Find the second largest element in a Binary Search Tree
Data Interview Questions
132,624 data interview questions shared by candidates
Case interview: basic business problem (if product X costs Capital One $4.00 per unit, with a $800 sunk cost, and we charge X amount of dollars along with a $10 annual fee, how many do we need to sell to break even, etc). Followed by a longer discussion of more complex problems that the situation might entail.
If you have 10 bags of marbles with 10 marbles each and one bag has marbles that weigh differently than the others, how would you figure it out from one weighing
How would you test if survey responses were filled at random by certain individuals, as opposed to truthful selections?
You are compiling a report for user content uploaded every month and notice a spike in uploads in October. In particular, a spike in picture uploads. What might you think is the cause of this, and how would you test it?
The three data structure questions are: 1. the difference between linked list and array; 2. the difference between stack and queue; 3. describe hash table.
How would you build and test a metric to compare two user's ranked lists of movie/tv show preferences?
If you have a 5*5*5 cubic, what is the outside surface area?
How do you take millions of users with 100's of transactions each, amongst 10k's of products and group the users together in a meaningful segments?
How would you design a recommendation system (like amazon)?
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