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Yes, variations of date range or interval generation problems appear in coding interviews, especially when testing iteration, date manipulation, and edge case handling. They also assess a candidate's ability to work with built-in time APIs.
A dynamic array or list is typically the best structure to store the generated dates. It preserves order and allows efficient appends as each new date in the range is produced.
The optimal approach is to iterate from the start date to the end date while incrementing the current date by one day at a time. Each generated date is appended to a result list. This ensures linear time relative to the number of days in the range.
Common edge cases include leap years, month boundaries, and whether the range is inclusive or exclusive. Using built-in date libraries or timestamp arithmetic helps avoid manual errors in date calculations.