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How would you utilize a hash table to efficiently solve the two sum problem in O(n) time complexity?

Can you explain how one might go about finding the common ancestors between two people listed in a family tree?

In your experience, what factors should be taken into consideration when determining the sample size for an A/B test? And how do you interpret the results to decide whether changes should be made?

Tell us about a time you failed to reach a goal.

Could you tell us why you'd make a good fit for Spotify?

Do you have any specific tricks you use to minimize residuals in statistical models?

What do you think would be your biggest challenge in the Spotify Data Scientist role?

Would you change anything to make Spotify better?

You are given a sorted list of integers, but some of the values are marked as -1 which indicates that they are out of range. Can you implement a method to determine the length of the list without using any built-in functions, and taking advantage of the sorted nature of the list?

Can you describe how Spotify's mission aligns with your long-term goals