DSA with C++ & Java

LevelUp DSA – Crack Coding Interviews with Confidence 🚀

This is a complete DSA handbook designed for students and professionals preparing for coding interviews. Unlike scattered resources, this guide is structured to take you from zero → advanced, with theory, intuition and practice problems in C++ and Java all in one place.

🔹 What You’ll Get

✅ Step-by-step coverage – Basics to advanced (Arrays → DP → Graphs → Backtracking → Advanced Topics)

✅ Clear explanations & diagrams – Focus on building intuition, not memorization

✅ C++ & Java solutions – Industry-standard code with detailed walkthroughs

✅ Complexity analysis – Time & space trade-offs explained for every solution

✅ Interview-focused problems – Handpicked from LeetCode, GFG, and FAANG interviews

📂 Topics Included

• Arrays & Strings (Sliding Window, Two Pointers, Kadane’s Algorithm)
• Searching & Sorting (Binary Search, Quick Sort, Merge Sort)
• Linked List (Reversal, Cycle Detection, K-Group Reversal)
• Stacks & Queues (Min Stack, Sliding Window Maximum)
• Trees & BST (Traversals, LCA, Balanced Trees)
• Graphs (DFS, BFS, Topological Sort, Dijkstra)
• Dynamic Programming (Knapsack, LIS, LCS, Coin Change, Matrix Chain Multiplication)
• Recursion & Backtracking (N-Queens, Sudoku Solver, Rat in a Maze)

🎯 Why This Guide?

• Simple yet complete – Avoids heavy academic theory but explains concepts deeply.
• Built for interviews – Covers the exact problems recruiters ask.
• Saves time – No need to jump between YouTube, blogs, and textbooks.