JPMorganChase Software Engineer(Internship) interview questions

24 hour Code-For-Good hackathon at JPMorgan. JPM invites a couple of non-profit companies that will present a problem they are facing. You will be placed with a group of people to come up with a tech solution in 24 hours.

I applied online and received an email to set up an interview. It was split up into two parts, behavioral and technical. They asked basic interview questions and the technical question wasn't very difficult. It was on hashmaps and rearranging a string