I applied online. I interviewed at Amazon (Saint Louis, MO) in Aug 2021
Interview
This is a written round on paper for everyone. Three coding-related jobs were assigned. To move on to the next round, two of the three must be correct and manage every single edge case. Only the best choice was to be considered. You've given an N-dimensional array (ARR) made entirely of numbers. You must find the subarray total that has the greatest sum among all subarrays. (including empty subarrays). A subarray is the continuous portion of an array. In other words, an array can be subdivided by removing 0 or more numbers from the start and 0 or more integers from the end. Connect n ropes for the least amount of money: You have been handed 'N' ropes of varying lengths; we need to connect these ropes into one rope. The expense of connecting two ropes is the sum of their lengths. We need to join the ropes as cheaply as possible. The test data is structured in such a way that the output will fit into a 32-bit integer. Given a binary tree, view it from the left. Print the tree's left side.
Interview questions [1]
Question 1
Q: Time Complexity and Space Complexity Q: Coding problem solution Q: API development Q: Technology related questions
Surprisingly easy — I expected tougher questions, but the coding round felt more like a warm-up. The main challenge was a DSA problem about counting islands in a 2D grid, which led to a discussion on DFS versus BFS and handling large grids. Funny enough, I had revisited that exact type of question while prepping on PracHub, which made me feel more confident. The interview wrapped up with a behavioral round, and I accepted an offer, but ultimately decided to decline it for another opportunity. Overall, it was a smooth experience.
Interview questions [1]
Question 1
Number of Islands — given a 2D grid of '1's (land) and '0's (water), count the number of connected islands. Walk through DFS vs BFS, and discuss how to avoid revisiting cells (in-place mutation vs visited set) and what changes if the grid is huge and must stream from disk.
It started with an OA, and then after a few weeks, I got invited to four rounds of interviews: technical and behavioral at 3 of the 4, and behavioral only at one.
Um teste de código online, se aprovado, vai para o loop. O loop é 4 entrevistas seguidas, duas em inglês e duas em português. 3 entrevistas técnicas de código, todas as 4 têm pergunta de liderança.
Interview questions [1]
Question 1
Pergunta historicas baseada nos principios de lideranca da amazon.