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The Coding Patterns That Solve Everything

Stop memorizing problems. Learn the dozen shapes they are all made of.

Rolling out

# Recognize which pattern an unseen problem wants, apply it under interview pressure, and spot the same patterns running inside real production systems.

Want to Learn → Deep DiveDSA42 posts1 demos2h 38m core · 7h 47m full13/15 live
0/16 core steps done0%
Start path

# a suggested order, not a lock: jump anywhere, checkpoints track what you finish

  1. start here
    Introduction to DSA Coding Patterns SeriesDeep Dive12 min

    Why a small vocabulary of patterns beats brute memorization.

  2. DSA Patterns12 posts · 2h 5m 12 self-checks

    The core dozen: two pointers, sliding window, prefix sums, monotonic stacks, intervals, search, divide and conquer, DP and linked lists.

    1. Two Pointers PatternDeep Dive10 minquiz
    2. Fast & Slow Pointers (Tortoise and Hare)Deep Dive11 minquiz
    3. Sliding Window PatternDeep Dive10 minquiz
    4. Prefix Sum PatternDeep Dive10 minquiz
    5. Monotonic Stack / Queue PatternDeep Dive11 minquiz
    6. Merge Intervals PatternDeep Dive11 minquiz
    7. Sorting-Based PatternsDeep Dive11 minquiz
    8. Divide & Conquer StrategyDeep Dive11 minquiz
    9. Binary Search (and Variants)Deep Dive10 minquiz
    10. Overlapping IntervalsDeep Dive10 minquiz
    11. Greedy AlgorithmsDeep Dive10 minquiz
    12. Linked List Techniques (Dummy Node, In-Place Reversal)Deep Dive10 minquiz
  3. DSA Lab10 mindemo

    Step through the two-pointer trace on the exact array from the article.

  4. DSA Patterns16 posts · 2h 38m 13 self-checks optional

    The rest of the catalog: heaps, trees, graphs, tries, union-find, bit tricks and two-heaps.

    1. Top-K Elements (Heap / QuickSelect)Deep Dive10 minquiz
    2. Kth Largest/Smallest ElementsDeep Dive10 minquiz
    3. Hashmaps & Frequency CountingDeep Dive8 minquiz
    4. Dynamic Programming (1D, 2D, Knapsack, Range DP)Deep Dive10 minquiz
    5. Backtracking & Recursive SearchDeep Dive10 minquiz
    6. Graph Traversals (BFS, DFS)Deep Dive10 minquiz
    7. Topological SortDeep Dive10 minquiz
    8. Binary Tree Traversals (Preorder, Inorder, Postorder, Level Order)Deep Dive10 minquiz
    9. Path Sum & Root-to-Leaf TechniquesDeep Dive10 minquiz
    10. Matrix TraversalDeep Dive10 minquiz
    11. Expression Evaluation (Stacks & Queues)Deep Dive10 minquiz
    12. Design Problems (LRU Cache, Twitter, Rate Limiter, etc.)Deep Dive10 min scheduledquiz
    13. Trie / Prefix Tree PatternDeep Dive8 min scheduledquiz
    14. Union-Find (Disjoint Set Union)Deep Dive11 min scheduled
    15. Bit ManipulationDeep Dive11 min scheduled
    16. Two HeapsDeep Dive10 min scheduled
  5. Mastering the DSA Patterns: Final ThoughtsDeep Dive6 min scheduledquiz

    Tie the patterns into one mental map before the capstone.

  6. DSA Patterns Mastery QuizDeep Dive5 minquiz

    Checkpoint: the full-series mastery quiz. Clearing it is how you prove the vocabulary actually stuck.

  7. DSA in Practice12 posts · 2h 26m 11 self-checks optional

    Watch the same patterns solve real problems: fraud detection, routing, recommendations, supply chains. Each stop carries its own self-check.

    1. Introduction to the Real-World DSA SeriesDeep Dive10 min scheduled
    2. Optimizing Web Traffic: Peak Detection and Anomaly TrackingDeep Dive12 min scheduledquiz
    3. E-commerce Inventory Management: Predicting Stock DepletionDeep Dive12 min scheduledquiz
    4. Delivery Route Optimization: Minimizing Time and CostDeep Dive14 min scheduledquiz
    5. Recommendation Systems: Personalized Suggestions Using DSADeep Dive12 min scheduledquiz
    6. Fraud Detection in Transactions: Identifying Suspicious PatternsDeep Dive12 min scheduledquiz
    7. Marketing Campaign Optimization: Maximizing ROIDeep Dive12 min scheduledquiz
    8. Social Network Analysis: Detecting Influence and CommunitiesDeep Dive14 min scheduledquiz
    9. Stock Market Trend Analysis: Detecting Patterns and MovesDeep Dive12 min scheduledquiz
    10. Logistics and Supply Chain Optimization: Routing and InventoryDeep Dive14 min scheduledquiz
    11. Real-time Fraud Prevention in E-commerceDeep Dive12 min scheduledquiz
    12. Concluding Insights on Applying DSA Patterns in Real-World ProblemsDeep Dive10 min scheduledquiz
  8. DSA in Practice: Final AssessmentDeep Dive5 minquiz
    optional

    Final assessment: picking the right pattern for a real system under real constraints.

  9. You can name the pattern behind an unseen problem on sight