The first half is largely pattern recognition (e.g. something like 'guess the next number: 1, 4, 4, 7, 28, 10, 280, 13' except more complicated). The second half is more just rapid fire calculations, "calculate how much interest is paid on this load in x years" type stuff. There's enough time to do them out by hand but unless there are two very similar options, you're best off estimating which choice is best
What is the single achievement you are most proud of?
Typical behavioral questions during the onsite interview with the recruiter. Numerical sequences and linear algebra in online test
What do you like more frontend or backend?
What are your hobbies ?
What project are you most proud of ?
both were string manupulation questions
Graph algorithms, system design, designing data structures
I signed an NDA, but there were a number of recursion and graph-based problems.
The second question was a bit confusing. Suppose you have a facebook API, which allows you to access all one's friends. Can you find if B is connect to A through friend's network? say A has friends (C,D,E) and C has friends(B,G). Now A is connected to B. I did the second one with a 7 layer for loop first, 'cause I was avoiding overloading the memory with too much data. However, the interviewer seems not to appreciate that. But I did answer the following up question wrong. He asked what is the big O for my code. A map search is N(nodes)+V(edge). I did not know that, I gave a answer of N, which is close but not correct.
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