amazon interview
First, you should absolutely know your basics as a few others have already stated. But, the advantage to using these sites is that some of them, like HackerRank, could very well be the platform that's used during your interview since they are a HackerRank customer. If you're familiar with the platform and have a rough idea of the question formats, it could give you an edge over people who've not practiced on that platform before.
GeeksforGeeks is enough. Recently I cleared AMAZON interview (SDE-1) and all the questions are from Geeksforgeeks. and some CS fundamentals (OS,DS,DBMS,Networks).
Practice geeksforgeeks and write clear code on paper. you can practice on leetcode also for handling edge cases and various types of questions.
Topics you should focus -
- Tree traversals and other tree questions.
- simple linked list and array questions.
- BFS,DFS.
- some questions based on graph.
- Dynamic Programming.
- work on your coding skills, Try to write clear and simple codes which are syntactically correct and don't forget to handle all edge cases.
- Time complexity and space complexity of each algorithm, and they can ask proof of that algorithm.
- You have to give optimal solution and code for that.
- If you are applying off campus then there may be a design round so practice some basic design.
If you want to practice coding questions, the best site I've seen for this is InterviewBit. After that, you can read people's interview experiences on GeeksforGeeks.org and see questions recently asked at companies on Glassdoor.com or CareerCup.com.
Best resources that come to my mind are
Page on geeksforgeeks.org
Programming Interview Questions | CareerCup
Interview Guide - Amazon [E-Book]
I would give my honest answer - None of them.
Amazon would be having an algorithmic interview. The best way to prepare for that would be to open GeeksforGeeks and CareerCup. Open up the interview corner, you would find plethora of interview experiences for Amazon. Practice those question hard. GeeksforGeeks would be the best place to prepare for it. Go for it in a structured way, e.g. lets say do all array then link lists then trees. Be prepared to devote each and every single amount of your time to this one purpose. I would wish you All the Best. Cheers!!. :)
P.S. I don't want to say that sites you mentioned are useless but these sites are more of a competitive programming practice platform, hence would help out less effective way for Amazon in 3 months of time.
Just start doing these sets:
Amazon Archives - GeeksforGeeks
I have done that and cleared the Internship Interview of Amazon.
http://oj.Leetcode.com
It has exactly the type of questions that Amazon asks.
Its not about the website you should follow but the types of questions you should do.
Every Online judge is somewhat similar to each other. Practice data structures questions from geeksforgeeks and career cup , use spoj and codechef for practice of AdHoc problems and give as much time as you can , you'll succeed definitely . :)
Sites that go over basic computer science algorithms and data structures. I interviewed with them and it was mostly data structures and algorithm type questions. Know about hashmaps and binary trees and traversing through trees, and graphs, and other stuff related to a grad level course on said topic.
Participate in this coding challenge & stand a chance.
Amazon Developer Hiring Challenge | Developer jobs in April, 2016 on HackerEarth
None of the above.
Forums likes of geeksforgeeks, careercup, glassdoor and few more would be better suited for interviews.
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