# igorwojda/kotlin-coding-challenges

🧩 Kotlin coding puzzle and solutions

Repository: https://github.com/igorwojda/kotlin-coding-challenges
Canonical: https://ross.abutalabs.com/products/kotlin-coding-challenges
Language: Kotlin
License: MIT
License Family: permissive
Topics: kotlin, coding-challenge, coding-interviews, programming-exercises, challenges-solved, challenges
Last push: 2026-08-25T18:00:24+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 2835, "days_push": 8, "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 1055, forks 270 (observed 2026-08-28T04:03:24.152328+00:00)

## What it is
A collection of Kotlin coding puzzles with hints, JUnit tests, and solutions, organized by difficulty and problem type. It is designed to help developers practice problem-solving and prepare for whiteboard coding interviews.

## Use cases
- practice kotlin coding exercises
- prepare for coding interviews
- learn algorithms and data structures with kotlin
- solve programming puzzles with test-driven feedback
- improve problem-solving skills before a job interview
- find kotlin challenges by difficulty level

## When to choose
- you are learning Kotlin and want hands-on exercises with tests
- you are preparing for whiteboard or technical coding interviews
- you want curated challenges with reference solutions and Big O comparisons

## When to avoid
- you need a production library or framework to include in a project
- you are looking for challenges in a language other than Kotlin
- you want an interactive online judge platform rather than a repository

## Facets
- artifact type: learning-resource
- maturity: active
- function: testing, developer-tools
- domain: education, programming-languages, tutorials
- platform: jvm
- tags: kotlin, coding-challenges, interview-preparation, problem-solving, exercises, junit, algorithms

## Member repositories
- igorwojda/kotlin-coding-challenges (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:24.152328+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 2026-08-30T06:58:38.519515+00:00, confidence not recorded.
  - readme: https://github.com/igorwojda/kotlin-coding-challenges (fetched 2026-08-28T04:03:24.152328+00:00, sha 9d8afad4d864)
- Data as of 2026-08-30T08:39:29.467469+00:00.