I gave Amazon OA today on Hackerrank platform. There were two questions to be done in 105 minutes followed by a work-performance evaluation. Could be related to Amazon leadership principles.
1. Min cost to join ropes of given lengths (https://www.geeksforgeeks.org/connect-n-ropes-minimum-cost/)
2. Similar to BFS in a matrix.
3. Coding approach and Time complexity discussion for (1)
4. Coding approach and Time complexity discussion for (2)