Personal Network Interview Questions and Answers

Round duration - 90 minutes
Round difficulty - Hard

Online coding round , 2-3 questions. Level - med-hard

Q1. 
Fibonacci Number Verification
Identify if the provided integer 'N' is a Fibonacci number.
A number is termed as a Fibonacci number if it appears in the Fibonacci sequence, where each number is the sum of...read more
Ans. 
Check if a given number is a Fibonacci number or not.
• Iterate through the Fibonacci sequence until you find a number greater than or equal to the given number.

• Check if the given number matches the Fibonacci number found in the sequence.

• If the given number matches, output 'YES'; otherwise, output 'NO'.
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Q2. 
Break The Board Problem Statement
Your task is to break a board of given dimensions 'L' by 'W' into 'L' * 'W' smaller squares, ensuring the total cost of breaking is minimized.
Input:
The first line con...read more
Ans. 
Minimize cost of breaking a board into smaller squares by optimizing horizontal and vertical cuts.
• Iterate through all possible horizontal and vertical cuts to find the minimum cost

• Use dynamic programming to store and reuse subproblem solutions

• Calculate the cost of breaking the board into smaller squares based on the given dimensions and cut costs
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Round duration - 60 Minutes
Round difficulty - Medium

2 interviewers , coding problem, no compilation.

Q1. 
Minimum Number Of People To Teach
Ninja has started a social networking site called Ninjas Space. The platform consists of ‘N’ users and supports ‘M’ different languages. Users communicate if they know at...read more
Ans. 
Determine the minimum number of users to teach a common language so all friends can communicate on a social networking site.
• Create a graph where users are nodes and friendships are edges.

• Find connected components in the graph.

• For each connected component, determine the minimum number of users to teach a common language.

• Return the sum of minimum users needed for all connected components.
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Round duration - 40 minutes
Round difficulty - Medium

CS fundamentals. Tough round. 40 mins interview. 1 interviewer from USA

Round duration - 40 minutes
Round difficulty - Hard

System Design Problem

Q1. Design a Facebook-like application.
Ans. 
Design a Facebook-like application for social networking.
• User profiles with personal information and photos

• News feed displaying posts from friends

• Ability to like, comment, and share posts

• Friend requests and messaging functionality

• Groups and events for community engagement
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Standard Leetcode Medium question.

Q1. DSA Questions and database questions.
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Leetcode similar coding tests

Q1. How do you test the feasibility of an idea?
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Q2. Explain the process of calling an API
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Q1. What design tool can be implemented to determine if A and B are friends, and if B and C are friends, subsequently making A and C friends automatically?
Ans. 
A graph traversal algorithm like Depth First Search (DFS) can be implemented to determine if A and B are friends, and if B and C are friends, subsequently making A and C friends automatically.
• Implement a graph where each person is a node and friendships are edges between nodes

• Use Depth First Search (DFS) to traverse the graph and check for connections between A and B, and B and C

• If both connections exist, then A and C
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Emails to the host and guests.

Q1. Why you are perfect fit?
Ans. 
I have the necessary skills, experience, and passion for the role.
• I have relevant experience in the industry

• I possess the required skills and qualifications

• I am passionate about the work and eager to contribute

• I have a track record of success in similar roles
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Q2. Why you want to change?
Ans. 
Seeking new challenges and growth opportunities in a different environment.
• Desire for new challenges and learning experiences

• Opportunity for career advancement

• Seeking a better work-life balance

• Interest in exploring different industries or sectors
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Q1. They will ask about your profile and past experience.
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Q1. A peer level colleague will ask some basic knowledge check questions
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This is literally a live coding test. For analytics expect SQL, python, R.

Q1. Interviewed by a manager of another team
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Q1. Interviewed by dotted line reporting manager
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Q1. Cross functional interview
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Q1. Core Values Interview
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Q1. How to sort ararat
Ans. 
Ararat can be sorted alphabetically or numerically.
• Sort alphabetically: Arrange in ascending order based on the letters in the word.

• Sort numerically: Arrange in ascending order based on the numerical value of each character.
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