Amazon Wow Interview Expertise for SDE Internship 2022

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I utilized for the Amazon WOW SDE internship in June 2022. (for 2023 passports) There was a complete of two on-line coding rounds, and 1 technical interview.

On-line Spherical 1: (July 2022): Platform: Mettl. It was 90 minutes – 40 MCQs (5 questions from every subject – OS, DBMS, pseudo code, Linux, Software program engineering, Software program Testing,..) and 1 coding query.

On-line Spherical 2: (August 2022): Platform: Hackerrank

I acquired mail that I’ve cleared the primary on-line spherical and the subsequent step is to register on the Amazon jobs web site. Then hyperlink to 2nd on-line spherical will likely be given there. This spherical has 2 coding questions for 45 minutes. 

Technical Interview: (September 2022.)

  • There was just one spherical and I attended it within the Amazon workplace.
  • The interview lasted for round 1 hour and I would like to resolve 2 coding questions. 

1st coding query: (on strings)

https://www.geeksforgeeks.org/reduce-the-string-by-removing-k-consecutive-identical-characters/

  • First I instructed the brute power strategy after which the interviewer requested me to optimize it. 
  • I gave him the answer utilizing stack, and I used to be requested to put in writing the code on paper. 
  • Then for the second query, he requested me whether or not I’m comfy with Timber. I stated YES, however I used to be truly not.
  • He gave me the query: https://www.geeksforgeeks.org/find-duplicate-subtrees/

I couldn’t clear up it, so he modified the query.

2nd coding query: Then he modified the query to Discover the variety of permutations of a given sample in a given string.

My strategy was:

  • Retailer the frequency of every character within the sample on a map.
  • Traverse the string, just like the sliding window method, and retailer the frequency of every substring of the sample’s size.
  • Examine the frequencies and if it matches, enhance the depend of outcomes.
  • Replace the frequency of the substring for each window.

The interviewer was fairly impressed with my resolution and I used to be requested to put in writing the code for it. We had a small dialogue on my tasks and likewise his expertise at Amazon.

End result: SELECTED (Obtained mail after per week)

Ideas: 

  • The one factor issues for this interview is coding questions, nothing else.
  • Don’t strive to think about the most effective strategy, at first, simply inform out loud no matter strategy you get.
  • Inform them if you’re caught and they’re going to allow you to. 
  • Suppose earlier than you say that you’re assured in any subject.
  • Necessary: Undergo GFG interview experiences as many as doable. This can allow you to very a lot for any firm interview.

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