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Amazon Student Intern Interview Questions and Answers
Amazon Student Intern Interview Experiences
3 interviews found
Anonymous
Selected
I applied via Company Website and was interviewed in Jan 2024. There was 1 interview round.
(4 Questions)
- Q1. What round question
- Q2. What is my name
- Q3. What is my father name
- Q4. What is my mother name
Interview Preparation Tips
Samridhi Naithani
I applied via Campus Placement and was interviewed in Dec 2023. There was 1 interview round.
(1 Question)
- Q1. Find loop in a linklist
- Ans.
To find a loop in a linked list, use Floyd's Cycle Detection Algorithm.
Use two pointers, slow and fast, to traverse the linked list.
If there is a loop, the fast pointer will eventually meet the slow pointer.
Once they meet, move one pointer back to the head and start moving both pointers one node at a time until they meet again.
Skills evaluated in this interview
I applied via Job Fair and was interviewed in Mar 2022. There was 1 interview round.
(3 Questions)
- Q1. Reversed a linked list
- Ans.
Reversing a linked list involves changing the direction of the pointers in the list.
Iteratively swap the next and previous pointers of each node in the list
Recursively reverse the rest of the list and then change the next pointer of the current node
Use a stack to push each node onto the stack and then pop them off to create the reversed list
- Q2. MinStack, implement a stack with o(1) to get the min value
- Ans.
Implement a stack with O(1) to get the min value.
Use two stacks, one for the actual values and one for the minimum values
Push the new value onto the value stack and compare it with the top of the minimum stack
If it's smaller or equal, push it onto the minimum stack as well
When popping a value, check if it's the minimum and pop from the minimum stack if so
- Q3. Implement array with o(1) setAll, set all the array to this value in o(1)
- Ans.
Implement array with O(1) setAll to set all values to a given value.
Create an array of strings with a fixed size.
Create a variable to store the value to be set.
When setAll is called, assign the value to the variable.
When accessing any element of the array, return the value stored in the variable.
This approach ensures that all elements of the array are set to the same value in constant time.
Interview Preparation Tips
Skills evaluated in this interview
Interview questions from similar companies
I applied via Naukri.com and was interviewed before Nov 2020. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. Basic Questions about core concept.
Interview Preparation Tips
What people are saying about Amazon
Interview Preparation Tips
Tips: Just try coding as much as you can in the four years of graduation.
Round: Interview
Experience: Three Coding Interview and a Behavioral Interview were conducted.
Tips: Try to get some prior knowledge about the company's infrastructure.w
General Tips: Practice as much problems as you can online or offline.
Skill Tips: Coding is the key for any software company.
Skills: Coding
College Name: IIT KHARAGPUR
Motivation: Its the best in business
Interview Questionnaire
4 Questions
- Q1. You are given a large array of n bits. Each bit is initially 0. You perform several operations of the type
- Ans.
Solution to performing operations on a large array of bits.
Use bitwise operators to perform operations on individual bits
Use a loop to iterate through the array and perform the operations
Ensure that the array is large enough to accommodate all the bits
Consider using a data structure like a bitset for efficient bit manipulation
- Q2. Questions on Network programming
- Q3. Questions on array,heap and binary trees
- Q4. Round was both HR+Technical
Interview Preparation Tips
Experience: Questions can be found here:
-----/
Tips: Try to solve all 3.
Duration: 60 minutes
Total Questions: 3
Round: Technical Interview
Experience: First discuss the solution and then paper-code it.
Tips: Try to code without mistakes.
Round: Technical Interview
Experience: First, I was asked to discuss my project based on networking and then I was given a question on network programming
Tips: Pay attention on discussion
Round: Technical Interview
Experience: Provide the optimised solution and code it without any mistakes.
Round: HR Interview
Experience: Why linkedin?
What changes will you make in 6 months?
Internship project: Discussion and lot of common questions on that.
Basic Questions of C++ and Java
Skills: Data Structure, Core courses understanding, Algorithms
College Name: IIT GUWHATI
Skills evaluated in this interview
Interview Preparation Tips
Experience: In the coding round there were 3 questions to be solved in about 3 hrs.
