Walmart Software Engineer Internship interview questions

The interview was held by a Karat company. A brief 5-minute introduction (tell me about yourself thing), followed by some theoretical questions. They give a choice of two topics for the theory that you feel the most comfortable with, each topic has three questions, and next is a live coding part.

I had to explain my solution to a CodeSignal assessment that I completed a few weeks prior. From there, I was required to complete another problem on CodeSignal, which is included below.