I had 3 rounds in OA

1. Coding Challenge – this timed section takes 90 minutes, work through two coding problems. on Hackerrank
2. Work Simulation – typically takes 15 minutes, work through system design problems faced by SDEs at Amazon.
3. Work Style Surveys – 2 surveys, typically takes 15 minutes, answer questions about how you approach your work.

Coding challenge

1. Medium - an array consists of -1 and 1s . Calaculate the maximum subsequnce where product is 1. - Solved
2. Medium - Dynamic programming question to find imbalance in a group of students. So basically we need to find imbalances in all possible subsets of a given array. Imbalance condition is simple but calculating subsets and finding imbalance in them was little hard for me.
   Solved 9/15 Test cases. Others were TLE

Work simulation was interesting round. It was like survey on decisions I would take on building a product

Work Style surveys was like knowing my individual behavior and me in a team environment.

Hoping for the best