Java-Problem-Solving-For-Test-Automation-Engineers-Part-I

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Java-Problem-Solving-For-Test-Automation-Engineers-Part-I

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# ☕ Java Problem Solving for Test Automation Engineers | 55+ Java Coding Interview Programs | Core Java for SDET & QA Automation

![Java](https://img.shields.io/badge/Java-Core-red?style=for-the-badge&logo=openjdk)
![Problem Solving](https://img.shields.io/badge/Problem-Solving-blue?style=for-the-badge)
![Automation Testing](https://img.shields.io/badge/Test-Automation-success?style=for-the-badge)
![SDET](https://img.shields.io/badge/SDET-Interview_Preparation-orange?style=for-the-badge)
![QA](https://img.shields.io/badge/QA-Engineering-green?style=for-the-badge)
![Data Structures](https://img.shields.io/badge/Core-Java-important?style=for-the-badge)
![GitHub](https://img.shields.io/badge/Portfolio-Project-blueviolet?style=for-the-badge)

</p>

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# 📌 Project Overview

Strong Java programming skills are the foundation of every successful **QA Automation Engineer** and **SDET**.

Before building Selenium, Playwright, Appium, REST Assured, or TestNG automation frameworks, engineers must master problem-solving using Core Java.

This repository contains **55+ carefully selected Java programming problems** frequently asked during interviews for:

- QA Automation Engineer
- SDET
- Software Development Engineer in Test
- Automation Test Engineer
- Java Developer
- Software Engineer

Each Java program is implemented with clean, easy-to-understand code to strengthen logical thinking and coding fundamentals required for enterprise automation frameworks.

> **GitHub Repository**

🔗 **https://github.com/ArpitChoubey/Java-Problem-Solving-For-Test-Automation-Engineers-Part-I**

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# 🏷️ Repository Tags

`JAVA`

`CORE JAVA`

`PROBLEM SOLVING`

`CODING INTERVIEW`

`SDET`

`QA AUTOMATION`

`SELENIUM`

`PLAYWRIGHT`

`APPIUM`

`TESTNG`

`PROGRAMMING`

`INTERVIEW PREPARATION`

`AUTOMATION ENGINEER`

---

# 🎯 Repository Objective

Automation Engineers write code every day.

This repository focuses on strengthening programming skills required to:

- Build scalable automation frameworks

- Solve coding interview questions

- Improve logical thinking

- Master Java fundamentals

- Write clean and reusable automation code

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# 📚 Topics Covered

## 🔤 String Programming

- Reverse String

- Palindrome String

- Anagram String

- Duplicate Characters

- Character Frequency

- Count Words

- Remove Whitespaces

- Remove Special Characters

- String Length

- Position of Word

- Reverse Words

- Vowel Identification

---

## 🔢 Number Programming

- Armstrong Number

- Prime Number

- Fibonacci Series

- Factorial

- Leap Year

- Even & Odd

- Positive / Negative Number

- Reverse Number

- Sum of Digits

- Sum of Natural Numbers

- Quotient & Remainder

- Random Numbers

---

## 📊 Array Programming

- Missing Number

- Duplicate Elements

- Array Equality

- Sorting Arrays

- Reverse Array

- Maximum Element

- Minimum Element

- Sum of Elements

- Largest Three Numbers

- Even & Odd Numbers

- Linear Search

---

## 🔁 Recursion

- Recursive Factorial

- Recursive Problem Solving

---

## 🔠 Character Operations

- ASCII Values

- Alphabet Check

- Alphabet vs Vowel

---

## 🎨 Pattern Programming

- Triangle Pattern

- Inverted Triangle

---

## ⚙️ Java Fundamentals

- Variables

- Loops

- Conditional Statements

- Input Handling

- Data Types

- Operators

- Random Utilities

---

# 📂 Repository Structure

```text
Java-Problem-Solving-For-Test-Automation-Engineers-Part-I
│
├── eclipse-workspace
│
└── JavaProgrammingInterviewQuestionPractice
│
└── src
│
├── String Programs
├── Number Programs
├── Array Programs
├── Pattern Programs
├── Character Programs
└── Utility Programs
```

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# 💼 Skills Demonstrated

This repository demonstrates practical understanding of:

- Core Java

- Problem Solving

- Algorithmic Thinking

- Programming Logic

- String Manipulation

- Array Operations

- Mathematical Programming

- Recursion

- Conditional Logic

- Looping Constructs

- Interview Coding

- Automation Engineering Fundamentals

---

# 🛠 Technology Stack

| Category | Technology |
|-----------|------------|
| Programming Language | Java |
| IDE | Eclipse |
| Version Control | Git |
| Repository | GitHub |
| Concepts | Core Java |
| Focus Area | Problem Solving |

---

# 🚀 Why This Repository Matters

Automation Engineers spend much more time writing Java code than simply writing Selenium scripts.

This repository demonstrates the programming foundation needed to build:

- Selenium Frameworks

- Playwright Frameworks

- REST Assured Automation

- Appium Frameworks

- TestNG Projects

- Enterprise Automation Solutions

---

# 📈 What Recruiters Will Find

This project showcases practical skills in:

✅ Core Java Programming

✅ Programming Logic

✅ Problem Solving

✅ Interview Preparation

✅ Automation Engineering Fundamentals

✅ Code Organization

✅ Clean Java Implementation

These are essential skills expected from QA Automation Engineers and SDETs working on enterprise automation projects.

---

# 🎯 Ideal Audience

This repository is useful for:

- QA Engineers

- Automation Test Engineers

- SDETs

- Java Developers

- Software Engineers

- Manual Testers transitioning to Automation

- Freshers preparing for coding interviews

- Professionals preparing for Selenium interviews

---

# 📖 Sample Interview Problems Included

Some of the coding problems implemented include:

- Reverse a String

- Palindrome String

- Prime Number

- Fibonacci Series

- Armstrong Number

- Array Equality

- Missing Number

- Duplicate Characters

- Reverse Array

- Factorial using Recursion

- Sorting Arrays

- Character Frequency

- Remove Whitespaces

- Remove Special Characters

- Swap Variables

- Pattern Printing

...and many more.

---

# 🚀 Learning Outcomes

After exploring this repository, you will be able to:

- Improve Java coding skills

- Solve common interview problems

- Build strong programming fundamentals

- Prepare for SDET interviews

- Write cleaner automation code

- Strengthen logical reasoning

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# 👨‍💻 About the Author

## Arpit Choubey

Passionate about solving programming challenges, designing automation frameworks, and sharing practical learning resources for the QA community.

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# 🌐 Connect With Me

### GitHub

https://github.com/ArpitChoubey

### LinkedIn

https://www.linkedin.com/in/arpitchoubey/

### Medium

https://medium.com/@ArpitChoubey9

---

# ⭐ Support

If you found this repository useful, please consider giving it a **Star ⭐**.

Your support motivates me to continue building and sharing enterprise-level QA Automation, Java, and SDET learning resources.

---

## 💡 *"Strong automation engineers are built on strong programming fundamentals. Every framework begins with problem-solving."*

Java-Problem-Solving-For-Test-Automation-Engineers-Part-I

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