Epic Software Engineer interview questions

First Round: A recruiter schedules a telephonic interview with one of the team members. Its a 30 minutes interview with focus on resume and work experience. I was given a scenario and had to say which data structure should be used and why. Some technical algorithm, data structure questions. Second Round: Coding Assessment Unlike others I had a 2 section test. First section was technical learning which had a new language and 20 questions based on it. Second section was programming where I had 4 questions. (Questions are given below) Before the test I had asked if there is a time limit and I was told no, but when I was doing my last question I got a pop up window saying, "you have last 15 minutes before this test ends". That was strange and surprising. I'm still waiting on the result of the test.