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PureSoftware Pega Developer Interview Questions and Answers
PureSoftware Pega Developer Interview Experiences
1 interview found
I applied via Naukri.com and was interviewed in Jul 2022. There was 1 interview round.
(2 Questions)
- Q1. Difference between constraints and Declare trigger
- Ans.
Constraints are used to restrict user input while Declare triggers are used to automate actions based on certain events.
Constraints are used to validate user input and ensure it meets certain criteria.
Declare triggers are used to automate actions based on certain events, such as when a new record is created or updated.
Constraints are defined at the property level while Declare triggers are defined at the class level.
Co...
- Q2. What is forward chaining and backward chaining
- Ans.
Forward and backward chaining are two types of reasoning used in artificial intelligence and expert systems.
Forward chaining starts with the available data and uses rules to infer new conclusions.
Backward chaining starts with a goal and works backwards to find the data and rules needed to support that goal.
Forward chaining is used in rule-based systems, while backward chaining is used in goal-based systems.
Examples of ...
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I was interviewed in Dec 2024.
(6 Questions)
- Q1. Implement a custom stack that allows fetching the minimum element in constant time, O(1).
- Ans.
Custom stack with constant time access to minimum element
Use two stacks - one to store elements and another to store minimum values
When pushing an element, compare with top of min stack and push the smaller value
When popping an element, pop from both stacks
Access minimum element in O(1) time by peeking at top of min stack
- Q2. How can one create an immutable class named Employee with fields for name and hobbies defined as List
? - Ans.
To create an immutable class named Employee with fields for name and hobbies defined as List<String>, use private final fields and return new instances in getters.
Use private final fields for name and hobbies in the Employee class
Provide a constructor to initialize the fields
Return new instances or unmodifiable lists in the getters to ensure immutability
- Q3. What changes are required in the Employee class to use it as a key for a HashMap?
- Ans.
Add hashCode() and equals() methods to Employee class.
Override hashCode() method to generate a unique hash code for each Employee object.
Override equals() method to compare Employee objects based on their attributes.
Ensure that the attributes used in hashCode() and equals() methods are immutable.
Example: Add id, name, and department attributes to Employee class and override hashCode() and equals() methods based on thes
- Q4. What is the implementation of the singleton design pattern?
- Ans.
Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
Create a private static instance of the class within the class itself.
Provide a public static method to access the instance, creating it if necessary.
Ensure the constructor of the class is private to prevent instantiation from outside the class.
Use lazy initialization to create the instance only when needed.
Thread...
- Q5. Different ways to create a thread
- Ans.
Ways to create a thread in Java include extending the Thread class, implementing the Runnable interface, and using Java 8's lambda expressions.
Extend the Thread class and override the run() method
Implement the Runnable interface and pass it to a Thread object
Use Java 8's lambda expressions with the Executor framework
- Q6. What are the SOLID principles in software design, and can you provide examples for each?
- Ans.
SOLID principles are a set of five design principles in object-oriented programming to make software more maintainable, flexible, and scalable.
Single Responsibility Principle (SRP) - A class should have only one reason to change. Example: A class that handles user authentication should not also handle database operations.
Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modific...
(5 Questions)
- Q1. What is the concept of Object-Oriented Programming (OOP) and can you provide an example?
- Ans.
OOP is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.
OOP focuses on creating objects that interact with each other to solve a problem.
Encapsulation is a key concept in OOP, where data is kept within an object and only accessible through its methods.
Inheritance allows objects to inherit attributes and methods from parent classes.
Po...
- Q2. How do threads communicate with each other in Java?
- Ans.
Threads communicate in Java through shared memory or message passing.
Threads can communicate through shared variables in memory.
Threads can communicate through synchronized methods or blocks.
Threads can communicate through wait(), notify(), and notifyAll() methods.
Threads can communicate through message passing using classes like BlockingQueue or ExecutorService.
- Q3. Write a program to reverse a linked list.
- Ans.
