CapFront Technologies Interview Questions and Answers for Freshers

Q1. DP on Stock buy n sell
Ans. 
Implement a dynamic programming solution for stock buy and sell problem.
• Use dynamic programming to find the maximum profit by buying and selling stocks.

• Keep track of the minimum stock price seen so far and update the maximum profit accordingly.

• Consider edge cases like no profit or negative profit.

• Example: Input [7, 1, 5, 3, 6, 4], Output 5 (buy at 1, sell at 6)
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Q1. Dynamo db working style
Ans. 
DynamoDB is a fully managed NoSQL database service provided by AWS, designed for high performance and scalability.
• DynamoDB is schema-less, allowing for flexible data models

• It offers high availability and durability through replication and automatic backups

• DynamoDB uses primary keys for data retrieval, with optional secondary indexes for querying

• It supports ACID transactions for consistency and reliability

• DynamoDB is de...read more
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Q2. Function vs method
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A function is a standalone block of code that can be called independently, while a method is a function that is associated with a class or object.
• Functions are standalone blocks of code, while methods are functions associated with classes or objects.

• Functions can be called independently, while methods are called on specific instances of classes or objects.

• Functions are defined outside of classes, while methods are defi...read more
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Q1. What is your job role
Ans. 
I am responsible for assisting in various tasks and projects within the company.
• Supporting team members in daily operations

• Completing assigned tasks in a timely manner

• Assisting in research and analysis

• Participating in meetings and discussions
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Q2. What is the ctc
Ans. 
CTC stands for Cost to Company, which includes all expenses related to an employee's compensation.
• CTC includes salary, bonuses, benefits, and any other perks provided by the company

• It is the total amount of money a company spends on an employee in a year

• CTC is often used to negotiate job offers and understand the full value of a compensation package
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Basic python, sql and pandas questions

Q1. Case study (Probability questions)
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Q2. Resume projects
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Test was based on arrays and some dsa concepts.

Q1. SQL questions and logical reasoning questions
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Q1. Give a brief Introduction
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Q1. Does Java support pass by reference?
Ans. 
Yes
• Java uses pass by value for all variables, including object references.

• When an object reference is passed as an argument, a copy of the reference is passed, not the actual object.

• Modifying the reference inside the method will not affect the original reference outside the method.

• However, modifications to the object's state inside the method will be visible outside the method.
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Q2. Explain Singleton Pattern
Ans. 
Singleton pattern restricts the instantiation of a class to a single object.
• Singleton pattern ensures that only one instance of a class exists throughout the application.

• It provides a global point of access to the instance.

• Commonly used in scenarios where a single instance needs to coordinate actions across the system.

• Example: Database connection manager, logger, configuration manager.
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