Dehivery Interview Experience 2019

Round 1:

Written round

  1. There was two ipl team having different height of players, find is it possible to arrange team in 2 rows so that 1st row player will have short height than second team, all player of  a team will be in same row.
  2. Client information  having clientId, creditScore and other info, Asked me to find a. maximum creditscore client, add some value in creditScore, creditScore corresponding to any client id, insert new client . It was written in declaimer that you cannot use hashmap so I solved with by BST.

Round 2:



  1. Vertical Traversal of tree
  2. Find all substring of any string
  3. Basic cache question
  4. There is bacteria who can move in all the direction in matrix and there is some box which is blocked(cant move) and a destination is given, Find minimum possible path from source to destination .I solved it with DP

Round 3:

  1. Design Recommendation system, I explained by keeping the probability and some ML approach he seems satisfied but later I got to know that he wasn’t able to understand that approach, he was expecting naive category approach.
  2. Project Discussion and some cross question
  3.  Rest Api, how will you optimise.
  4. Some Other question I don’t remember


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