Fast Intersection of Sorted Lists Using SSE Instructions
Intersection of sorted lists is a cornerstone operation in many applications including search engines and databases because indexes are often implemented using different types of sorted structures. At GridDynamics, we recently worked on a custom database for realtime web analytics where fast intersection of very large lists of IDs was a must for good performance. From a functional point of view, w
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Programming Interview Questions: How do you find out intersection between two arrays - when they are sorted / when they are not sorted.?
