Arrays & Hashing, Sliding Window, and System Design. A real sample of the teaching format.
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Courses and reference tools designed from real engineering practice—clear enough to learn from, rigorous enough to keep.
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Three sheets.
Real interview leverage.
Begin with Arrays & Hashing, Sliding Window, and System Design—26 polished pages that show exactly how the complete library teaches.
Get the free starter pack- 01Arrays & Hashing9 pages
- 02Sliding Window8 pages
- 03System Design9 pages
Choose your depth
Start small.
Expand when ready.
First 100 customers pay $15 once. Confirmed MotyWait subscribers receive the complete library for $9.99.
See the library ↘Inside the pages
See the format
before you decide.
Read the clues first
Let the constraint
narrow the answer.
The library teaches recognition before implementation: notice what the problem guarantees, then reduce the patterns worth considering.
Clue in the questionSorted input
Likely patternTwo pointers / binary search
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Complete collection · 30 updated PDFs
Complete Interview Pattern Library
Thirty branded interview references with recognition guidance, verified Python patterns, edge cases, practice tests, and authoritative sources.
- 30 focused interview cheat sheets
- Recognition frameworks and decision guides
- Python 3.12+ verification notes and complexity analysis
- Edge-case checklists and high-value practice tests
- Authoritative references and secure personal delivery
Founding offer First 100 customers
$15one-time · subscribers pay $9.99 · regular price $29
- 30 PDFs total: 3 free samples and 27 paid references
- Private email delivery after verified Stripe payment
- Library access remains available for 30 days
- Each paid PDF may be downloaded once and is personalized for the purchaser
- Personal-use license; no redistribution or resale
A good fit if
You want to recognize,
not just memorize.
- You are preparing for software-engineering interviews
- You want concise references instead of another long course
- You already know some code and need stronger pattern selection
- You value edge cases, testing, and trade-off explanations
Not designed for
This is not
a shortcut around practice.
- A complete beginner programming curriculum
- A promise of a particular interview outcome
- Material intended for redistribution or resale
- A replacement for solving problems under realistic constraints
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- 01Pay securely
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- 02Check your email
Your private access link is sent automatically after verified payment and remains active for 30 days.
- 03Download your set
Each of the 27 paid PDFs is personalized for you and may be downloaded once.
Reader notes
Decide with
real context.
Approved customer notes are published with consent. Read the review policy or share an experience after using the library.
Read or leave a reviewInside the complete library
Every pattern,
within reach.
04Inplace Linked List Reversal05Tries06Topological Sort07Merge Intervals08Bit Manipulation09Backtracking10Graph Algorithms11Binary Search on Answer12Subsets, Permutations & Combinations13K-way Merge14Dynamic Programming15Cyclic Sort16Segment & Fenwick Tree17Prefix Sum18Design Data Structures19Binary Search20Matrix Traversal21Fast & Slow Pointers22Greedy23Trie String Matching24Monotonic Queue25Two Pointers26Two Heaps27Trees28Stack29Heaps30Union Find
Reader notes
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Read or leave a reviewIn the studio
What comes next.
The Pattern Vault
118 focused algorithm and data-structure references across 16 categories.
In developmentAI System Design Field Notes
Architecture canvases, evaluation checklists, reliability patterns, and client briefs.
PlannedGo Engineering Guides
Practical references built around stable APIs, concurrency, and production backend thinking.
PlannedSecure checkout: payments are processed by Stripe. Final product delivery and refund terms are shown before purchase.
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