Amazon Interview Questions, all rounds


Round 1 (Telephonic) 
Q1. For a given number, find the next greatest number which is just greater than previous one and made up of same digits.
Q2. Find immediate ancestor of a given Node
Q3. Clone the linked list having an extra random pointer in nodes which is pointing random node in the list.


Round 2 (F2F) 
Q1 In a binary tree, a random pointer is given in each node. If this pointer pointing other than any successor of the node then set it as NULL. Otherwise let it remain untouched. Write code.
Q2. You will be given the number of pairs of parenthesis. Find out the total possible valid unique combinations and there should not be any duplicity. Write code


Round 3 (F2F) 
Project and some questions related to it.
Q1 Given an in-order traversal of a special binary tree having property that the node is always greater than its left and right child. Construct the tree and write code.
Q2 Find top 10 trending words inserted by users in sites like twitter. Only algorithm.
Q3 write an efficient code to find the first occurrence of 1 in a sorted binary array. (2 minutes only)


Round 4 (Telephonic) 
Q1. Remove duplicated from a string in O(n) without using hash.
Q2. Find the first occurrence of 1 in a sorted infinite binary tree.


Round 5 (F2F) 
Amazon has many visitors to its site. And it tracks what pages the customers visited, etc and other stuff.
Make an efficient data structure for storing 3 days of information of all those customers who have visited site exactly two different days and searched more than 3 unique pages of the site in those 2 days.
So whoever visited site exactly two days out of these three days and visited more then 3 unique pages should be in the contact list.
After final round got a regret mail after 3 days that I was Not selected.
 
This article is compiled by Ramendra.

Comments

  1. UnknownJune 1, 2018 at 4:04 AM

    Sain Bainuu,


    Thanks for highlighting this and indicating about #topic where more study and thought is necessary.



    If I buy a Route 53 domain name, can I create an email address and use it with gmail? If so, how?
    I do not want to use Workmail, or SES or an EC2 instance.
    All I want is a username, password, and SMTP and whatever else is needed to link my route 53 email to gmail.



    Very useful article, if I run into challenges along the way, I will share them here.


    Cheers,

    ReplyDelete

Post a Comment

Popular posts from this blog

C Graph implementation with adjacency list representation using structures: Data Structure Tutorial 1

Image
This is a quick tutorial for implementing graph data structure with adjacency list representation. Once I was  looking on the web to have a simple introductory tutorial on graphs, but unfortunately couldn’t find one  simple enough. So I decided to write this. In the adjacency list representation, è All the vertices are stored in an array of structure containing ‘data’ and ‘link’ fields. è The linked chains represent the edges of a vertex with its neighbors. In the figure, there are 6 vertices, represented by the array of length 6, and the chains represent the edges. Below is another example: Let us first define the structure of a vertex in a graph. struct vertex {     int vertexKey;     struct edge *edgePtr; }vertex; The vertexKey is the data field of the vertex, and edgePtr is the edge pointer, declared next. The graph can be declared as: struct vertex graph[10]; int vertexCount=0; Here, we are taking the maximum number of v
Read more

Interview Of An Indian Top Coder : Rudradev Basak

When I (Anil Kishore) started taking part in algorithmic programming contests, for more than two years, it was just me, lot of problems, very few algorithms, my ideas and my Java codes. With that, I would have probably been still a green rated coder, working for a software company in Bangalore after moving between two or three places, still in search of the right things to do. But why ? Problems, Algorithms, my Ideas and my Codes.. what else I need ? This is where many Indian coders make mistake. Almost two years after joining TopCoder (TC), I started interacting with fellow coders, knowing more about them, reading lots of others codes, being active in forums and part of the wonderful community. That was the crucial part of my career so far. TC has some interviews of foreign coders and they are very interesting to read. Knowing more about our own Indian coders will be more fun, especially for beginners to get inspired. This is the least I can contribute to the wonderful community tha
Read more

Roadies X Winner is Palak Johal!!

Image
Palak Johal, claimed the title of 10th season of famous MTV reality show Roadies, Battle For Glory. Palak, who proved himself the strongest contestant, defeated 15 contestants  and took home a cheque of Rs 4,50,000 and a Hero bike. The other Hero Roadies X Contestants of the finale were Raman Deep, Mohit and Anirudh. Palak- Winner of Roadies X The final  episode of Roadies X began with all the eliminated Roadies entering the location where they clashed with the final four. These four were the finalites: The two boys got eliminated in the rope task. So the ultimate battle was between Ramandeep and Palak. Too bad, isn't it.. most of us wanted Mohit or Anirudh to claim the title. So, the final battle concluded to between Ramandeep and Palak! And finally, Palak Claimed the title of Roadies X, battle for glory !!! Like always Raghu Ram, his twin brother Rajiv Laxman and Rannvijay were the judges. How did you like the 10th season
Read more