Round 1 - It included questions on data structures and algorithms, arrays, trees, sorting concepts. Round 2 - It was based on basic Core Java Questions like Overloading, Collections, Design Pattern, Custom Objects, Types of Map, etc.

Genuinely one of the most unprofessional experiences I had. I got cold-called from a recruiter about the position midday. I randomly decided to answer. Recruiter didn't have the correct position (said Android dev) and I had to correct her that I was an iOS dev. She then went through basic initial questions (expected salary, location, etc). Extremely pushy whole way through. She asked me why I wanted to work for Walmart and she cut me off mid sentence. Then she said I would have an in-person interview at the office near my city, and that I would get an email the next day to schedule. Didn't get that - a scheduler contacted me to get times for a video interview. So I gave her times when I am available (I'm still working so I had to move stuff around to do this). Sent it in and waited a day - got a self scheduler as a reply. So w/e, I just click on the self scheduler to pick a time for my first interview and it says it's expired (I clicked it the same day after work, 6 hours after it came to me so idk why it would be expired). Then I sent a followup saying link is broken and gave them updated times in hopes that they could maybe just schedule the meeting manually. Nope, no reply back to me, they just sent another self scheduler email. And guess what? That link was also expired. Just got fed up by the rudeness and incompetence and told them I was no longer interested. Why would I want a position where the company has 0 respect for me or my time.