识别信号
- Check how you handle carries at each node and whether your pointers correctly traverse both lists.
- Notice if you address unequal list lengths without skipping nodes or losing digits.
- Look for knowledge of linked-list pointer manipulation.
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
- Failing to propagate carry to a new node after both lists are processed.
- Not properly handling the edge case where the list has only one element or when n is equal to the list length.
- Failing to handle the case where one list is empty.
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