The guy was a foreigner. He was kind of a dictator. He gave such a simple question related to moving zeroes to end of array. When I gave him the solution immediately and coded it.

Then he started throwing me off. asking me why do we need testing? when I tried to answer him, he seemed unsatisfied with whatever I said. Then he told the answer that we do testing to increase our confidence and I knew that this was the stupidest interview I have ever attended.