Video chat code challenge was not. It was to create a spiral loop over a N size matrix. It has no real-world use cases, and doesn't show nearly enough depth of your abilities. I have not once in 10years of coding, ever needed anything even close to this. I self taught myself coding and have worked for Google, CNN, etc. It was a purely computer science question. I think they are missing out on good and diverse talent because they only target CS grads.
1. What is the difference between a semaphore and a mutex?
android, binary trees
Format a string of numbers to display a currency - example" "1234.678" to "1,234.68"
1. Right view of a binary search tree 2. Java threads questions, Build your own concurrent hash map
What is the efficiency of searching in a sorted set or strings. Binary search
Do you remember esoteric graph algorithms from your college days?
I was typical SQL Interview question ,level was though .
Conference Room Scheduler - 8 conference rooms that can be reserved. make sure none are double booked.
Experience in a similar position, some SQL questions
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