IXL Learning Software Engineer Intern interview questions

Online assessment consisting of 4 algorithmic questions that had to be solved in 90 minutes. The first question tripped me up a little, and affected the rest of my peformance.

After giving a recruiter my resume at a career fair at my university, they sent me an e-mail about two weeks later with a short coding skills test and gave me three days to complete it. After I sent it back, they got back to me within two days to set up a phone interview. I spoke to one of their engineers, who ran me through 3-4 verbal coding challenges (i.e. "How would you program this", with my answers coming as a hybrid of overall strategy and pseudocode). After I answered his questions, he asked briefly about the projects I had listed on my resume, then he asked if I had any questions for him about IXL. I answered all the coding questions and thought I did relatively well, but I got a final e-mail three days later informing me I was not going to receive an offer.