Meesho SDE-2 Interview Questions and Answers for Freshers

Round duration - 60 minutes
Round difficulty - Medium

- It was a face to face (virtually) round.
- Two questions one after one and you are expected to pass all the test cases.
- Question was Easy and Medium Easy. (tags: stack, array, bfs, dfs, array)

- Timing: Afternoon
- Interviewer: he was nice, as I was able to solve both question, he was very happy, and given me the feedback.

Q1.  Remove Consecutive Duplicates From String
You are given a string 'STR' consisting of lower and upper case characters. You need to remove the consecutive duplicates characters, and return the new ...read more
Ans. 
The task is to remove consecutive duplicate characters from a given string and return the new string.
• Iterate through the characters of the string

• Compare each character with the next character

• If they are the same, skip the next character

• If they are different, append the current character to the new string
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Q2. Find Number Of Islands
You are given a 2-dimensional array/list having N rows and M columns, which is filled with ones(1) and zeroes(0). 1 signifies land, and 0 signifies water.
A cell is said to be conn...read more
Ans. 
The task is to find the number of islands present in a 2-dimensional array filled with ones and zeroes.
• Iterate through each cell in the array

• If the cell is land (1) and not visited, perform a depth-first search to find all connected land cells

• Increment the count of islands for each connected component found
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Round duration - 135 minutes
Round difficulty - Medium

Machine Coding.

Timing: Afternoon
The interviewer was answering my questions nicely.

Q1. System Design Questions
Design Facebook API. (Question was vague)

Given a basic interface and the list of functionality that need to implement.
And basic test cases were there again the operations.
Ans. 
Design Facebook API
• Define the basic interface for the API

• Implement functionality for user authentication and authorization

• Create endpoints for posting, retrieving, and deleting posts

• Include features for liking, commenting, and sharing posts

• Implement a search functionality for users, posts, and hashtags

• Design a notification system for user interactions

• Consider scalability and performance optimizations
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Round duration - 60 minutes
Round difficulty - Medium

Hiring Manager.
Interviewer: Sr Engineering Manager.
Timing: evening.

The environment was cool.

Q1. Basic HR Questions
He asked me multiple things.
1. about my project and tech stacks used in the project.
2. He asked me to design an online exam system. (HLD & LLD)
3. In the process, he asked me to design...read more
Ans. 
Answering basic HR questions in a SDE - 2 interview
• Discuss your project and the technologies used

• Design an online exam system (HLD & LLD)

• Design tables and queries for the system

• Explain how you keep yourself updated and continue learning
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