Amazon

An online assessment contained two coding questions, followed by a quick telephonic round. In the telephonic round, the question was to code a delivery system without any test cases provided. Participants had to identify edge cases.

First coding round: LeetCode medium/hard, 2 questions. Virtual onsite: 4 rounds total. - 1 system design - 1 logical coding - 2 LeetCode-type rounds The Bar Raiser round was difficult, with many leadership principles questions.

Data Structures * HashMaps / Dictionaries: insertion, deletion, lookup, counting frequencies. * Arrays & Strings: sliding window, two pointers, prefix sums. * Linked Lists, Trees, Graphs basics if asked. Algorithms * Sorting and searching. * Hash-