Coupa Software Inc Full Stack Developer Interview Questions and Answers

Q1. 1.Tell me about your self 2.Where do you se yourself after 5 years 3.About projects and intership 4.one coding question in python
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Q1. Binary search implementation
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Binary search is a fast search algorithm that finds the position of a target value within a sorted array.
• Binary search works by repeatedly dividing the search interval in half.

• It compares the target value with the middle element of the array.

• If the target value is equal to the middle element, the position is found.

• If the target value is less than the middle element, the search continues on the lower half of the array.

• I...read more
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Q2. Quick sort code implementation
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Quick sort is a popular sorting algorithm that uses divide and conquer strategy.
• Divide the array into two sub-arrays based on a pivot element

• Recursively sort the sub-arrays

• Combine the sorted sub-arrays to get the final sorted array
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Q1. Pagination based react question
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Q2. JavaScript core concept
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Q1. Angular lifecycle hooks, directives, modules
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Q2. Angular forms module, application bootstrap process
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Given JavaScript's complex logic on array and list

Group discussion was the first round on avg there were 15 people in a group discussion at last everyone was given a minute to speak

Q1. Tell me about yourself?
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Q2. Where do you see yourself in five years?
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Q3. Tell me about your family?
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Q4. Do you plan on Higher education?
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I am considering higher education to deepen my knowledge and enhance my skills in software development.
• Pursuing a Master's degree in Computer Science to specialize in AI and machine learning.

• Attending workshops and bootcamps to stay updated with the latest technologies.

• Exploring online courses for specific programming languages or frameworks, like React or Python.

• Networking with professionals in the field to gain insig...read more
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Q1. Questions on OOPs concept
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Q2. Sort the array by parity
Ans. 
Sort an array by parity, placing even numbers before odd numbers while maintaining their relative order.
• Use a stable sorting algorithm to maintain the order of elements.

• Example: Input: [3, 1, 2, 4] → Output: [2, 4, 3, 1]

• Iterate through the array and separate even and odd numbers.

• Combine the even and odd arrays to get the final sorted array.
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Q3. Write SQL queries
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SQL queries are used to interact with databases, allowing for data retrieval, manipulation, and management.
• SELECT statement: Used to retrieve data from a database. Example: SELECT * FROM users;

• WHERE clause: Filters records based on specified conditions. Example: SELECT * FROM users WHERE age > 30;

• JOIN operations: Combines rows from two or more tables based on a related column. Example: SELECT orders.id, users.name F...read more
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Q4. Who wrote the book discovery of the nation
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Q5. What is the official language of kashmir
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Q6. Which city is called city of lakes
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Q1. Find the length of the longest word in the length
Ans. 
To find the longest word in a sentence, split the sentence into words and determine the maximum length among them.
• Split the sentence into words using space as a delimiter.

• Iterate through the array of words and track the length of each word.

• Keep a variable to store the maximum length found.

• Example: In 'The quick brown fox', the longest word is 'quick' with length 5.
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Q2. Push the zeroes in the arrays to the end
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Q3. When was python launched
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Python was launched in February 1991 by Guido van Rossum as a high-level programming language emphasizing code readability.
• Created by Guido van Rossum, Python's first version (0.9.0) was released in February 1991.

• Python 1.0 was released in January 1994, introducing features like functions and exception handling.

• Python 2.0 was launched in October 2000, adding list comprehensions and garbage collection.

• Python 3.0, a majo...read more
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Q4. What is name of ai from meta/google/amazon
Ans. 
Meta, Google, and Amazon have developed various AI systems, including ChatGPT, Bard, and Alexa, each serving unique purposes.
• Meta's AI: Focuses on social media and content moderation, enhancing user experience.

• Google's Bard: A conversational AI designed to assist with information retrieval and natural language processing.

• Amazon's Alexa: A voice-activated assistant that controls smart home devices and provides informati...read more
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Q5. What do you do in your free time
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In my free time, I enjoy coding personal projects, reading tech blogs, and exploring the outdoors through hiking and photography.
• I work on personal coding projects, like building a weather app using React.

• I read tech blogs and articles to stay updated on industry trends.

• I enjoy hiking on weekends, capturing nature through photography.

• I participate in online coding challenges to sharpen my skills.
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Q6. Tell me your pros and cons
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Q1. What is V model
Ans. 
V model is a software development model that emphasizes testing at each stage of development.
• V model is also known as Verification and Validation model.

• It is a sequential path of the waterfall model, where each phase must be completed before the next phase begins.

• The left side of the V represents the development phases, while the right side represents the testing phases.

• It helps in early detection and correction of def...read more
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Interview for backend developer with experience in django

Q1. Writing ORM queries in django
Ans. 
Django ORM allows developers to interact with the database using Python objects instead of SQL queries.
• Use `Model.objects.all()` to retrieve all records from a model.

• Filter records with `Model.objects.filter(field=value)`; e.g., `Book.objects.filter(author='John')`.

• Use `Model.objects.get(pk=value)` to retrieve a single record by primary key.

• Chain methods for complex queries, e.g., `Model.objects.filter(field1=value1).e...read more
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Q2. Database design with foregin and many to many fields
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Q3. Explain django's request response flow
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Django's request response flow involves the request being handled by URL dispatcher, views, middleware, and templates before generating a response.
• Request is received by URL dispatcher which maps the URL to a view function

• View function processes the request, interacts with models if needed, and returns a response

• Middleware can intercept the request and response for additional processing

• Templates are used to generate HT...read more
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Arrays, basics. easy, some important topics in python and sql

Q1. SQL basics question learned in online or self
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Q2. Joins, groupby, clause, projection, having
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