Given a binary tree, write a function to check if it is a valid binary search tree (BST).
Backend Engineer Interview Questions
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What was asked in machine coding round ?
1. Machine coding, tail -f 2. Machine coding round 2, browser controller 3. EM- Map reduce 4. Doe- Large file containing process IDs start, and end time, a timeout is provided, print all process IDs > timeout
Setup a simple service with high availability.
Difference between a SQL and a columnar db
Live coding - implement HTTP API endpoint which should upload a document.
How to implement a DB index for a string field How to implement a DB index for a numeric range (e.g give me all rows with age > 10 and <50 and describe the algorithm to get those rows (including o notation) How to implement an index combining both string field and numeric range
Create an application that helps users find the most relevant recipes that they can prepare with the ingredients that they have at home Deliver an application prototype to answer the above problem statement. By prototype, we mean: something usable, yet as simple as possible UI / design is not important we do not expect features which are outside the basic scope of the problem We expect to use this prototype as a starting point to discuss current implenentation details, as well as ideas for improvement.
Okay, assume it is POST. Will you process it synchronously?
Just a CV questions...And a great Logic test.
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