minimum removals to balance array 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
- Sorting is likely expected to simplify the ratio check.
- Sliding window hints at using two pointers to maximize the valid subarray length.
Solve Flow
- 1. Define the active state/window.
- 2. Update state while preserving invariants.
- 3. Validate with edge-heavy examples.
Common Misses
- Forgetting that removing elements cannot leave the array empty.