generate fibonacci sequence core interview pattern Pattern
1 problems
Pattern pages help build reusable solving frames. Identify signals first, then explain state, transition, and edge handling.
Recognition Signals
- Check if the candidate correctly uses JavaScript generator syntax for lazy evaluation.
- Notice if the candidate handles callCount = 0 without producing any output.
Solve Flow
- 1. Define the active state/window.
- 2. Update state while preserving invariants.
- 3. Validate with edge-heavy examples.
Common Misses
- Returning an array instead of a generator breaks the lazy generation pattern.