🔥 Stop Grinding 900 LeetCode Problems. Learn the 90 Patterns That Solve Them All.
Most engineers fail coding interviews not because they're bad at coding, but because they memorize solutions instead of recognizing patterns.
You've solved 200 problems. You still freeze on a new one. Sound familiar?
The problem isn't your effort. It's your system.
This ebook gives you the system.
What's Inside
90 battle tested patterns that cover 900+ LeetCode problems — organized by the way interviewers actually think, not by difficulty or topic tags.
Every pattern includes:
✅ The Core Idea — the one sentence mental model you'll never forget
✅ Pattern Recognition Triggers — how to spot this pattern in 10 seconds during an interview
✅ Curated Problem List — the exact 7–10 problems that teach the pattern
✅ Commonly Used In — where this pattern shows up in real system design and other problems
Patterns covered:
Hash Map · Stack & Queue · Linked List · Two Pointers
Binary Search · Sorting · Greedy · Intervals
Trees · Heaps · Graphs · Union Find
Dynamic Programming · Bit Manipulation · Design Problems
+ the "Find Your Gap" self assessment framework
Who This Is For
Who This Is NOT For
Why This Works
Most interview prep fails because it's problem first. You solve 500 problems, hope patterns stick, and forget them under pressure.
This ebook is pattern first. You learn 90 mental models. Each one unlocks 10+ problems. You stop memorizing and start recognizing.
That's the difference between someone who's "done LeetCode" and someone who passes the interview.
What You Get
📄 27 page PDF : designed for fast scanning, not dense reading
🧠 90 patterns across every major interview topic
🎯 900+ problems mapped to the right pattern
📊 Self assessment framework to find your weakest area
🔗 Direct links to every problem (coming in v2)
About the Author
I'm a software engineer at Amazon Prime Video with 4.5 years of experience across backend engineering and AI systems. I've been through the big tech interview loop and I built this because I wish it existed when I was preparing.
I share AI systems, backend engineering, and big tech career content on Instagram @ankitcode99.
The Promise
Stop preparing more. Start preparing where you're weak.
This isn't another problem list. It's the map that tells you which problems to solve and why.
👉 Get instant access. Start today. Walk into your next interview with a system, not a prayer.