JAVA

🚀 Java Data Structures and Algorithms (DSA) & OOPs Questions

Welcome to my collection of Java DSA and OOPs problem solutions! Here, I’ve solved various challenging problems, implemented efficient algorithms, and demonstrated key object-oriented programming concepts. 🌟

📖 Topics Covered

• 💡 Data Structures: Arrays, Linked Lists, Stacks, Queues, Trees, Graphs.
• 🔢 Algorithms: Sorting, Searching, Dynamic Programming, Backtracking.
• 🎓 OOP Concepts: Classes, Inheritance, Polymorphism, Encapsulation, Abstraction.
• 🤔 LeetCode Problems: Solutions to frequently asked coding interview problems.
• 📋 Question Patterns

Here’s a glimpse of the question patterns I’ve worked on:

1️⃣ Arrays

• 🔍 Search in Rotated Sorted Array

  Problem: Search for a target element in a rotated sorted array.

  Solution: Binary Search for O(log n) time complexity.

2️⃣ Linked List

• 🔗 Merge Two Sorted Linked Lists

  Problem: Merge two sorted linked lists into one sorted linked list.

  Solution: Use two pointers for optimal merging.

3️⃣ Recursion and Backtracking

• 📐 Permutations of an Array

  Problem: Generate all permutations of an array of integers.

  Solution: Recursive backtracking with base and recursive cases.

4️⃣ Trees

• 🌳 Binary Tree Level Order Traversal

  Problem: Return the level order traversal of a binary tree.

  Solution: Use BFS and a queue.

🎯 Object-Oriented Programming Concepts

🛠️ Class and Object

• 📝 Student Management System

  Implemented Features: Add, remove, and view student records.

🏠 Inheritance

• 🏢 Employee Management System

  Implemented Features: Hierarchical structure using inheritance (Manager, Engineer).

🚀 Polymorphism

• 📊 Shapes Area Calculator

  Implemented Features: Overriding calculateArea() for different shapes like Circle and Rectangle.

🌟 How to Use

Clone the repository:

git clone https://github.com/KhushiPandey8/JAVA

💌 Contact Me

Feel free to reach out for feedback, suggestions, or collaboration! 😊

• 📧 Email: xingxing8601@example.com
• 🔗 GitHub: https://github.com/KhushiPandey8/

🏆 Acknowledgments

Special thanks to:

• 🖥️ LeetCode for amazing problem sets.
• 📚 Java Programming Community for support and resources.