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OLX Groups Interview Experience (On-Campus)

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  • Last Updated : 29 Nov, 2021

Online Test(Written): First round was online test, consisting of 10 MCQ (Aptitude, turnaround time calculation from OS, to SQL query output, C++ output) questions and 2 Coding questions. 

Coding Questions:

  • Activate Fountain:- The problem statement was like you have been given an array where each element is having a special property, the array indexing is from 1, where index number represents the fountain number and the range corresponding to each fountain is max(i-arr[i], 1) to min(i+arr[i], size of array); you have to find the minimum number of fountains required to completely water the field.(Field:- range of field is 1 to n(size of the array)). 
  • Target sum Pair:-Given an integer array and a positive integer k, count all distinct pairs with sum equal to k. 

35  out of 450 students went to next round. 

Technical Round 1: I was asked to introduce myself. Then my resume was properly read and key strength were underlined. I was expected to explain every aspect of my project. He was continuously asking technical questions regarding each project. One of my project consisted implementation of Single Sign On using SAML. I was asked to draw basic architecture of the same. Additionally, I was asked following questions 

  1. https://www.geeksforgeeks.org/find-next-greater-number-set-digits/ 
    Just explain your algorithm.
  2. https://www.geeksforgeeks.org/level-order-traversal-in-spiral-form/  
    Write the full code .

Was asked to explain Inner join and Left Join. Was asked a trick question on left join. 
Next I asked some company-related questions. Tech 1 done 

Technical Round 2:  Again i was asked  asked about my resume. He asked what are you doing recently. I told i was learning to write APIs .He saw i made a website from scratch, opened my website and asked me to recreate the ” Contact Us ”  page . All basic aspects 
 

  • An html form for posting the data in database
  • The basic structure of database in while data shall be stored .
  • GET and POST API code .

All this were supposed to be written on paper. I did all. 

7 went to next round. 

HR Round:   My introduction, since this was HR, I added my works as a Technical Advisor and Core member of  CodeChef and NGO. He asked me tell unusual uses of a BRICK. Then he explained salary breakup and work environment. 
6 were given Full time plus internships.

My Personal Notes arrow_drop_up
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