Alpha FinSoft Software Consultant Interview Questions and Answers

Q1. Dependency injection
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Q2. What are oops concepts
Ans. 
Object-oriented programming concepts that focus on data encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: bundling data and methods that operate on the data into a single unit (class)

• Inheritance: ability of a class to inherit properties and behavior from another class

• Polymorphism: ability to present the same interface for different data types

• Abstraction: hiding the complex implementation details
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Quants, DSA, Logical, Analytical, OS, DBMS

Q1. Please introduce yourself
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Q2. Why UBS and what excited you
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Q1. What are joins in sql
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q2. What is OOP features
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OOP features are key concepts in Object-Oriented Programming that include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object)

• Inheritance: Ability for a class to inherit properties and behavior from another class

• Polymorphism: Ability for objects to be treated as instances of their parent class or their own class

• Abstractio...read more
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Q3. Primary key , foreign key
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Q4. Exception in java
Ans. 
An exception in Java is a runtime error that disrupts the normal flow of a program.
• Exceptions are objects that are thrown when an error occurs during the execution of a program.

• They can be caught and handled using try-catch blocks.

• Common types of exceptions in Java include NullPointerException, ArrayIndexOutOfBoundsException, and IOException.
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Quant Topics: Interests, Sequence and Series along with Missing items, Time and Distance/Work,
Verbal Topics: Comprehension, Corrections, Grammar etc
CS Core Subjects: DSA, OOPS, DBMS, OS

Overall Test Difficulty was Easy-Medium

System asked to choose one of the programming languages from C, C++ or Java. (Note: You can't change the language once confirmed!)
There were 7 different coding questions along with code. You just need to debug the code to get the correct output.
DSA: Graphs (Basics), Linked Lists, Conditional Statements, and Arrays (Stack and Queue)

Overall Difficulty was Medium (tbh, it depends on the practice you have done!)

Q1. 1. Tell me about yourself 2. What tech stack(s) you have worked on? Why? Why not others? 3. SQL queries based on joins, nesting and aggregations 4. Logical reasoning questions 5. Previous internships exper...read more
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Q1. 1. Tell me about yourself 2. Why you do seek to join this company? 3. Are you comfortable working in shifts? If yes, how will you manage your time? 4. SQL queries 5. Logical question: Total number of squar...read more
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Q1. 1. Tell me about your day. Walk me through it. 2. If given a coding problem, what is your preferred language? Why? 3. Walk me through your best project in your resume. Why/How/When did you make it? 4. Tell...read more
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The coding test comprised 4 questions, held on the Hackerank platform. The time-bound was 90 minutes. I would rate the questions as easy, medium, medium, and hard. You had to solve at least 3 and 80% of the test cases of the last question to qualify for the last round.

Q1. Polymorphism and types of polymorphism.
Ans. 
Polymorphism is the ability of an object to take on many forms. Types include compile-time, runtime, and ad-hoc polymorphism.
• Compile-time polymorphism is achieved through function overloading and templates.

• Runtime polymorphism is achieved through inheritance and virtual functions.

• Ad-hoc polymorphism is achieved through operator overloading and function templates.

• Polymorphism allows for code reusability and flexibility ...read more
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Q2. Relational databases to which I said I had no idea.
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Q3. Binary tree traversal quesiton.
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Q4. Doubly linked list traversal question.
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Q5. Asked about projects.
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Q1. Buy and sell stocks 1
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Q2. Buy and sell stocks 2.
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Q3. An easy puzzle in which the interviewer tries to trick me with my answer. Be confident.
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Q1. String hashing problem, which I solved with KMP using O(n3) solution.
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Q2. Contributions to open source communities.
Ans. 
Contributed to open source communities by developing and maintaining projects.
• Developed and maintained a Python package for data analysis and visualization

• Contributed to a popular JavaScript library by fixing bugs and adding new features

• Participated in open source hackathons and contributed to various projects

• Provided support and guidance to new contributors in the community
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Q3. JEE Mains rank, KVPY rank.
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Q1. Full Java deep knowledge including oops concepts then rest APIs then have some basic knowledge of microservices then spring boot all the things have mastery
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Q1. What is fast wrto performance?hashmap or treemap and why
Ans. 
HashMap is faster than TreeMap wrto performance due to its constant time complexity for most operations.
• HashMap has O(1) time complexity for most operations while TreeMap has O(log n) time complexity.

• HashMap is implemented using an array of buckets while TreeMap is implemented using a Red-Black Tree.

• HashMap is preferred for frequent read operations while TreeMap is preferred for frequent write operations.

• HashMap is uno...read more
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Q2. Can I write a try catch block inside a catch Block
Ans. 
Yes, it is possible to write a try catch block inside a catch block.
• This is called nested try-catch block.

• It is useful when we want to handle different types of exceptions in different ways.

• Example: try { //code } catch (ExceptionType1 e1) { try { //code } catch (ExceptionType2 e2) { //code } } }

• It is important to avoid excessive nesting as it can make the code difficult to read and maintain.
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Q3. Are exceptions can be written in a catch block seperated by commas,?
Ans. 
Yes, multiple exceptions can be caught in a single catch block separated by commas.
• Multiple exceptions can be caught in a single catch block separated by commas.

• This can be useful when handling different types of exceptions in a similar way.

• For example: catch (IOException | SQLException ex) { // handle exception }
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Q4. Hashmap internal working
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Q1. Why this and what all offers you are having It was a normal telephone call
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