Bloomberg Software Developer interview questions

I applied online and few days later I got an email telling me scheduled a time for the 1st round phone call interview. Then I interviewed with one guy sounded nice and he throws me a question and I coded on codepair. We spent some time to clear the question and then I start to coding. He asked me the time complexity of some operations and also challenge me with a follow up question.

It was a phone interview. Someone would ask you to access a link, which was private for both of you. You would response his/her answer through the phone call. First few question were asking some data structure and time complexity question. Next would be coding question, you would need to type your code and explain to him through the link and phone.