Coding test: 1. Given a string, find out if there's repeat characters in it. 2. SQL. Given a Customer table and a Payment table (with Customer ID as primary and foreign key), write a query to output a list of customers who have not paid their bills in the last 3 months.
Most of the technical questions focused on power supply design. For this position this is a one of the more difficult tasks so they want to know how switching regulators work and different trade offs involved.
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Most difficult question is of Salary expectations.
Input is a string like "AAAAABBCCAA" and it should print "5A2B2C2A". 5 being the continuous number of occurance for character 'A'. Same is with other characters also.
Given an array of numbers, e.g. [5,0,9,2,5,5,5] - return all the consecutive numbers that add up to N.
2. Swap the two values (int A=5 and int B=3), w/o using a 3rd attribute(so you cant use the 3rd attribute to store the value as a temporary storage).
So how do you implement workflow?
As above; it starts with a massive take home coding challenge. Basically you're given a very vague problem statement and a small amount of example data (carefully chosen to NOT cover any interesting edge cases), and must come up with an entire solution (design, implementation, API, test cases, code coverage, documentation, everything), all finished to the level you'd expect in production code (ie, full test coverage, edge cases thought about, errors handled, consistent method names, use a logging framework, everything). Don't be surprised if you fail due to something like "we told you we wanted logs, but we didn't tell you what would be consuming the logs, and you guessed wrong, so the formatting of the log messages isn't quite what we expected". Yes, it's THAT nit picky. And no, you can't ask questions during the process.
Given a set of components like A,B,C,D... And their ordered dependencies like A -> B,C B -> C C -> D find the dependencies for any given component "X".
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