Round: HR Interview
Experience: Expect the usual crazy questions like "Why LinkedIn?" and if you are already placed, be ready to give a proper justification for "Why LinkedIn and not XYZ?" so on. Be cool, you need not be accurate. Be well prepared with your resume and expect questions from them.
Tips: For the interview, just be confident and have a good resume ready with you.
Round: Other Interview
Experience: Coding Interview:
Simple coding questions. Make sure you first explain the logic to them and then you may be asked to write the code for it on the board using any language of your choice. Syntax is not a big deal, but don't make any logical errors. They are very friendly and may suggest certain solutions of their own. Make sure you can grasp them quickly. Find faults in your own code before they find it. Always try to give the best optimal solution. In case you are unable to do so then suggest possible improvements.
Round: Other Interview
Experience: Design Interview:
Some people may find this round a bit uneasy. But this round tests how good you are at designing solutions to problems. Most of the candidates were asked to build an online gaming system. And then they keep adding extra constraints and ideas and see if you can integrate them to your design. Database knowledge may be tested. They may also ask questions pertaining to you projects listed in your resume.
General Tips: An updated LinkedIn account with decent connections. ;)
Skill Tips: Be very strong with your coding ability. Whenever you code, do follow some standard procedures and make the code look simple and structured. Whenever you solve a coding question make sure you answer it completely for all the test cases. Partial results will only indicate that there is something wrong with the logic. Try to solve a complete question rather than multiple questions with partial results.
College Name: NIT SURATHKAL
Interview Preparation Tips
College Name: NIT SURATHKAL
Interview Questionnaire
3 Questions
- Q1. Some question on KMP
- Q2. Simulation Question
- Q3. Topological Sort Question
Interview Preparation Tips
Experience: Simple
Tips: Online Coding Questions
Duration: 60 minutes
Round: Technical Interview
Experience: Moderately difficult
Tips: Thorough understanding of all the algorithms is required.
Round: Technical Interview
Experience: Easy
Tips: Need to start a question afresh without attacking it the way you have solved questions in the past
Round: Technical Interview
Experience: Easy/moderately difficult
Tips: The idea was not that easy to click.
Skills: Coding
College Name: IIT BOMBAY
Motivation: Facebook has revolutionised social networking.
I applied via Campus Placement and was interviewed in Dec 2016. There were 4 interview rounds.
Interview Questionnaire
4 Questions
- Q1. Given a 2d matrix with some D doors and W walls, we need fill distance matrix with minimum distance to the nearest door
- Ans.
Given a 2D matrix with doors and walls, fill distance matrix with minimum distance to the nearest door.
Iterate through the matrix and find the doors
Use Breadth-First Search (BFS) to calculate the minimum distance from each cell to the nearest door
Update the distance matrix with the minimum distances
- Q2. Given a read-only array we want to find kth smallest element in unordered array with O(1) space
- Ans.
Find kth smallest element in unordered array with O(1) space
Use the QuickSelect algorithm to partition the array and find the kth smallest element
Choose a pivot element and partition the array into two subarrays
Recursively partition the subarray that contains the kth smallest element
Repeat until the pivot element is the kth smallest element
Time complexity: O(n) average case, O(n^2) worst case
- Q3. Design question
- Q4. Find friends of friend who already are not friends with you
- Ans.
To find friends of friends who are not already friends with you, we can first find your friends and then their friends excluding yourself and your friends.
Get your list of friends
For each friend, get their list of friends
Exclude yourself and your friends from the final list of friends of friends
Interview Preparation Tips
Experience: It started with an informal talk after he gave his introduction. We talked about the cyclone that was going to be there and what I did in my internship and my previous projects. Then we moved to questions. After solving both questions he asked if I had questions.
Tips: Just walk the interviewer through the solution you're proposing.
Round: Other Interview
Experience: He started with a design question with how to stream an image such that all clients see the same image at the same time. You need to take care of delays, network problems. He kept on adding new elements like compression, streaming, utc time related issues, client rendering delays and so on.
Round: Other Interview
Experience: This was bar-raiser round.
Skills: Design, Algorithms And Data Structures, Graph Theory
College Name: IIT Madras
Skills evaluated in this interview
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