识别信号
- Checks if you sort intervals before merging, as failing to sort leads to incorrect merges.
- Looks for a clean in-place or linear pass after sorting, showing understanding of array traversal and comparison.
- Expect discussion on linear time sorting alternatives like bucket sort or radix sort.
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 sort intervals first, causing incorrect overlap detection.
- Sorting the array normally violates the linear time constraint and may be penalized.
- Miscounting papers with exactly h citations or assuming strict greater-than.
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