Amazon SDE-1 interview questions

The interview had 3 rounds. Questions on min heaps, binary tree and graphs were asked along with Search algorithms and they were somewhat on the difficult side. You just need to have a in depth understanding of how all these things work

2 dsa questions and lp questions(BIAS FOR ACTION. Tell me about yourself DSA-1 Rotten oranges (leetcode med) DSA-2 min no. of railway platform.(leetcode med) optimize the approach. Tell me a situation where you don't have exact roadmap and you learn everything on the way.