AppViewX Intern Interview Questions and Answers

Basic aptitude , c programming, digital design

Q1. Puzzels,digital design, programming
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Q2. Implement flip flop using mux
Ans. 
Flip flop can be implemented using a multiplexer by selecting the input based on the control signal.
• Use a 2:1 multiplexer to select between the current state and the next state

• Connect the output of the multiplexer to the input of the flip flop

• Control signal determines which input is passed through the multiplexer
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Easy - Medium Leetcode

Logical reasoning questions was there

Q1. Tell me about yourself? From which institute you have done your schooling and college? What are your strengths and weaknesses? How much time did it took to come to the office?
Ans. 
I am a dedicated and hardworking individual with a strong educational background. I completed my schooling at XYZ School and my college at ABC University.
• Schooling: XYZ School

• College: ABC University

• Strengths: Strong work ethic, excellent communication skills, ability to work well in a team

• Weaknesses: Sometimes too detail-oriented, can be overly critical of my own work

• Time to office: 30 minutes
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Q1. Design a ridesharing service
Ans. 
A ridesharing service connecting drivers with passengers for convenient and affordable transportation.
• Allow users to request rides through a mobile app

• Match drivers with passengers based on location and destination

• Provide estimated arrival times and fare estimates

• Implement a rating system for drivers and passengers

• Offer options for shared rides to reduce costs
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Round duration - 60 minutes
Round difficulty - Medium

The round was technical round and it was held on google meet around 1 pm

Q1. 
Maximum Sum Rectangle Problem
Given an M x N matrix of integers ARR, your task is to identify the rectangle within the matrix that has the greatest sum of its elements.
Input:
The first line of input co...read more
Ans. Brute force
In this approach, we'll try to consider each rectangle that can be formed using elements of the array. To do this we fix (X1,Y1) coordinates of starting vertex and iterate through the matrix for every pair (X2,Y2) as the coordinates of ending vertex. Now we have a rectangle with coordinates (X1,Y1), (X1,Y2), (X2,Y1) and (X2,Y2).
We'll find the sum of elements within this rectangle and compare it with MAXSUM. ...read more
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Round duration - 60 minutes
Round difficulty - Medium

It was managerial round and took place around 3 pm

Q1. 
Infix to Postfix Conversion
You are provided with a string EXP which represents a valid infix expression. Your task is to convert this given infix expression into a postfix expression.
Explanation:
An i...read more
Ans. Stack
We will scan the expression from left to write and if we encounter an operand we will append it to our answer. If we encounter an operator we will pop all the operators with equal or higher precedence and append them to our answer. And push the current operator. In the end, we will empty the stack.
Order of precedence = [ ‘^’, ‘*’ and ‘/’, ‘+’ and ‘-’, ‘(’, ‘)’]
Order of precedence [ link ]
The algorithm will be-
1. ANS ...read more
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Machine coding round

Q1. About projects, like the what stack used
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Q2. Hr question about why to join browserstack
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Q1. Regarding flip-flops and timers
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