  • Ruby

karansaxena / STL_Cheat_Sheets

Star 592

C++ STL Cheat Sheets.

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  • Updated Oct 1, 2020

abeaumont / competitive-programming

Star 584

Solutions to problems from various online judges / contest sites.

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  • Updated May 7, 2025
  • C++

sastava007 / Tech-Interview-Preparation

Star 564

A one stop solution to ace your next coding interview 👨‍💻

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  • Updated Dec 22, 2023
  • C++

sapanz / Hackerrank-Problem-Solving-Python-Solutions

Star 490

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 470

Solutions of challenges of Hackerrank Python domain

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  • Updated Apr 28, 2025
  • Python

srgnk / HackerRank

Star 462

Solutions to HackerRank problems

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  • Updated Oct 25, 2021
  • Python

kilian-hu / hackerrank-solutions

Star 426

A collection of solutions to competitive programming exercises on HackerRank.

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  • Updated Jul 20, 2024
  • Python

mdh266 / SQL-Practice

Star 384

Solutions to Problems For SQL on Leetcode, Hackerrank & DataLemur

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  • Updated Aug 3, 2024

Created by Vivek Ravisankar, Hari Karunanidhi

Released July 2009

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

Related topics

codechef competitive-programming
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