These recordings are really useful. Does anyone know how representative these are from actual interviews? For example, for the interview question on finding pai

These recordings are really useful. Does anyone know how representative these are from actual interviews? For example, for the interview question on finding pairs in array that sum to k, the case where duplicate numbers in input array sum up to k is missed, and the interviewer didn't bring it up. Also, the space complexity of in-place quick sort is log(n), since the indices need to be kept in each call to sort subpartitions.