First round was to implement a task using Google Doc. Second round was to simplify the abstract code using Google Doc. Third round was with a dev who asked to implement a function. Beware, requirements for coding styles, time, solutions are not quite adequate. And interviewer was tired of stupid candidates, was not fully polite and had pretty strange vision of how to code. For example, as he said, it must be considered as absolutely truth, any comments were not accepted and rejected. Comparison i >= size is wrong because i is incremented by 1, '>' is useless. So this code is considered as incorrect.