Welcome to your interview.
The question is on your right: Linear-Time Pattern Detection. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Given an unsorted array, design an algorithm to find specific patterns or subarray combinations in linear time.