10 classic problems, each with its own detailed file. Every problem has multiple approaches, step-by-step walkthroughs, and full JavaScript solutions.

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#	Problem	Pattern	Difficulty	File
1	Search in Rotated Sorted Array	Pattern 4 — Rotated	🟡 Medium	Open →
2	Find Minimum in Rotated Array	Pattern 4 — Rotated	🟡 Medium	Open →
3	Search a 2D Matrix	Pattern 1 — Classic	🟡 Medium	Open →
4	Find Peak Element	Pattern 5 — Monotonic	🟡 Medium	Open →
5	Koko Eating Bananas	Pattern 3 — Answer Space	🟡 Medium	Open →
6	Capacity to Ship Packages	Pattern 3 — Answer Space	🟡 Medium	Open →
7	Split Array Largest Sum	Pattern 3 — Answer Space	🔴 Hard	Open →
8	Find Sqrt(x)	Pattern 3 — Answer Space	🟢 Easy	Open →
9	First Bad Version	Pattern 5 — Monotonic	🟢 Easy	Open →
10	Time-Based Key-Value Store	Pattern 1 — Classic	🟡 Medium	Open →

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Pattern	Problems
Pattern 1 — Classic	3 (2D Matrix), 10 (Time-Based KV)
Pattern 3 — Answer Space	5 (Koko), 6 (Ship), 7 (Split Array), 8 (Sqrt)
Pattern 4 — Rotated Array	1 (Search Rotated), 2 (Find Min)
Pattern 5 — Monotonic Function	4 (Peak Element), 9 (First Bad Version)

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Step	Problem	Why
1	Sqrt(x)	Easiest — simple answer space
2	First Bad Version	Classic boundary search
3	2D Matrix	Classic search in 2D
4	Find Peak Element	Clever monotonic insight
5	Koko Bananas	Classic answer space
6	Rotated Search	Trickiest logic
7	Find Min Rotated	Companion to #6
8	Ship Packages	Answer space variation
9	Split Array	Hard — same pattern as #8
10	Time-Based KV	System design + BS

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Start with: Sqrt(x) → (easiest)