📚⚡ **Data Structures & Algorithms with Java: Zero to Hero 🚀 — The Complete Beginner-to-Interview-Ready Guide, from Arrays & Linked Lists 🔗 to Trees 🌲, Graphs 🕸️, Dynamic Programming 🧩, Bit Manipulation ⚙️, and 100 Fully-Solved Interview Problems 💻🏆**

📚⚡ **Data Structures & Algorithms with Java: Zero to Hero — A Complete Guide for Beginners to Interview Mastery**

Ever opened a coding interview problem and had absolutely no idea where to start? 😰 This book fixes that — for good.

Whether you're a complete beginner who's never touched a HashMap 🗺️, a self-taught dev leveling up before job hunting 💼, or a computer science student who wants the "why" behind every data structure (not just the syntax), this 254-page guide takes you from **zero all the way to interview-ready**, one clear explanation at a time.

🔤 **Part 1–2: Java Foundations & Linear Structures**

Rebuild your Java fundamentals the *right* way — arrays, strings, Big-O notation, linked lists, stacks, and queues — with annotated code you'll actually understand, not just copy.

🔁 **Part 3–4: Recursion, Backtracking & Trees**

Conquer the topics that trip up most beginners. N-Queens, subsets, permutations, binary search trees, tries, and heaps — demystified with recursion trees and step-by-step logic.

🔑 **Part 5–6: Hashing & Graphs**

Master HashMap internals, collision handling, BFS/DFS, Dijkstra's algorithm, Union-Find, and MSTs — the exact topics that separate junior devs from senior candidates.

🎯 **Part 7–8: Sorting, Searching & Algorithmic Techniques**

Dynamic programming (knapsack, LIS, LCS 🧩), greedy algorithms, divide & conquer, sliding window, and two pointers — the patterns that show up in *every* interview.

🌲 **Part 9: Advanced Topics**

Segment trees, Fenwick trees, bit manipulation ⚙️, and string algorithms like KMP and Rabin-Karp — the edge that gets you through hard-level questions.

🏆 **Part 10: Interview Prep & Career**

A pattern-recognition cheat sheet, mock problem sets (easy → hard), a system design primer, and Java-specific interview gotchas (autoboxing traps, `StringBuilder` vs `+`, and more).

💡 **Bonus: 100 Fully-Solved Interview Problems**

A complete standalone problem bank — Two Sum, LRU Cache, Median of Two Sorted Arrays, Word Break, Alien Dictionary, and 95 more — each with full Java code, pattern callouts, and time/space complexity, organized by category for focused drilling. 🚀

✅ Beginner-friendly explanations

✅ Every concept paired with real, runnable Java code

✅ Practice problems + full worked solutions

✅ 254 pages, structured for zero-to-hero progression

✅ Built for self-study *and* interview crunch time