AlgoCards: Code Interview Prepv1.0.9

What changed

• ContentIncreased problem count from 150 to 390 with Python solutions
• ContentAdded 30 company-specific problem lists
• New featureImplemented research-backed frequency ordering for problems
• ContentAdded specific trading firm OA problems like Stable Segments and Order Book Implementation
• ContentIntroduced new algorithm patterns including Josephus Problem and Maximum Drawdown
• MonetizationRemoved paywall and ads, making all content free
• RetentionAdded spaced repetition and weakness detection for all users

Original release notes

Massive content update:

- 390 problems (up from 150) with full Python solutions
- 30 company-specific problem lists including Citadel, Jane Street, Two Sigma, Google, Meta, Amazon, and more
- Research-backed frequency ordering — problems sorted by how often each company actually asks them
- Trading firm OA problems: Stable Segments, Currency Arbitrage Detection, Order Book Implementation
- New algorithm patterns: Count Inversions, Josephus Problem, Maximum Drawdown, Continuous Subarrays
- All content is now free — no paywall, no ads
- Spaced repetition and weakness detection for all users