EI Design Interview Questions and Answers

Easy aptitude questions based on logical reasoning and basic maths.

Easy logic-based question based on arrays and strings with some javascript output-based questions.

Discussion about the projects that I made in college and the tech stack I know.
1 basic array/string-based problem.

They have an Online Aptitude cum coding test which contains some 20-30 Question to be done in 3Hrs.
20 Questions of Aptitude and 10 Questions of coding(Which includes Display output and correct the program Questions)

Easy Interview lasting about 30-45 Mins
They mostly ask questions based on projects and they like to see some certifications.
DSA questions were easy to medium.

Basic question of indiabix topics and 10 code questions

Q1. Resume based questions,coding questions,core subject questions
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Q2. What is indexing in dbms?
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Q3. Secondlargest element
Ans. 
Find the second largest element in an array of integers efficiently.
• Iterate through the array while keeping track of the largest and second largest elements.

• Initialize two variables: largest and secondLargest to negative infinity.

• For each element, update largest if the current element is greater than largest.

• If the current element is less than largest but greater than secondLargest, update secondLargest.

• Example: For ar...read more
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Q4. Pascal triangle
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My name is amar reverse the string without using inbuilt method

Q1. What is nodejs and what is promise. What is closures
Ans. 
Node.js is a runtime environment for executing JavaScript code outside of a web browser. Promises are objects representing the eventual completion or failure of an asynchronous operation. Closures are functions that have access to their own scope, as well as the scope in which they were defined.
• Node.js is a runtime environment that allows you to run JavaScript on the server-side.

• Promises are used in asynchronous progra...read more
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Q1. Related to work experience and skills on Resume
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Q2. Formula to find midpoint and slope of a line
Ans. 
Midpoint and slope formulas help determine key characteristics of a line in coordinate geometry.
• Midpoint formula: M = ((x1 + x2)/2, (y1 + y2)/2). Example: M = ((1 + 3)/2, (2 + 4)/2) = (2, 3).

• Slope formula: m = (y2 - y1) / (x2 - x1). Example: m = (4 - 2) / (3 - 1) = 1.

• Midpoint gives the center point between two coordinates.

• Slope indicates the steepness and direction of the line.
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So prepare good amout of aptitude , and try to solve at least 15 Questions

It was an Online coding test 2 questions were there. difficulty (Easy and Medium).

The third round was again an coding round but it was a pen and paper test , it was in offline mode they will tell you the center after you will complete 2nd round.
In pen and paper test there are 10 coding questions and from topics array , string , recursion , Bit manipulation , BST , Linked List. so you have to solve at least 6-7 questions.

Q1. Questions on HTML, CSS
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Q2. Permutations in string (Can you Backtracking approach). Always try to explain your approach
Ans. 
Generate all permutations of a string using a backtracking approach.
• Backtracking involves exploring all possible configurations and abandoning those that don't meet criteria.

• Start with an empty string and build permutations by adding one character at a time.

• Use a boolean array to track which characters are already included in the current permutation.

• Example: For the string 'abc', the permutations are 'abc', 'acb', 'bac...read more
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Q3. Explain your Project?
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