Revature Interview Questions, Process, and Tips

1. String input="aaabccccbbbdd";
Find how many a, b, c, d are there in the string. Did using java streams.
2.HashMaphm=new HashMap();
hm.put(55,"B");
hm.put(33,"Z");
hm.put(44,"M");
hm.put(99,"I");
hm.put(88,"X");
Sort this hashmap based on values(B, I, M, X, Z). Should be done using java streams.
3.List lists = Arrays.asList(Arrays.asList(1,2,3), Arrays.asList(2,3,4,5), Arrays.asList(5,7,8));
Question was wrong actually. But expectation is to do flatmap and print without duplicates.
Query:
get 3rd highest salary from employee table

Assignment includes Aptitude, Reasoning, 1 Coding Question (Medium Level), 1 SQL Query based Q and an essay writing (3 essays in 15 minutes each of atleast 200 Words).

Q1. Introduction and why not Java?
Ans. 
Java is a popular programming language, but other languages may be more suitable for certain projects or preferences.
• Java is a statically typed language, which may lead to more verbose code compared to dynamically typed languages like Python or JavaScript.

• Some developers prefer languages like Python for data analysis and machine learning projects due to its extensive libraries and ease of use.

• For web development, JavaS...read more
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Q2. Tell about JDBC,JVM, JDK, JRE, Servlets etc. only a bit as i am not from java background.
Ans. 
JDBC, JVM, JDK, JRE, and Servlets are key components in Java development.
• JDBC (Java Database Connectivity) is used to connect Java applications to databases.

• JVM (Java Virtual Machine) is the runtime environment for Java programs.

• JDK (Java Development Kit) is a software development kit for developing Java applications.

• JRE (Java Runtime Environment) is required to run Java applications on a computer.

• Servlets are Java cla...read more
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Q3. Tell about OOPS in C++ (Static Keyword, 4 Pillars,Class vs Struct).
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Q4. Code on online compiler for Overloading and overriding of functions.
Ans. 
Overloading and overriding are two important concepts in object-oriented programming that allow functions to have multiple definitions.
• Overloading: defining multiple functions with the same name but different parameters

• Example: int add(int a, int b) and int add(int a, int b, int c)

• Overriding: redefining a function in a subclass that is already defined in the superclass

• Example: superclass has a method display() and subc
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Q5. 4 SQL Queries based on simple concepts and Syntax based Q on View, Alter, Create Db etc.
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Q6. Eager to learn Java and why choose MongoDb.
Ans. 
I am eager to learn Java because of its widespread use in software development. I choose MongoDB for its flexibility and scalability in handling large volumes of data.
• Java is a popular programming language used for developing a wide range of applications, from web to mobile.

• Learning Java will open up opportunities for me to work on various projects and collaborate with other developers.

• MongoDB is a NoSQL database known...read more
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Q1. Introduction about myself
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Q2. What you know about the role
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Q3. What you know about revature working and clients.
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Q4. About salary structure and willing to relocate.
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Q5. About siblings and fight with them
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Q6. Will tell the results after 3 Weeks and that's it.
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Assusual apti questions from every topics

1. 1 coding Question we can use java, python etc to solve and
2. another 1 sql question

One question based on any one data structure (in my case I solved stack &queue combinely)

Q1. They ask about Ur background qualifications and verify
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Q2. And then explain the process of company and ask everything is ok for us like bond etc
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Q3. Then sheduled interview on the next day
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Q1. She(hr) introduced herself
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Q2. Then she asked me to introduce myself
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Q3. What are the programming languages u know ( I said I'm strong in java)
Ans. 
I am strong in Java programming language.
• Proficient in Java programming language

• Experience in developing applications using Java

• Knowledge of Java frameworks like Spring and Hibernate
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Q4. Rate Urself in it out of 5
Ans. 
I rate myself 4 out of 5 in IT skills.
• Proficient in programming languages such as Java, Python, and C++

• Experienced in software development and debugging

• Familiar with database management systems like MySQL and MongoDB
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Q5. She asked me to explain lambda expressions in java
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Q6. Explain detaily about Four pillars of oops
Ans. 
The four pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allows a class to inherit properties and behavior from another class.

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

• Abstraction: Hides the complex implementation details and only shows the necessary features.
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Q7. Share Ur screen and get this output (pattern program)
Ans. 
Print a specific pattern using loops
• Use nested loops to print the desired pattern

• Increment the number of characters printed in each row

• Adjust the spacing to create the desired pattern
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Q8. Shorterm and long-term goals
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Q9. If your assigned to a task how can you complete it
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Q10. Exception handling concept (she specifically asked about throw, throws, finally keyword)
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Q11. Explain about Static keyword
Ans. 
Static keyword is used in programming languages to declare variables, functions, or classes that are shared among all instances of a class or are only accessible within a specific scope.
• Static variables retain their values between function calls

• Static functions can only be called within the same file

• Static classes cannot be instantiated and are used for grouping related methods and properties
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Q1. Diff between flow and flow action
Ans. 
Flow is a sequence of steps in a process, while flow action is a specific action within a flow.
• Flow is a series of connected steps that define a process in Pega.

• Flow action is a specific action within a flow, such as creating a case or updating data.

• Flows can contain multiple flow actions, each representing a specific task or decision point.

• Flow actions can be configured to perform different actions based on conditions
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Q2. Diff between JS and QP
Ans. 
JS stands for JavaScript, a programming language used for web development. QP stands for Query Parser, a tool used for parsing and analyzing queries.
• JS is a programming language used for web development.

• QP is a tool used for parsing and analyzing queries.

• JS is used for client-side scripting, while QP is used for query parsing and analysis.

• Examples: JavaScript is used to create interactive web pages, while Query Parser ...read more
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Q1. Explain Remote tracer
Ans. 
Remote tracer is a tool used in Pega to remotely debug and trace the execution of rules and activities in a system.
• Remote tracer allows developers to monitor and analyze the flow of rules and activities in real-time.

• It helps in identifying performance bottlenecks, debugging issues, and optimizing rule execution.

• Developers can set breakpoints, watch variables, and step through the execution flow remotely.

• Remote tracer c...read more
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Q2. Explain integrations in pega
Ans. 
Integrations in Pega refer to connecting Pega applications with external systems to exchange data and functionality.
• Integrations can be achieved using connectors, services, and APIs.

• Pega provides out-of-the-box connectors for popular systems like Salesforce, SAP, and Microsoft.

• Integration can also be done through REST and SOAP services.

• Data mapping and transformation are important aspects of integrations in Pega.
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