There are N(sufficiently large) numbers that may repeat and x repeats more than N/2 times. Try to find an algorithm with time O(N) and space O(1) to find x.
Data Researcher Interview Questions
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How long do you give up one idea?
Build a tree where the parent can have any number of children. Find the coefficient of a quadratic polynomial if you know the value of y when you plug in any x.
If you had two products and had to ask one question of users to determine which they preferred more, what would you ask?
Hypothetical study design question.
Think about an app you like to use. Suppose the product manager tells you that he wants you to find the top 10 UX issues. How would you go about this?
What is the difference between GNB and logistic regression? Which one would you opt under different circumstances?
You have r red balls, w white balls in a bag. If you keep drawing balls out of the bag until the bag now only contains balls of a single color (ie you run out of a color) what is the probability you run out of white balls first? (in terms of r and w).
Game: I throw coin 5 times, you throw it 4 times, if I have more heads than you, I win, otherwise you win. What is the chance you will win?
Randomly generate points (x,y) on the circumference of a circle (two dimensions). What is Var(x)? What if you randomly generate points on the surface of a sphere instead?
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