I met a recruiter at an on-campus event and was told to apply online for the summer internship program.

A week later, I had a phone interview with two team members. This consisted of basic resume overview questions and a single technical question.

A week later, I had another Teams interview with four team members. This consisted of a few behavioral questions and a practical coding problem.

A week later, I was asked to complete a form summarizing my technical experiences.

A month later (after dead silence and multiple follow-up emails), I received a phone call at 8 pm on a Friday with a job offer for a summer internship. I signed the offer immediately, and they confirmed my signature immediately.

A month later (after dead silence and multiple follow-up emails), I received an email stating that the summer internship was "no longer available" and they asked me to do a spring internship instead. I declined.

Given a list of 99 numbers, determine which number (1-100) is missing.

Write pseudocode for a program that manages communication between a physical button and a countdown timer.