Amazon Software Development Engineer (SDE) interview questions

Tree structure to implement the level of people in a firm.

Round 1: Easy Graph application problem, Optimise it using DP, further optimise space by removing unnecessary data. Easy Data Structures problem using hashmap and a counter. Round 2: Find the kth the smallest element in an array. Binary Search tree problem(GFG medium level) Round 3: RU Cache Implementation Round 4: Implement Hashmap with a function that returns the order of insertion of <key, value> pairs into it