Bloomberg Software Engineering interview questions

First, I submitted my application which went through a resume review. After, it was a 1-hour coding phone interview. The phone interview consisted of one main question that was coded for 30 minutes.

One phone call that involved an employee asking me a coding question. To get this interview, I submitted my resume online and heard back from them within 2-3 weeks. The coding question was challenging for me but I should have done more preparation.