DSA Mastery Workspace

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DSA Problem Solving Roadmap

Step-by-step interactive learning path from fundamentals to advanced algorithms

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Phase 1 • Problem-Solving Foundations 🎯 Practice: 30–40 Problems

Math, Logic & Basic Programming

Build the thinking skills required before learning advanced data structures.

🎯 Goal: Learn to convert a real-world question → steps → algorithm → code.
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Basic Math Problems Digit Sum • Count Digits • Reverse Number • Palindrome Number • Armstrong Number • Prime Number • GCD & LCM
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Loops & Patterns Nested Loops • Number Patterns • Star Patterns • Counting • Series • Basic Simulation
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Logical Problem Solving Maximum/Minimum • Even/Odd • Factors • Divisibility • Frequency • Simple Conditions
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Complexity Basics O(1) • O(log n) • O(n) • O(n²) • Time vs Space
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Phase 2 • Core Data Structures 🎯 Practice: 40–50 Problems

Arrays, Strings & Hashing

Learn how to store, access, search, and organize information efficiently.

🎯 Goal: Understand what data structure fits the problem.
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Arrays Traversal • Searching • Insertion • Deletion • Reverse • Rotation • Subarrays
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Strings Character Counting • Reverse • Palindrome • Anagram • Substrings
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Hashing Hash Map • Hash Set • Frequency Map • Duplicate Detection • Fast Lookup
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Essential Problems Contains Duplicate • Valid Anagram • Two Sum • Majority Element • Group Anagrams
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Phase 3 • Problem-Solving Patterns 🎯 Practice: 50–70 Problems

Two Pointers, Sliding Window, Prefix Sum & Binary Search

Start recognizing patterns instead of solving every problem from scratch.

🎯 Goal: Learn to recognize patterns that reduce unnecessary work.
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Two Pointers Opposite Direction • Same Direction • Pair Problems • Sorted Arrays • Palindrome
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Sliding Window Fixed Window • Variable Window • Longest Subarray • Longest Substring
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Prefix Sum Range Sum • Subarray Sum • Cumulative Information
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Binary Search Normal Search • First/Last Position • Rotated Array • Search Space • Binary Search on Answer
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Phase 4 • Linear & Recursive Structures 🎯 Practice: 50–70 Problems

Linked Lists, Stack, Queue & Recursion

Learn pointer manipulation and recursive thinking.

🎯 Goal: Learn to break a large problem into smaller manageable problems.
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Linked Lists Singly List • Doubly List • Reverse List • Middle Node • Fast & Slow Pointer • Cycle Detection
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Stack & Queue LIFO • FIFO • Valid Parentheses • Min Stack • Monotonic Stack • Next Greater Element
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Recursion Base Case • Recursive Call • Call Stack • Factorial • Fibonacci • Array Recursion
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Backtracking Intro Choose • Explore • Undo • Subsets
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Phase 5 • Non-Linear Data Structures 🎯 Practice: 60–80 Problems

Trees, Heaps & Graphs

Learn to work with hierarchical and connected data.

🎯 Goal: Learn how to traverse, explore, and process complex relationships.
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Trees & BST DFS • BFS • Preorder • Inorder • Postorder • Level Order • Height • Search
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Heaps & Priority Queue Min Heap • Max Heap • Kth Largest • Top K • Task Scheduling
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Graphs Adjacency List • BFS • DFS • Connected Components • Cycle Detection
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Graph Algorithms Shortest Path • Topological Sort • Union Find • MST Basics
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Phase 6 • Advanced Problem Solving 🎯 Practice: 80–100 Problems

Backtracking, Dynamic Programming & Interview Thinking

Solve problems where brute force is too expensive.

🎯 Goal: Stop asking “Have I seen this exact problem?” and start asking “What idea can solve this?”
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Backtracking Permutations • Combinations • Combination Sum • N-Queens • Maze Problems
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1D Dynamic Programming Climbing Stairs • House Robber • Coin Change • Decode Ways • LIS
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2D Dynamic Programming Grid Problems • Knapsack • LCS • Subsequence Problems
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DP Thinking Recursion → Identify State → Memoization → Tabulation → Space Optimization
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Interview Problem Solving Understand → Example → Brute Force → Find Bottleneck → Optimize → Code → Test → Complexity
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🎓 Placement Preparation

Complete 6-step roadmap for campus placements & tech interviews: First Steps, Spoken Communication, Aptitude & Quant, DSA Sheets, CS Core Theory, and HR Round Prep.

