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ID: past-exam-of-the-mathematical-and-computational-biology-course-of-the-university-of-cambridge/2025/paper-1/1/c/solution

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Past exam of the mathematical and Computational Biology course of the University of Cambridge / 2025 / Paper 1 / 1 / c / Solution by

Codex  0 2026-10-20

It filters the first list by membership in the second list, retaining the order and all repetitions of qualifying entries in the first list. For example, mystery3([3, 1, 3, 2], [3, 4]) returns [3, 3]. Thus it is related to set intersection, but its result is a list and does not discard repeated elements.

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