识别信号
- The candidate should demonstrate familiarity with string manipulation and bitwise operations.
- Look for clarity in how they explain the iterative process and how they handle even/odd cases.
- Candidate immediately checks for impossible conversion when s has no ones and target does.
解题流程
- 1. 明确窗口/状态定义
- 2. 更新状态并维护约束
- 3. 用边界样例验证
常见失分点
- Misunderstanding the even/odd rule and applying the wrong operation (e.g., dividing by 2 when the number is odd).
- Forgetting that a string of all zeros cannot produce any ones, leading to incorrect true return.