I applied through a recruiter. I interviewed at Amazon
Interview
First, there was an online coding question, which was not easy.
Then there was an onsite interview. Generally simple questions over 4 technical rounds.
Questions:
1 Print all the elements in an array that have occurred an odd number of times
2 Design a Chess game
3 Design a Parking Lot
4 Given an array of stock prices, where the increasing indexes of the array signify the increase in time. Return a good time to buy and sell such that profit is maximized.
5. Given a Linked List, split this linked list into 2 lists such that one list contains only odd numbers and the other one contains only even numbers
6. Find the square root of a number. Optimize.
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.
