# RyanFehr/HackerRank

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

Repository: https://github.com/RyanFehr/HackerRank
Canonical: https://ross.abutalabs.com/products/hackerrank
Language: Java
License: MIT
License Family: permissive
Topics: hackerrank, java, java8, algorithms, data-structures, cpp, python, csharp, javascript
Last push: 2024-02-22T11:50:08+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3644, "days_push": 923, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1340, forks 684 (observed 2026-08-28T04:04:25.977534+00:00)

## What it is
A curated collection of solutions to 153+ HackerRank problems written in Java, JavaScript, Python, C++, and C#. Solutions are organized by HackerRank domain (algorithms, data structures, mathematics, Java) with time and space complexity notes.

## Use cases
- prepare for coding interviews with worked algorithm solutions
- find reference implementations of classic data structure problems
- compare solutions to the same problem across multiple languages
- study dynamic programming and graph theory problem patterns
- learn Java-specific HackerRank track exercises

## When to choose
- you are practicing HackerRank problems and want to check or study reference solutions
- you want multi-language examples of common interview algorithms
- you need a structured walkthrough of HackerRank's algorithm and data structure tracks

## When to avoid
- you need a runnable algorithm library for production code
- you want an interactive judge or automated testing platform
- you need solutions for platforms other than HackerRank

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: developer-tools
- domain: education, programming-languages, tutorials
- platform: cross-platform
- tags: hackerrank, coding-interview-prep, solutions, java, python, cpp, javascript, csharp, data-structures, competitive-programming, algorithms

## Member repositories
- RyanFehr/HackerRank (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:25.977534+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:43:47.476886+00:00, confidence not recorded.
  - readme: https://github.com/RyanFehr/HackerRank (fetched 2026-08-28T04:04:25.977534+00:00, sha 934db55c25b8)
- Data as of 2026-08-30T08:39:29.467469+00:00.