MathWorks Interview Question

In the second round, there were math puzzles, code debugging-type questions, and coding questions on two different languages, where the options were Matlab, Python, Java, C++, and Javascript. In the third round, there was the option of picking an expert in signal processing or control. I picked controls, and there were some questions about PID controllers. Also, there were questions about Matlab programming. Finally, the last round with the hiring manager was a behavioral interview.