There were two phone screenings.

The first person was okay. The second candidate had a heavy Chinese accent, and I could barely understand a word. They also seemed rather rude, even though I had found the solution.

HR was a mess. For the first attempt to set up the phone screening, the coordinator was supposed to confirm the date and time but instead "went out of town." She apologized and eventually set up both interviews. However, after the second interview, they decided to ignore me. I haven't heard from them in over seven days, so I turned them down.

Very unprofessional; I would not recommend applying for any job there.

Implement a stack using a queue.

Now, implement a queue using a stack.

You have an unsorted list of consecutive integers. One of them is missing; find it.

Write test cases for it.