https://github.com/andrei-punko/java-interview-coding

Java coding interview tasks solutions
https://github.com/andrei-punko/java-interview-coding

coding-examples coding-interviews coding-practice interview-preparation interview-tasks java-coding java-coding-guide java-coding-problems java-interview java-leetcode leetcode-java leetcode-java-practice leetcode-java-solutions leetcode-solutions leetcode-solutions-java

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Java coding interview tasks solutions

• Host: GitHub
• URL: https://github.com/andrei-punko/java-interview-coding
• Owner: andrei-punko
• License: mit
• Created: 2021-02-25T10:25:02.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2026-04-07T19:37:47.000Z (16 days ago)
• Last Synced: 2026-04-07T21:26:26.739Z (15 days ago)
• Topics: coding-examples, coding-interviews, coding-practice, interview-preparation, interview-tasks, java-coding, java-coding-guide, java-coding-problems, java-interview, java-leetcode, leetcode-java, leetcode-java-practice, leetcode-java-solutions, leetcode-solutions, leetcode-solutions-java
• Language: Java
• Homepage: https://www.youtube.com/@andd3dfx
• Size: 4.95 MB
• Stars: 68
• Watchers: 5
• Forks: 19
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Java coding interview tasks solutions

[![Java CI with Gradle](https://github.com/andrei-punko/java-interview-coding/actions/workflows/gradle.yml/badge.svg)](https://github.com/andrei-punko/java-interview-coding/actions/workflows/gradle.yml)

[![Coverage](.github/badges/jacoco.svg)](https://github.com/andrei-punko/java-interview-coding/actions/workflows/gradle.yml)

[![License: MIT](https://img.shields.io/badge/License-MIT-blue.svg)](LICENSE)

## Prerequisites

- JDK 21

- Gradle (embedded in the project)

## How to build project

```shell

./gradlew clean build

```

## List of packages

- [annotation](src/main/java/by/andd3dfx/annotation)

- [cache](src/main/java/by/andd3dfx/cache)

- [collections](src/main/java/by/andd3dfx/collections)

- [common](src/main/java/by/andd3dfx/common) (some uncategorized stuff)

- [core](src/main/java/by/andd3dfx/core)

- [dynamic](src/main/java/by/andd3dfx/dynamic)

- [iterators](src/main/java/by/andd3dfx/iterators)

- [jvm](src/main/java/by/andd3dfx/jvm)

- [multithreading](src/main/java/by/andd3dfx/multithreading)

- [numeric](src/main/java/by/andd3dfx/numeric)

- [parser](src/main/java/by/andd3dfx/parser)

- [proxy](src/main/java/by/andd3dfx/proxy)

- [recursion](src/main/java/by/andd3dfx/recursion)

- [refactoring](src/main/java/by/andd3dfx/refactoring)

- [search](src/main/java/by/andd3dfx/search)

- [serialization](src/main/java/by/andd3dfx/serialization)

- [sorting](src/main/java/by/andd3dfx/sorting)

- [stream](src/main/java/by/andd3dfx/stream)

- [string](src/main/java/by/andd3dfx/string)

- [tree](src/main/java/by/andd3dfx/tree)

Sure, we have [tests](src/test/java/by/andd3dfx); they contain some code which describes implementation in a natural

way.

## SQL-related stuff

[SQL folder](sql/README.md) contains tasks which require writing SQL queries to solve them.

Check appropriate [video](https://youtu.be/GjDF_LdwYHU) on YouTube

## Coding interview materials

The [interview-materials](interview-materials) folder contains some

notes about interview preparation and useful links.

We can perceive materials in this folder as project backlog or "box with other stuff"

## Appendix. Verbal interview materials

Check [java-interview-faq-n-answers repo](https://github.com/andrei-punko/java-interview-faq-n-answers) to get materials for preparation to Java

verbal interview