SpaceX | Software Engineer (Junior/New Grad) | Coding | Onsite

You’re writing firmware for a door lock with a knock sensor. The owner unlocks it with a secret rhythm. The only hardware helper you have is: boolean listen(int timeoutMs) listen blocks for up to timeoutMs milliseconds. If a knock is detected in that window, it returns true immediately, at the moment of the knock. If no knock occurs, it waits the full timeoutMs and returns false. Each knock can only be heard once. Yo...