Bloomberg Financial Software Engineer Intern interview questions

Talked to Bloomberg at University technical job fair, the recruiter liked me and asked me to come in for an interview later. First round consisted of 2 on 1 interview, fully technical. N people seated at a round table. Remove every Kth person, until only one remains (code solution). Populate the siblings of children in a tree. Second round was with team leader. Logic based questions, and questions on STL, more problems, and questions about my experiences in the past. Asked to come in the next day as well for 2 other interviews, one with HR, and the final with another senior developer in R&D. One technical question on a current problem they were facing, why bloomberg, talked about salary and details. Recieved offer immediately after that round.