Expedia Group Software Development Engineer-II interview questions

Started with an email from the hiring manager on a sunday night (weird already) saying he wanted to do a technical phone chat. This was before any sort of behavioral interview to make sure it was a good fit, keep in mind. That went well. My wife later interviewed with the VP of that group and chatted with the hiring manager for me who said that I was a great fit and was excited to move forward. I then get scheduled a technical screen with a Senior Developer. Most of the questions were very specific front-end questions that a quick Stack Overflow page would tell you what the answer was (see below). One data structure/algorithm question. I then don't hear anything for over a week. I ask the recruiter for a followup since I had two on-sites and wanted to expedite things. I am told that I was not strong enough for a Level 2 position. Funny thing is 1 hour after sending my message I get a job offer from Amazon for a level 2 position. So...

Easy and to the point. Discussed about the current project and focused on the basis of the computer science. HR was very active and got every thing sorted out quickly.