DSA 2026

A complete Data Structures and Algorithms learning repository containing notes, implementations, practice questions, and solutions written in Java.

Topics Covered

Arrays

• Array Basics
• Traversal
• Searching
• Array Problems

2D Arrays

• Matrix Operations
• Traversal Techniques
• Matrix-Based Problems

ArrayList

• Dynamic Arrays
• Operations
• Practice Questions

Strings

• String Manipulation
• StringBuilder
• Pattern Problems
• String Algorithms

Hashing

• HashMap
• HashSet
• Frequency Counting
• Lookup Optimization

Sorting

• Bubble Sort
• Selection Sort
• Insertion Sort
• Merge Sort
• Quick Sort
• Sorting-Based Problems

Object Oriented Programming

• Classes & Objects
• Constructors
• Inheritance
• Polymorphism
• Encapsulation
• Abstraction

Time & Space Complexity

• Big O Notation
• Time Analysis
• Space Analysis
• Optimization Techniques

DSA Question Practice

• LeetCode Problems
• Pattern-Based Questions
• Problem Solving Approaches
• Interview Questions

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Goal

This repository documents my complete DSA learning journey throughout 2026. The objective is to strengthen problem-solving skills, master core data structures and algorithms, and prepare for coding interviews.

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Language

• Java

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📂 Repository Structure

DSA_2026
│
├── Arrays(Part-1)
├── Arrays_2D
├── ArrayList
├── Strings
├── Hashing
├── Sorting
├── Object_Oriented_Programming
├── Time & Space Complexity
└── DSA_Question_Practice

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Author

Saurav Pandit

Documenting my DSA journey, practice problems, and solutions while preparing for software engineering interviews.

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