Amazon Summer Intern interview questions

First question was to compare two lists and print the common elements. Simple question, but I wasn't explaining my idea. They are looking for your thought process. Regardless if your answer is right or wrong. they are checking if you can think in the right manner. I didn't talk much or explain and just wrote the code. BIG MISTAKE! The second question I had to make a dictionary, which was not too hard. I got stuck a couple of places and they helped me out. But try to keep them engaged as you write code. Explain what your thinking or the ways you want to do it.

How to deal with hash collisions?