Electronic Arts Senior Software Engineer interview questions

I was contacted on the telephone by the HR and programmed for and online interview. I had 30 minutes for 2 problems: 1. An inoder traversal of a binary search tree 2. Given 2 rectangles intersecting or overlapping together in any corner, how do I determine the total area for the two rectangles without the overlapped (intersection) area? After the online test I went for a onsite talk. First I had a small chat with the HR lady that questioned me about my current job, my plans, and my salary expectations. Second a technical interview, some of the questions were: 1. hardest bug you ever ecnountered 2. OO concepts (inheritance) 3. nullify an integer in c++ using just while and increment operators. Last I had a chat with 2 managers about my work experience and they presented the company culture etc.