I have two questions on this topic.\n\n1. How common are design pattern questions for SDE1 at Amazon?\n\n2. In OOP questions, what is usually the expection in terms of what areas to cover. For eg., I have seen two resources\n\t- Cracking the coding interviews by Gayle McDowell - which covers thorough class design and its functions but all the solutions are mostly customer side and minimum to no solution on the admin side; also there are no class diagrams\n\t- Grokking the OOD interviews by educative.io on the other hand covers complete design - customer + admin facing, class diagrams, brief implementation of classes.\nAssuming most of the OOD interviews range from 30-45 minutes, what is the soft spot for which areas to cover for these interviews?

I have two questions on this topic.\n\n1. How common are design pattern questions for SDE1 at Amazon?\n\n2. In OOP questions, what is usually the expection in t