OpenText Technologies Software Engineer Intern Trainee Interview Questions and Answers

2 Questions on Hackerrank, approx. 60 minutes. Not too hard but requires Java knowledge

Q1. Tell me about yourself, education, etc.
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Q2. Prior projects and struggles faced.
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Q1. Interview with HR and Tech team
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A standardized assessment that measures a person's skills, cognitive abilities, and potential to perform in a specific role.

Q1. Technical interview questions at Automatic Data Processing (ADP) may cover topics such as programming, databases, and software development.
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Q2. They may also ask about problem-solving and how you approach challenging tasks.
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Q3. Emphasize a structured method that involves clearly defining the issue, gathering relevant information, brainstorming potential solutions, evaluating options carefully, implementing the chosen solution, an...read more
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Q4. Data structures, algorithms, SQL querying, object-oriented programming principles, software development lifecycle, database concepts (relational vs. NoSQL), coding challenges in relevant languages (like Py...read more
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Q1. May ask about your background, skills, and how you handle challenges
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Q2. Background questions Tell me about yourself, What are your career goals, What are your strengths and weaknesses, What do you know about ADP, and Why do you want to work at ADP.
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The first round was a group discussion about online shopping.

Q1. What questions did the interviewer ask is related to the Java programming language
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Q1. Discussed about General questions related to Company and personal details
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Q1. JavaScript , coding questions
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Q1. Coding problem, JavaScript and nodejs question
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Mainly 4 Questions
1-2 MCQ
3: Create a class deriving from IReptile and return an object of HatchEgg which has Hatch Method. Hatch Method should return same IReptile object.
4) Sorting IDs in dictionary

Q1. The Interviewer was Very Rude and he doesn't care about the Requirements of Hiring a candidate. he was constantly asking about Other Companies Architectures and The things you did in them. instead of havin...read more
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Q2. SOLID, Interfaces , Boxing/Unboxing
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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
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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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About technical and aptitude skill

Q1. About yourself and payroll
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Q2. Technical skills and experience
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Q1. About types of testing
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Q2. Use any tool for automation
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