Capital One Software Engineer(Internship) interview questions

I applied online through Workday, and I received an invite to interview within a week on their "Power Day" (I think it just means that it's their final interview, I'm not really sure). The one final interview consisted of 3 interviews in a row: technical, behavioral, and case. Case is definitely the hardest one (because it requires background business and company knowledge), but I think they understand that many SWE interns never have had exposure to this so they must've went easy on me.

Three one hour interviews back to back, one behavioral, one case study, one coding challenge. Coding challenge asked me to design an LRU cache and process an array to find a missing element.