Swiggy Software Developer Interview Questions, Process, and Tips for Experienced

Q1. Tasks in a class using js
Ans. 
Tasks in a class using JavaScript involve defining properties and methods for objects.
• Define properties using 'this' keyword

• Create methods within the class using 'function'

• Access properties and methods using dot notation
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60 mins - aptitude test, then followed by mcq's and 2 coding questions for total 2 hrs in mettl platform

Q1. Reverse elements in an array OOPS concepts Reverse LinkedList all with efficent time complexities Project related,Acid Properties
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Q1. General questions like where do you see yourself in next 5 years, why should we hire you etc...
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Round duration - 75 minutes
Round difficulty - Easy

This round was conducted in Hackerrank portal for a total duration of 75 minutes and was divided into 4 sections.

1st Section : Aptitude Section : 14 questions , 28 minutes
2nd Section : Technical Section : 12 questions , 17 minutes
3rd Section :1 coding Questions : 20 minutes+30 minutes

This Round was Conducted on Hackerrank (Webcam Enabled).

Q1. DBMS
Write a query that prints a list of employee names (i.e.: the name attribute) for employees in Employee having a salary greater than $2000 per month who have been employees for less than months. Sort y...read more
Ans. 
Tip 1: Even though DS and Algo is the base for any tech interview, don't take lightly your core branch courses.
Tip 2: Do practice for SQL Queries.
 
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Q2. Find Bugs in Code
Given a Problem Statement and a Code we need to find the bug in the code and correct the given code.
Ans. 
Tip 1: Other than writing code we must be able to understand others code as well.
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Q3. Count nodes within K-distance
You are given a connected, undirected and acyclic graph with some of the nodes as marked and a positive number 'K'. You need to return the count of all such nodes whic...read more
Ans. 
I knew that this has to be done in O(n logn ) or less time complexity so I approached in this way :
 
Intuition
From root, say the target node is at depth 3 in the left branch. It means that any nodes that are distance K - 3 in the right branch should be added to the answer.
 
Algorithm
Traverse every node with a depth first search dfs. We'll add all nodes x to the answer such that node is the node on the path from
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Round duration - 90 minutes
Round difficulty - Medium

I was shared a link of Google Meet and the Google Docs was shared where there was 1 coding problem to be coded there and then the code was run on an IDE to check the sample tests.
Then the interview was followed by a lot of Operating System and Computer System Architecture Questions.
There were 2 Interviewers and both were helpful.
The timing was from 2:30 PM to 4:00 PM

Q1.  Largest subarray with equal number of 0s and 1s
You are given an array consisting of 0s and 1s. You need to find the length of the largest subarray with an equal number of 0s and 1s.
For example:
If th...read more
Ans. 
Approach : I changed array entry for 0 to -1.
Then I took Prefix sum of array and then the problem changed to finding two index in array such that arr[i]=arr[j] and abs(j-i) is maximum.
Time Complexity : O(n) where n= number of elements in array.
Space Complexity : O(n)
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Q2. Computer System Architecture
What is TLB? Why is it used? What are huge pages and their advantages? Which is accessed first TLB or cache? Can we access TLB and cache in parallel?
Ans. 
My Answer :
Huge pages are larger in size and require less number of TLB entries for the same amount of memory. This leads to larger virtual address space being cached and hence better performance. Out of TLB and cache, TLB is accessed first because virtual memory address must first be translated to the physical memory address and then this address is used to access data from the cache. TLB and cache can be accessed in ...read more
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Q3. System Architecture
How are system calls made at assembly level? How are IO operations like cout translated at low level?
Ans. 
System calls are made through software interrupts (int 0x40 in x86 architecture) and system call number and system call parameters are given as parameters to the software interrupt handler. IO operations like cout internally make system calls (write system call in this case to stdout) to a file descriptor.

Tips : Know the basic working of your commands .
Revise your Core Subjects before appearing in Interviews.
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Q4. Computer System Architecture
Discussion about how the file system is stored on disk and how it works.
Ans. 
Ans:- Explained him about xv6 file system. Explained mainly directory inodes, file inodes and data blocks. Explained how ls accesses this hierarchical structure to retrieve all the files and directories in the directory
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Q5. Computer System Architecture
Distinguish between RISC and CISC architectures.
Ans. 
Ans:-Take a look at this https://superuser.com/questions/883330/what-is-the-difference-between-intel-cisc-and-arm-risc-architecture.
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Round duration - 45 minutes
Round difficulty - Easy

The round was held on Google Meet with HR from 2:30 PM to 3:15 PM.
The HR was friendly and asked the basic questions.

Q1. You have changed jobs/jumped ship already, why so?
Ans. 
My ans -

My switches have helped me develop better interpersonal skills, gain diverse skills and adapt to rapidly changing business environments.

I can solve problems more efficiently and creatively, as I have learned to live with ambiguity and uncertainty. My first job helped me develop patience.

My second job helped me master spreadsheets and numbers.

My third job helped me develop better people skills and also adjust am...read more
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Q2. If I call up your current or previous reporting manager now, what will be their opinion about you? What will they say that you need to work on?
Ans. 
Tips : Have good relations wherever you work .

My answer-

I used to get nervous while speaking in front of large groups. You can say that I had stage-fear, and I believe that I still do.
This is partly because I am shy by nature. No wonder that I have been always assigned Individual Contributor roles.
My current manager might cite this as one of my weaknesses, and he has actually helped me to overcome my shyness.
I am worki...read more
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Q3. Where do you see yourself 3 years from now? Where do you see yourself in 5 years?
Ans. 
My current goal is to find a career spot that ensures continued growth alongside new challenges daily.

3 years from now, I see myself as an experienced and reliable senior in the team and 5 years from now, I assume that I will be ready to take up managerial responsibilities like product strategy.

I want to have a stable career in a single organization and hope I will get the same wherever I start.
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Q4. Did you ever have a conflict with your current/previous boss or professor?
Ans. 
My answer -

Recently I had a disagreement with one of my professors about a question that was out of syllabus in one of the semester exams.

It was not a major one, but yes I will label it a ‘conflict’.

Most of my friends and peers did not attempt this question due to ambiguity.

When I brought the cause into my professor’s notice in private, he remained cold and unconcerned.

So, I and my batchmates had a discussion following...read more
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Q1. Introduction about yourself and expectation
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Q1. IOS questions and architecture question about modularisation. From resume.
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Q2. Question Asked about memory management
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Q3. Question about modularisation and interface design
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Q1. Design Redis system
Ans. 
Design a Redis system for efficient data storage and retrieval
• Use Redis as an in-memory data store for fast access to frequently accessed data

• Implement data sharding to distribute data across multiple Redis instances for scalability

• Utilize Redis data structures like strings, lists, sets, and hashes for different types of data storage needs

• Set up replication and clustering for high availability and fault tolerance

• Use Re...read more
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I'm knowlege of c language

Q1. Aney question of c language
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Q2. And data base and etc
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