Codingbat-java

My Java solutions for CodingBat problems, organized by category.

CodingBat Java Solutions

This repository contains my step-by-step Java solutions for CodingBat problems.
All solutions are grouped by category (Warmup, String, Array, Logic, etc.) and organized in a clean folder structure.

The main goals of this repository:

• Improve Java fundamentals
• Practice problem-solving and algorithmic thinking
• Maintain clean, consistent, readable code
• Build a visible public portfolio

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📁 Project Structure

codingbat-java/ src/ warmup1/ warmup2/ string1/ string2/ array1/ array2/ logic1/ logic2/ ...

Each problem is a separate .java file, named using PascalCase:
Example: SleepIn.java, MissingChar.java, ArrayCount9.java

Each file contains:

• The method required by CodingBat
• A JavaDoc-style header with the exercise name
• Optional main() for manual testing

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🚀 How to Run

This repository contains plain Java classes.
To run a solution:

1. Open any file in src/...
2. Run the main() method in your IDE
   (GitHub.dev → No run support, but works locally or in Codespaces)

Java version recommended: 17 or 21

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📌 Progress Tracking

✔️ Completed

• Warmup-1
• Warmup-2
• String-1
• Array-1
• Logic-1

🔄 In progress

• String-2
  (last solved: xyzMiddle, next: getSandwich)

⏭️ Upcoming

• Array-2
• Logic-2
• Recursion problems

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🧠 Coding Style

• Clean and minimal
• No unnecessary variables
• Prefer early returns
• Use StringBuilder when needed
• Use loops or indexing depending on problem type
• Comment only when necessary

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🛠️ Future Improvements

Later I may add:

• JUnit tests for each solution
• Benchmarking for performance exercises
• Refactored or optimized versions
• A small web viewer for all solutions (optional)

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🤝 Contributing

This repo is mainly for personal learning,
but suggestions or improvements are always welcome.

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⭐ About CodingBat

CodingBat is a free site for practicing Java and Python through small, focused exercises.
https://codingbat.com/