Nish Developers Retail Sales Officer Interview Questions and Answers

Q1. In trend java questions
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Q1. Advance java questions, questions related to microservice and java 8
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Q1. How do you handle conflicting stockholder requirements n a project?
Ans. 
I prioritize stakeholder requirements through effective communication, negotiation, and alignment with project goals.
• Identify and document all stakeholder requirements to understand the full scope.

• Facilitate meetings to discuss conflicting requirements and encourage open dialogue.

• Use prioritization techniques, such as MoSCoW (Must have, Should have, Could have, Won't have), to assess the importance of each requirement.

• ...read more
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Q1. What is the difference between an abstract class and an interface in object-oriented programming?
Ans. 
Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.
• Abstract class can have method implementations, while interface cannot.

• A class can implement multiple interfaces, but can only inherit from one abstract class.

• Interfaces are used to define contracts for classes to implement, while abstract classes are used to provide a common base for subclasses.

• Example: Abstr...read more
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Q2. Abstract classes can have implemented methods; interfaces can only have declarations (before JAVA 8).
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Q1. What is the pivot table in Excel
Ans. 
A pivot table in Excel is a data summarization tool that allows you to reorganize and summarize selected columns and rows of data.
• Allows users to summarize and analyze large datasets

• Can easily reorganize data by dragging and dropping fields

• Provides options to calculate sums, averages, counts, etc. for data

• Helps in creating interactive reports and charts

• Useful for identifying trends and patterns in data
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Q2. A pivot table is used to summarize...........etc.
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Test was of 1.5 hrs and it was online. It was completely based on technical questions.

This test was offline and it was a pen paper test wherein 10 questions will be given you have to write code or spot the error and correct them.

Q1. Asked questions about React
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Q2. Question based on project
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Data structure and algorithm, easy and medium questions

Q1. How do you handle debugging in your code?
Ans. 
I use print statements, logging, and debugging tools to identify and fix issues in my code.
• I start by reviewing the code and understanding the logic behind it.

• I use print statements to check the values of variables at different points in the code.

• I utilize logging to track the flow of the program and identify any errors.

• I use debugging tools like breakpoints and step-through debugging to pinpoint the exact location of ...read more
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Q2. What is your approach to optimizing a slow-running application?
Ans. 
Identify bottlenecks, analyze code, optimize algorithms, utilize caching, and consider hardware upgrades.
• Identify bottlenecks in the application by profiling and monitoring performance.

• Analyze the code to find inefficient algorithms or database queries.

• Optimize algorithms and data structures to improve efficiency.

• Utilize caching mechanisms to reduce redundant computations.

• Consider hardware upgrades such as increasing m
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Q3. What is the difference between functional and object-oriented programming?
Ans. 
Functional programming focuses on functions and immutability, while object-oriented programming focuses on objects and encapsulation.
• Functional programming uses pure functions that do not have side effects.

• Object-oriented programming uses objects that encapsulate data and behavior.

• In functional programming, data is immutable and functions are first-class citizens.

• In object-oriented programming, objects can have state a...read more
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Q1. Write a function to find the first non-repeating character in a string ?
Ans. 
Function to find the first non-repeating character in a string
• Create a hashmap to store character frequencies

• Iterate through the string to populate the hashmap

• Iterate through the string again to find the first non-repeating character
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Q2. Explain the difference between a stack and a queue . Provide an example of when you would use each?
Ans. 
A stack is a data structure that follows the Last In First Out (LIFO) principle, while a queue follows the First In First Out (FIFO) principle.
• Stack: Last In First Out (LIFO), used for function calls, undo operations.

• Queue: First In First Out (FIFO), used for printing tasks, message queues.
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