# RodneyShag/HackerRank_solutions

317 efficient solutions to HackerRank problems

Repository: https://github.com/RodneyShag/HackerRank_solutions
Canonical: https://ross.abutalabs.com/products/hackerrank_solutions
Language: Java
License: MIT
License Family: permissive
Topics: hackerrank, java, solutions, problems
Last push: 2024-06-18T19:58:56+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": 3497, "days_push": 806, "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 2752, forks 1418 (observed 2026-08-28T04:07:18.078872+00:00)

## What it is
A curated collection of 317 efficient Java and MySQL solutions to HackerRank coding challenges, organized by track (Algorithms, Data Structures, SQL, Cracking the Coding Interview, etc.). It serves as a study reference for interview preparation and competitive programming practice.

## Use cases
- prepare for coding interviews with worked solutions
- study efficient Java solutions to algorithm problems
- practice data structures and algorithms questions
- learn SQL through solved HackerRank challenges
- compare my HackerRank solution against an efficient reference
- work through Cracking the Coding Interview problems

## When to choose
- you are preparing for technical interviews using HackerRank
- you want reference implementations of classic algorithm and data structure problems in Java
- you need worked examples for statistics, SQL, or implementation challenges

## When to avoid
- you need a runnable library or tool rather than example code
- you work in a language other than Java or MySQL
- you want interactive tutorials or explanations rather than solution code

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: developer-tools
- domain: education, tutorials
- platform: jvm
- tags: hackerrank, coding-interview, java, sql, data-structures, algorithms, solutions, interview-prep

## Member repositories
- RodneyShag/HackerRank_solutions (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:18.078872+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 2026-08-30T08:18:54.424258+00:00, confidence not recorded.
  - readme: https://github.com/RodneyShag/HackerRank_solutions (fetched 2026-08-28T04:07:18.078872+00:00, sha 9d04be003727)
- Data as of 2026-08-30T08:39:29.467469+00:00.