OLX Group interview experience Real time questions & tips from candidates to crack your interview
Software Engineer
OLX Group
2 rounds | 2 Coding
problems
Selected Interview preparation journey
Preparation
Duration: 6 months
Topics: OOPS , DBMS , Data structure , Operating System, Puzzles
Tip 1 : Practice the pattern printing coding question
Tip 2 : Practice the SQL query
Tip 3 : At least you should have one web development project
Application process
Where: Linkedin
Eligibility: No
Tip 1 : Must have projects in resume
Tip 2 : If you done some internship it would be plus point
Interview rounds
01
Round
Medium
Group Discussion
Duration60 minutes
Interview date8 Jul 2021
Coding problem0
There were around 15 people and they had given us a topic which was is Online education good or offline so we all were given 5 minutes each and one person was there to judge us.
02
Round
Medium
Face to Face
Duration40 minutes
Interview date16 Jul 2021
Coding problem2
There were two coding questions in this round
1. Minimum Number of Platforms
Moderate
30m average time
70% success
0/80
Asked in companies
You have been given two arrays, 'AT' and 'DT', representing the arrival and departure times of all trains that reach a railway station.
Your task is to find the minimum number of platforms required for the railway station so that no train needs to wait.
Note :
1. Every train will depart on the same day and the departure time will always be greater than the arrival time. For example, A train with arrival time 2240 and departure time 1930 is not possible.
2. Time will be given in 24H format and colons will be omitted for convenience. For example, 9:05AM will be given as "905", or 9:10PM will be given as "2110".
3. Also, there will be no leading zeroes in the given times. For example, 12:10AM will be given as “10” and not as “0010”.
Problem approach
Sort the arrival time and then compare this with departure time. And also maintaing if next arrival is less than departure then no need for extra platform and if it is less than then we need 1 extra platform.
2. Count Triplets
Easy
15m average time
85% success
0/40
Asked in companies
You have been given an integer ‘X’ and a non-decreasing sorted doubly linked list with distinct nodes.
Your task is to return the number of triplets in the list that sum up to the value ‘X’.
Problem approach
First sort the array then start from the starting index and for the rest of array using two pointer approach we can get the number of triplets
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
How do you remove whitespace from the start of a string?
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