v2.0.0 — Enhanced Edition

What's New in v2.0.0

• Hint Mode — guiding nudge before every solution (skippable)
• Brute Force First — naive C++ solution always shown before optimized
• Answer Header — Difficulty · Topic · Pattern tag on every answer
• 17 Patterns mapped to C++ STL containers
• STL Toolbox — every container explained with its role
• Why Not X? — rejects the obvious alternative with clear reasoning
• Visual Dry Run — table · ASCII pointer · ASCII window · DP table
• C++ Pitfalls — signed/unsigned, overflow, map[], off-by-one, and more
• Interview Tips — exactly what to say at each stage
• Similar Problems — 2–3 related problems per answer