📂 DSA Roadmap (From Zero to Placement Ready) ┃ ┣ 📂 Foundations ┃ ┣ 📂 Time & Space Complexity ┃ ┣ 📂 Big-O Notation ┃ ┣ 📂 Recursion Basics ┃ ┗ 📂 Basic Math (GCD, Prime, etc.) ┃ ┣ 📂 Core Data Structures ┃ ┣ 📂 Arrays & Strings ┃ ┣ 📂 Linked List ┃ ┣ 📂 Stack & Queue ┃ ┣ 📂 Hashing (Map/Set) ┃ ┗ 📂 Sliding Window / Two Pointers ┃ ┣ 📂 Intermediate Algorithms ┃ ┣ 📂 Binary Search ┃ ┣ 📂 Sorting Techniques ┃ ┣ 📂 Prefix Sum ┃ ┣ 📂 Recursion + Backtracking ┃ ┗ 📂 Bit Manipulation ┃ ┣ 📂 Advanced Data Structures ┃ ┣ 📂 Trees (Binary Tree, BST) ┃ ┣ 📂 Heaps / Priority Queue ┃ ┣ 📂 Graphs (BFS, DFS) ┃ ┣ 📂 Tries ┃ ┗ 📂 Disjoint Set (Union-Find) ┃ ┣ 📂 Advanced Algorithms ┃ ┣ 📂 Dynamic Programming ┃ ┣ 📂 Greedy Algorithms ┃ ┣ 📂 Graph Algorithms (Dijkstra, Floyd) ┃ ┣ 📂 Topological Sort ┃ ┗ 📂 Shortest Path Problems ┃ ┣ 📂 Practice & Patterns ┃ ┣ 📂 LeetCode / Codeforces ┃ ┣ 📂 Pattern Recognition ┃ ┣ 📂 Timed Practice ┃ ┣ 📂 Mock Interviews ┃ ┗ 📂 Revision Strategy ┃ ┣ 📂 Placement Preparation ┃ ┣ 📂 Company-wise Questions ┃ ┣ 📂 System Design Basics ┃ ┣ 📂 Core CS (OS, DBMS, CN) ┃ ┗ 📂 Behavioral Questions Follow this consistently for 4–6 months and you’ll be ahead of 90% candidates ( save this! )