UBS interview questions

I had strong core java resume with multi threading and the position i was applying demanded the same. Phone interview was the typical set of questions - - Implementation of HashMap - concepts of Heaps and Stacks - SingleTon Pattern and decorator pattern - basic threading concepts The face to face round was a two round interview . The first round was a rapid fire round - both on technicals - - steps to publish messages to a JMS - steps to execute a sql statement - was made to implement a linkedList DS. Second round was by a different person, more on the slower lines. I was asked to implement ReadWriteLocks using pre java 5 knowledge. I never had seen the implementation earlier. The interviewer was patient and with a couple of hints , i managed to write code for it eventhough i have taken some 10 - 15 mins for that THe next was - Given a binary tree, i was asked to check if its ordered or not. By now, i was completely exhausted ( i travelled all the way from Jersey city to stamford and taken a telephonic interview of another company on the way) and entered into a deadlock state. Interviewer tried to hint me , but of no avail. Later i was sent back without any hint. 4 days later, i get a call from my staffing agency, that they want me onboard.

Quick phone interview by 2 first year analysts covering interest and a walkthough of common valuation methods. The interview felt rushed and vaguely unprofessional since it was not handled by HR. The interviewers seemed more intent on affirming weaknesses rather than evaluating strengths. Overall, it felt that they were more interested in dissuading in further efforts by both parties.