Amazon interview experience Real time questions & tips from candidates to crack your interview
SDE - Intern
Amazon
2 rounds | 3 Coding
problems
Selected Interview preparation journey
Journey
Getting into an MNC was my dream from the very start. I always planned my coding journey in a way that I could finally target those FAANG companies in the end. I learned from my seniors that a strong hold of DSA is the ultimate key to getting into these companies. So, I practiced it regularly from the first year.
Application story
Amazon visited my campus for the placement process. We just had to upload our resumes and fill in all the details in the form. After the online test, around 17 candidates were selected for interviews.
Why selected/rejected for the role?
I was able to clear all the rounds. I think it was because I answered almost all the questions correctly, gave quick responses, had good projects listed on my resume, and had some knowledge about the company. I was able to impress the interviewer.
Preparation
Duration: 4 months
Topics: Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic Programming
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio,etc.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Application process
Where: Campus
Eligibility: Above 7 CGPA
Tip 1: Have at least two good projects mentioned in your resume with a link.
Tip 2: Focus on skills, internships, projects, and experiences.
Tip 3: Make it simple, crisp, and one page.
Interview rounds
01
Round
Medium
Online Coding Test
Duration60 mins
Interview date19 Nov 2022
Coding problem2
This was technical round in which they gave me two coding questions which need to be solved in one hour.
1. Longest Bitonic Sequence
Moderate
15m average time
85% success
0/80
Asked in companies
A Bitonic Sequence is a sequence of numbers that is first strictly increasing and then strictly decreasing.
A strictly ascending order sequence is also considered bitonic, with the decreasing part as empty, and same for a strictly descending order sequence.
For example, the sequences [1, 3, 5, 3, 2], [1, 2, 3, 4] are bitonic, whereas the sequences [5, 4, 1, 4, 5] and [1, 2, 2, 3] are not.
You are given an array 'arr' consisting of 'n' positive integers.
Find the length of the longest bitonic subsequence of 'arr'.
Example :
Input: 'arr' = [1, 2, 1, 2, 1]
Output: 3
Explanation: The longest bitonic subsequence for this array will be [1, 2, 1]. Please note that [1, 2, 2, 1] is not a valid bitonic subsequence, because the consecutive 2's are neither strictly increasing, nor strictly decreasing.
Problem approach
n^2 Solutions were acceptable here, so I checked all elements as the peak point, found the length of such sequences for all elements in the array, and took the maximum of them as the answer.
2. Distance between two nodes of a Tree
Moderate
25m average time
60% success
0/80
Asked in companies
Given a binary tree and the value of two nodes, find the distance between the given two nodes of the Binary Tree.
Distance between two nodes is defined as the minimum number of edges in the path from one node to another.
Problem approach
I have done this question many times. So, I had remembered this.
02
Round
Medium
Face to Face
Duration60 mins
Interview date24 Nov 2022
Coding problem1
1. Technical Questions
Problem approach
I explained all the questions. I implemented a linked list and explained how we use each of them in the real world.
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
How do you remove whitespace from the start of a string?
Choose another skill to practice
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