Cars24 Services Private Limited interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
Cars24 Services Private Limited
2 rounds | 4 Coding
problems
Rejected
Interview preparation journey
Preparation
Duration: 3 months
Topics: Data structures, algorithms, OOPS, Dynamic programming, SQL.
Tip 1 : Practice popular questions from Arrays, Binary Trees, LinkedLists from CodeStudio's Interview Problems
Tip 2 : Make sure you are aware of calculating the time and space complexity for every problem you're coding.
Tip 3 : Prepare through Mock Interviews to practice explaining your approach while solving in an actual interview.
Application process
Where: Campus
Eligibility: Above 7 CGPA
Tip 1 : Describe best of your projects in minimum words. Don't forget to add buzz words like REST APIs/ DB Indexing/ Benchmarking etc if you worked on backend.
Tip 2 : Don't add school achievements like Olympiads or Class Topper in your resume.
Tip 3 : If you've some work experience, put it in a way ,you're marketing yourself. Add terms like 'Created/Owned the Project through entire SDLC'
Tip 4 : Make sure you mention how your work experience actually impacted the company. Or how your self project can be actually useful to end user.
Interview rounds
01
Round
Easy
Face to Face
Duration45 minutes
Interview date20 Jan 2021
Coding problem2
1. Right View
Moderate
35m average time
65% success
0/80
Asked in companies
You have been given a Binary Tree of integers.
Your task is to print the Right view of it.
The right view of a Binary Tree is a set of nodes visible when the tree is viewed from the Right side and the nodes are printed from top to bottom order.
Problem approach
You have been given a Binary Tree of integers.
Your task is to print the Right view of it.
The right view of a Binary Tree is a set of nodes visible when the tree is viewed from the Right side and the nodes are printed from top to bottom order.
2. Operating System Questions
What is semaphores and its type?
What problem semaphores solve?
What is Threading?
Problem approach
In computer science, a semaphore is a variable or abstract data type used to control access to a common resource by multiple threads and avoid critical section problems in a concurrent system such as a multitasking operating system. Semaphores are a type of synchronization primitive.
02
Round
Easy
Face to Face
Duration45 minutes
Interview date20 Jan 2021
Coding problem2
1. Duplicate In Array
Easy
15m average time
85% success
0/40
Asked in companies
You are given an array ‘ARR’ of size ‘N’ containing each number between 1 and ‘N’ - 1 at least once. There is a single integer value that is present in the array twice. Your task is to find the duplicate integer value present in the array.
For example:
Consider ARR = [1, 2, 3, 4, 4], the duplicate integer value present in the array is 4. Hence, the answer is 4 in this case.
Note :
A duplicate number is always present in the given array.
Problem approach
You are given an array ‘ARR’ of size ‘N’ containing each number between 1 and ‘N’ - 1 at least once. There is a single integer value that is present in the array twice. Your task is to find the duplicate integer value present in the array.
2. DBMS Questions
What is Normalization?
What all are its forms?
Problem approach
Normalization is the process of organizing data in a database. This includes creating tables and establishing relationships between those tables according to rules designed both to protect the data and to make the database more flexible by eliminating redundancy and inconsistent dependency.
1 NF
2 NF
3 NF
BCNF
4 NF
5 NF
6 NF
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Skill covered: Programming
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