Implement Function to Determine Mode and Prime Numbers
AmazonData Scientist · Technical Screen
Last updated
This question evaluates algorithmic problem-solving skills, including frequency analysis for mode computation, correct handling of ties and uniqueness edge cases, and basic number-theoretic competency for prime identification.
Scenario
Implementing utility algorithms within a data-processing library.
Question
Write a function that returns the mode of an integer list; if all values are unique return None, and support multiple modes when ties exist. Given an integer array containing 1 to n, output all prime numbers in the array.
Hints
Emphasize time complexity and edge-case handling.
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