Decimal Point Analytics Junior Developer Interview Questions and Answers for Freshers

1 coding test having a DP question and some spark based questions.

Q1. Fibonacci using DP
Ans. 
Fibonacci using Dynamic Programming
• Use an array to store calculated Fibonacci numbers to avoid redundant calculations

• Start with base cases of 0 and 1, then iterate to calculate subsequent Fibonacci numbers

• Time complexity can be reduced from exponential to linear using DP
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Q2. SQL questions ( ranks and partition)
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Q1. Design based questions
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Q1. Data structures
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Q2. Solid Principles
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Q3. Single responsibility principle
Ans. 
Single responsibility principle states that a class should have only one reason to change.
• Each class should have only one responsibility

• Helps in making code more maintainable and easier to understand

• Promotes separation of concerns

• Example: A class that handles user authentication should not also handle file management
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Q4. Javascript question
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Q5. Object oriented concepts
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1. The online test includes questions related to spark and a coding questions.

Q1. Questions related to sql , spark, data structures were asked
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Q2. 1. Questions based on window functions (rank, dense_rank)
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Q1. Overall discussion of the projects that you have worked on.
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Q1. Basic Java questions related to concept
Ans. Basic syruts, hibernate and basic coding practice
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Generally you have to visit their company first and give the exam in pen paper mode and write down all the answer my suggestion is write down all the logic of you can't complete the code write down the pseudocode but attempt all the question

Q1. In the next round they generally asked oops or DBMS question but for my case they asked coding question again and question are easy to medium level if you have the concept in depth you can easily answer
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Q2. Abstraction, Encapsulation, Interface
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Q1. In this round they asked oops and DBMS concept but in depth
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Q1. Generally the question related to hr round and it was normal conversation
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Good coding questions in exam in company

Q1. Object oriented programming questions in interview
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Q2. Data structures and algorithms questions
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There were three questions and you have to do all if you want to get selected because at my time there seeing how many questions people attempted so attempt all the questions

Q1. It was Technical one on one round and you have to give explanation of your codes first then they start asking you questions from OOPS,DBMS and all ... They basically check how much your basics are cleared.
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Q2. What is Super ? Why Java is platform Independent? What is Multiple Inheritance? What is diamond Problem? What is Normalization? Sql Where condition Query? and many more..
Ans. 
A list of technical questions for a Junior Software Developer position.
• Super is a keyword in Java used to refer to the parent class.

• Java is platform independent due to its bytecode being able to run on any platform with a JVM.

• Multiple Inheritance is the ability for a class to inherit from multiple parent classes.

• The diamond problem occurs when a class inherits from two classes that have a common ancestor, causing ambig...read more
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Topic-market estimation of tire sales
time - 1 hr
free to use any resources

Q1. Market estimation related questions. expectations from the role and company
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