About me - Tier 1 college , Non-CS background, 1 year of exp
I applied to wallmart through a referal from a friend. I was contacted by the recruiters a week later.

First Round -

Que - Given an array of integers, shift all the zeros to the right.
Que - Given a list of strings, find the longest common prefix.

Was able to solve both the que then we had a discussion on my past exp and projects.
Java concepts / OOPs/SQL.

Second Round -

Que - Design an LRU Cache .

He asked me to explain the approach and then implement it. After that we had a deep discussion on my past projects.

Third Round -

Que - Design URL shortner and some behavioral questions

Result -

All the rounds went great. I was asked to submit my docs for further process but a week later they told me that the position I was applying for is already filled. My feedbacks were good but they were looking for more than 3 years of experience. Disappointed, but thats life.