28+ Verified Resources
6 Structured Tracks
ATS Resume Scanners
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4 Video Masterclasses

Things You Must Do First

Essential starter steps for every developer & candidate before starting placement prep.

LinkedIn Optimization & Networking Complete guide to build a recruiter-attracting LinkedIn profile & network
Watch
GitHub Essentials & Workflow Master Git, GitHub repositories, commits, and showcasing projects effectively
Watch
LeetCode Setup & Strategy How to use LeetCode efficiently to master DSA and crack coding rounds
Watch
Create GitHub README Profile Design a stunning, professional GitHub profile README with stats & badges
Watch
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4 Verified Links

Communication & Soft Skills

Spoken English fluency, peer mock communication, and HR interview etiquette.

10 Ways to Improve Communication Skills Essential soft skills & spoken communication guide for campus interviews
Open
Essential Soft Skills for Software Engineers Key interpersonal, teamwork, and communication skills for tech roles
Open
PeerUp App (Spoken English & Communication) Practice live spoken English and interview communication with peers
Open
Behavioral Interview & STAR Framework Structure your interview answers using the Situation, Task, Action & Result framework
Open
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4 Verified Links

Aptitude & Logical Reasoning

Quantitative math, logical reasoning, verbal ability & shortcuts for campus tests.

GeeksforGeeks Aptitude Questions & Answers Comprehensive solved aptitude questions for campus placement tests
Open
IndiaBIX Quantitative Aptitude Time & Work, Speed & Distance, Profit & Loss, Probability, Permutations
Open
IndiaBIX Logical Reasoning Blood Relations, Coding-Decoding, Syllogism, Seating Arrangements
Open
PrepInsta Aptitude Test Series Company specific aptitude test patterns (TCS, Infosys, Wipro, Accenture)
Open
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4 Verified Links

Programming Languages Important Questions

Top interview questions & core concepts for SQL, Java, Python, and C language.

SQL Query Interview Questions Top SQL queries, joins, indexing, and database interview questions
Open
Java Interview Questions Core Java, OOPs concepts, Collections, Multithreading & Exception handling
Open
Python Interview Questions Python basics, data structures, decorators, generators & OOPs
Open
C Programming Interview Questions Pointers, memory management, structures, arrays, and C language fundamentals
Open
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5 Verified Links

DSA & Coding Sheets

Top curated problem sheets, company patterns, and interactive mock coding platforms.

Striver's SDE Sheet & Company Questions Curated company-wise top asked interview questions (Amazon, Adobe, Microsoft)
Open
NeetCode 150 Practice Roadmap Interactive 150 topic-wise problems with video solutions & patterns
Open
Blind 75 LeetCode Questions The 75 most essential LeetCode DSA questions for tech interviews
Open
LeetCode Top Interview 150 Official LeetCode curated 150 interview problems list
Open
Pramp (Free Peer Mock Coding) Practice live 1-on-1 coding & behavioral interviews with peers
Open
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6 Verified Resources

CS Core Subjects (OS, DBMS, CN, System Design)

Essential theoretical fundamentals & system architecture for technical interview rounds.

CS Core Tutorial in Tamil Complete CS Core fundamentals (OS, DBMS, CN) explained clearly in Tamil
Watch
System Design Course Comprehensive High-Level & Low-Level System Design architecture guide
Watch
Operating Systems (OS) Processes, Threads, CPU Scheduling, Deadlocks, Memory & Virtualization
Open
Computer Networks (CN) OSI & TCP/IP Stack, IP Addressing, Subnetting, Protocols & Security
Open
Database Management System (DBMS) Relational Databases, Normalization, ACID Properties, Transactions & SQL
Open
Important CS Core Questions & Answers Top interview questions and answers across OS, DBMS, CN, and SQL
Open
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5 Verified Links

Interview Prep, Resume & HR Round

Professional ATS resume templates, ATS scanners, technical & HR interview questions.

Jake's Resume Template (GitHub / LaTeX) Most popular ATS-friendly Single Page LaTeX Software Engineer Resume
Open
Resume Worded (ATS Checker) Scan your resume against ATS bots & get instant scoring & suggestions
Open
GeeksforGeeks Technical Interview Questions Company-wise technical interview questions for Software Engineers
Open
GeeksforGeeks HR Interview Questions Comprehensive list of HR round questions, behavioral scenarios & tips
Open
GeeksforGeeks CS Subjects Interview Questions Top interview questions & answers across core CS subjects (OS, DBMS, CN, SQL, OOPs)
Open

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