OpenText Technologies Senior Software Engineer 2 Interview Questions and Answers

Q1. What is split function in ajava
Ans. 
The split function in Java is used to split a string into an array of substrings based on a specified delimiter.
• The split function takes a regular expression as a parameter to specify the delimiter.

• The result is an array of strings containing the substrings.

• Example: String str = 'Hello,World'; String[] parts = str.split(','); // parts = ['Hello', 'World']
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Sorting programs, some algorithms on logic

Q1. C# Basics Design patterns Architectural questions
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Q2. Product Design Performance based
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Q3. Programs on maze problem
Ans. 
Maze problem programs involve finding a path through a maze from start to finish.
• Use depth-first search or breadth-first search algorithms to solve maze problems.

• Consider using backtracking to handle dead ends in the maze.

• Implement a recursive function to explore all possible paths in the maze.

• Use a stack or queue data structure to keep track of visited cells and potential paths.
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Q4. Programs on snake ladder
Ans. 
Snake ladder program simulates a game where players move based on dice rolls.
• Create a board with 100 squares representing the snake ladder game.

• Players take turns rolling a dice and moving their token on the board.

• If a player lands on a square with a snake head, they move back to the square's tail.

• If a player lands on a square with a ladder bottom, they move to the ladder's top.

• The game continues until a player reaches
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Q1. Basic question about oops concepts, design principals, dependency injection, sql, entity framework.
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Q1. Project structure, scenario based questions, why and where to implement pattern, why we use entity framework over ado etc.
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Q1. What is your family background?
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Q2. What are your salary expectations?
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Q3. Why are you looking for a change?
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Q4. Share details of your previous job.
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Q5. Why should we hire you?
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Topics on electronics and C programming

Q1. Questions on simple python programs and electronics basics
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Q2. Question on simple linked list
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Q3. Program for fibonacci seq
Ans. 
Program to generate Fibonacci sequence
• Start with two initial numbers, 0 and 1

• Add the previous two numbers to get the next number in the sequence

• Repeat this process to generate the Fibonacci sequence

• Example: 0, 1, 1, 2, 3, 5, 8, 13, ...
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Q4. Questions on mosfets
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Q1. Why you would like to join the company, and other questions
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Q1. Find longest palindromic substring in a given string.
Ans. 
Use dynamic programming to find the longest palindromic substring in a given string.
• Iterate through the string and expand around each character to find palindromes.

• Store the length of the longest palindrome found so far.

• Return the substring based on the start and end indices of the longest palindrome.
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Q2. How to serialize and deserialise a tree
Ans. 
To serialize and deserialize a tree, use a recursive approach to traverse the tree and store the data in a suitable format.
• Use pre-order traversal to serialize the tree by storing the node values in a list or string.

• For deserialization, reconstruct the tree by recursively building nodes from the serialized data.

• Consider using JSON or XML format for serialization to easily store and retrieve tree structure.
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Q3. Find if a given regex (containing ., * and lower case english chars) matches a given string.
Ans. 
Use regex library to match given regex with string.
• Use a regex library like re in Python to match the given regex with the string.

• Check if the regex matches the string using the library functions.

• Handle cases where the regex contains special characters like . and * appropriately.
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Q4. Explain about throttling and implement throttle function.
Ans. 
Throttling is a technique used to control the rate of requests sent to a server.
• Throttling helps prevent server overload by limiting the number of requests processed at a time.

• Implementing a throttle function involves setting a maximum request rate and delaying excess requests.

• Example: Implementing a throttle function in a web application to limit the number of API calls made to a third-party service.

• Example: Throttlin...read more
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Q1. Find squares of elements in a sorted array and return the sorted response.
Ans. 
Sort the squares of elements in a sorted array and return the sorted response.
• Iterate through the array and square each element.

• Store the squared values in a new array.

• Sort the new array and return it.
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Q2. Write a short promise example and implement your own promise
Ans. 
A promise is a commitment to do something in the future, typically used for asynchronous operations in JavaScript.
• Promises are used to handle asynchronous operations in JavaScript.

• They represent a value that may be available now, in the future, or never.

• Promises have three states: pending, fulfilled, or rejected.

• Example: new Promise((resolve, reject) => { setTimeout(() => resolve('Done!'), 1000); });
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Q3. Explain event loop, what are different types of queues in event loop
Ans. 
Event loop is a mechanism that allows for asynchronous execution of code by managing the order of events in a single thread.
• Event loop continuously checks the call stack for any functions that need to be executed, and processes them in a non-blocking manner.

• Different types of queues in event loop include microtask queue (Promise callbacks), macrotask queue (setTimeout, setInterval callbacks), and animation frame queue
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Q4. What is virtual DOM and why its faster
Ans. 
Virtual DOM is a lightweight copy of the actual DOM, used to improve performance by minimizing direct manipulation of the real DOM.
• Virtual DOM is a concept used in frameworks like React to optimize rendering performance.

• Changes are first made to the virtual DOM, which is then compared to the real DOM to identify the minimal updates needed.

• This approach reduces the number of actual DOM manipulations, resulting in faster...read more
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Data structure related question

Q1. Quesitions related to data structure, cloud
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Q2. Find the second highest integer
Ans. 
To find the second highest integer in an array, sort the array in descending order and return the second element.
• Sort the array in descending order

• Return the second element in the sorted array

• Handle edge cases like duplicates or small arrays
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Q3. Question related to two sum
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Q4. Some sliding window problems
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Q1. General Behavioral Questions
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Q1. Explain microservices.
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Q2. OOPS
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