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Big Basket interview experience Real time questions & tips from candidates to crack your interview
SDE - 1
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3 rounds | 5 Coding problems
Interview preparation journey
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Preparation
Duration: 2 months
Topics: Data Structures: Stack, Queue, LinkedList, Heap, Tree, Hashing, DBMS: Transactions, Normalisation, Sql, OS: Virtualisation, Page fault, hit and miss rate, Scheduling Algorithm, Computer Networks: OSI layer, Circuit switching and Packet Switching
Tip
Tip

Tip 1 : Practice more and more coding problems, focusing on time complexity
Tip 2 : Do at least 3-4 projects 
Tip 3 : Keep on revising core CS subjects like OS,DBMS, and computer networks

Application process
Where: Campus
Eligibility:
Resume Tip
Resume tip

Tip 1 : Mention projects and have a better understanding of those. (Never put anything which you are not confident on)
Tip 2 : Describe projects in 3-4 lines, so that one could get an idea of the project by looking into the resume

Interview rounds
01
Round
Easy
Online Coding Interview
Duration120 minutes
Interview date18 Oct 2020
Coding problem2

10MCQ + 1Coding and one SQL query were there
It was an online test with the open camera.

1. Longest Palindromic Substring
Moderate
20m average time
80% success
0/80
Asked in companies
CIS - Cyber InfrastructureGartnerQuikr

You are given a string 'str' of length 'N'.


Your task is to return the longest palindromic substring. If there are multiple strings, return any.


...

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Problem approach

This is a very standard question of dynamic programming.
The approach should be dynamic programming only, otherwise with brute force only 3 test cases will pass.
 

Try solving now
2. DBMS Questions

How can you join a table to itself? Give an example

Problem approach

Tip 1 : Always approach using joins (mostly they ask about problems related to this)

02
Round
Easy
Video Call
Duration60 minutes
Interview date24 Apr 2022
Coding problem1

It was one to one video call interview in the morning

1. System Design

I was asked to design ludo snake ladder game.

Problem approach

Tip 1 : I described my approach using Object-oriented programming (Oop is very important)
Tip 2 : Use only those data structures of which you are very aware, At the last interviewer asked me about all those data structures I used in detail (Hashmap, Hashing in detail with time complexity)

03
Round
Easy
Video Call
Duration60 minutes
Interview date24 Apr 2022
Coding problem2

This interview was with Senior guy in night (9pm)

1. Puzzle

There are three ticket windows at the railway station, at two windows tickets are being given at the same speed, and at the third window, it takes twice the time taken at another window. Whenever a person is coming a guard redirects him to a specific window to ensure average waiting time is minimum. How guard is doing this?

Problem approach

Tip 1 : This is based on OS and we need to thing of scheduling.
Tip 2 : Guard will send people to the windows in reverse ratio to the speed at which tickets are being given.

2. Project Questions

What gave you the idea for your project?

Why do you choose these tech stacks for the project?

What are the key features of your project?

Problem approach

Tip 1 : I described my all projects very well, the interviewer liked my cloud computing project the most.
Tip 2 : Always prepare your projects well

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