If you have billion records and you can access them only one at a time, how do you get 100 records randomly ?
Learning Engineer Interview Questions
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A coding problem
Random Walk Distances On Graphs Given a graph and any pair of vertices i and j, it is possible to take a random walk starting from i and eventually arrive at j, if i is connected to j. Specifically, starting at i, each time we choose an edge to traverse randomly according to some probability distribution P, and repeat until we arrive at j for the first time. The number of edges traversed is a random variable with some expected value, which is the expected random walk distance from i to j. By this definition, the expected random walk distance from a vertex to itself is always 0. Furthermore, multiple traversals of an edge are also counted in the random walk distance. Your task is to write a program to estimate the expected random walk distance between all pairs of vertices in a given graph.
Both techical screening and algorithms interview were Leetcode-style questions. I never saw exactly same problems on Leetcode, but very similar (Medium level)
Systems Design for how Rokt's product works (think how Amazon recommends products when you add something to your basket/look at a product).
Machine round test a good one
Given a certain form of data, asking to write codes to predict the classes.
Q: Detect balanced parentheses (brackets, curly braces, etc) in a string.
Implement KNN coding and general ML clustering Questions
Given list of intervals as (start, end), where each interval is a task runtime, how many CPUs that can run one task are needed to run all tasks?
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