Ho presentato la mia candidatura tramite un selezionatore. La procedura ha richiesto 2 settimane. Ho sostenuto un colloquio presso Amazon (Hyderabad) nel mese di dic 2012
Colloquio
Recruiter had short-listed my profile from one of the job portals and contacted me to schedule an online coding test on interviewstreet.
The questions were:
1. Find all prime numbers before the given number n.
2. Find the kth largest number in a BST
3. Find the transpose of a given matrix.
4. Given a directory with several different files. Find the student with max avearge number.
one more, which I dont remember.
Time given was 2 hrs.
After going through, had the first telephonic round.
Questions asked were:
1. Find the missing card in a deck. The cards are passed as a stream of input.
2. Find the median of 2 sorted arrays.
3. Construct a tree from the post and preorder traversals. [Asked to mail the code for the same within 15-20 mins.]
I messed up and hence within a week got a regret mail, but the experience helped me in identifying my areas of improvement.
Domande di colloquio [1]
Domanda 1
Find the missing card:
I gave an O(n) space approach using hashtables, but he wanted a much better optimized solution, after some thinking thought of using only required bits or using the cards as an A.P., however these thoughts came after the interview.
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.
Domande di colloquio [1]
Domanda 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.
Ho presentato la mia candidatura online. Ho sostenuto un colloquio presso Amazon (Calgary, AB) nel mese di giu 2026
Colloquio
Online Assessment is the first step in the process. I didn’t have an HR phone screening and went straight to the OA after applying. It was sent to me about a week after I submitted my application.
Domande di colloquio [1]
Domanda 1
The first question is LeetCode style algorithms question, and the second question gives a full stack repo (choice of Java, NodeJS, or Django) and asks to solve a backend issue which is causing a bug in the frontend. Unit tests must pass to pass the second question. You can run both backend/frontend indivdually or together
