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Microsoft Interview Experience (On-campus internship)

  • Difficulty Level : Medium
  • Last Updated : 20 Dec, 2018

Online round:

It was conducted on Cocubes. It consisted of 3 questions:

  1. 2 marks:Average of ascii characters of string.
  2. 3 marks:Reverse alternate k nodes
  3. 5 marks:Cousin sum in a binary tree.

Other questions were:

  1. Infix evaluation
  2. Given an array of numbers, find the smallest number after n deletions
  3. Next palindrome.

    Of 200 students about 60 were selected for next pen and paper round.We had one ds question detect and remove loop from a linked list and 6 short questions based on C.

    At the end of each round I was asked the question “Do you have any question for me?”.

Round 1:

    First I had to explain my approach, then write the entire code and test cases for each problem.

  1. Reverse a sentence.

    Input:”This is a test”

    Output:”test a is This”

  2. Reverse the sentence preserving whitespaces.

    Input:”This is   a    test”

    Output:”test a   is    This”

  3. Identify whether given nodes of a binary tree are directly connected or not.


    2                true

    5, 4             false

    5, 4, 9          true

Round 2:

  • There are two types of characters one of 1 byte and another of 2 bytes, I had to delete the last character.
  • Design a remote just like  keypad of old phones, and display all corresponding channels in TV.












    And we have to display channels with output as prefix.

    Round 3:

      First I was asked “Tell me about yourself.”

      then “What I wanted to do in life?”

      and 2 coding questions, just logic no implementation.

    1. Popultate right pointer in a binary tree.
    2. Given a file print all the anagrams together.

    Finally, I was selected.It was one of the best moments of my life.

    Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more, please refer Complete Interview Preparation Course. In case you are prepared, test your skills using TCS, Wipro, Amazon. GoogleE-Litmus and Microsoft Test Serieses.

    My Personal Notes arrow_drop_up
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