Program to reverse a linked list
Create a new linked list to store the reversed elements
Traverse the original linked list and insert each node at the beginning of the new list
Update the head of the new list as the last node of the original list
- Q4. What is the difference between string literals and the string pool?
- Ans.
String literals are constant strings defined in code, while the string pool is a memory area where unique string objects are stored.
String literals are created using double quotes, while string pool objects are created using the 'new' keyword.
String literals are stored in the string pool to conserve memory and improve performance.
String literals are automatically interned by the JVM, while string pool objects need to b
- Q5. What is the program to print the 90-degree rotated view of a 2D array?
- Ans.
Program to print the 90-degree rotated view of a 2D array.
Iterate through each column in reverse order and print the corresponding row elements.
Repeat this process for all columns to get the rotated view of the 2D array.
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I applied via Referral and was interviewed in Oct 2024. There was 1 interview round.
(3 Questions)
- Q1. Given an array of non-negative integers.Find the length of the longest subsequence such that elements in the subsequence are contiguous integers. The consecutive numbers can be in any order. Example n=7 nu...
- Ans.
Find the length of the longest subsequence of contiguous integers in an array.
Sort the array
Iterate through the array and check for consecutive integers
Keep track of the longest subsequence found
- Q2. Get list of pincodes from these objects Employee{ id Long, name String, Addresses : List } Addresses{ houseNo long, pindcode long, state String, country String, } Ans. Use flatMap to flatten and then use m...
- Ans.
Use flatMap and map to extract list of pincodes from Employee objects
Use flatMap to flatten the list of Addresses in each Employee object
Use map to iterate over the flattened list and extract the pincodes
Example: employeeList.stream().flatMap(emp -> emp.getAddresses().stream()).map(address -> address.getPincode()).collect(Collectors.toList())
- Q3. What is Database Pooling, Hikari and its configurations. Java 8 to current enchancements and current java version Factory and Builder design patterns to explain and code Project expalantion and details, Cr...
- Ans.
Database pooling is a technique used to manage a pool of database connections for efficient resource utilization. HikariCP is a popular database connection pooling library in Java.
HikariCP is a high-performance database connection pooling library for Java applications.
It is known for its low latency and high throughput.
Configurations for HikariCP include settings such as maximum pool size, connection timeout, and idle ...
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Skills evaluated in this interview
(2 Questions)
- Q1. What is LMS ?
- Ans.
LMS stands for Learning Management System, a software application for the administration, documentation, tracking, reporting, and delivery of educational courses or training programs.
LMS helps organizations deliver online courses and training programs to employees or students.
It allows for the creation and management of courses, assessments, and learning materials.
LMS can track learner progress, generate reports, and p...
- Q2. What is shadow DOM
- Ans.
Shadow DOM is a way to encapsulate the styling and structure of a web component, preventing styles from leaking out or clashing with the rest of the page.
Shadow DOM allows for creating self-contained components with their own styles and markup
It helps in preventing styles from the main document affecting the component and vice versa
Shadow DOM can be created using the 'shadowRoot' property of an element
(2 Questions)
- Q1. What all exceptions you know ?
- Ans.
Some common exceptions in Salesforce development include DMLException, QueryException, and LimitException.
DMLException: Thrown when an error occurs while performing DML operations like insert, update, delete.
QueryException: Thrown when an error occurs while querying data from the database.
LimitException: Thrown when governor limits are exceeded, such as SOQL query limit or CPU time limit.
- Q2. Have you worked on integration ?
- Ans.
Yes, I have worked on integration in Salesforce development.
I have experience integrating Salesforce with external systems using REST and SOAP APIs.
I have worked on integrating Salesforce with third-party applications like MailChimp and DocuSign.
I have implemented custom integrations using tools like Salesforce Connect and MuleSoft.
I have experience with data mapping, transformation, and synchronization during integrat
(2 Questions)
- Q1. Why governor limits ?
- Ans.
Governor limits are in place to ensure efficient use of resources and prevent abuse in Salesforce platform.
Governor limits help in maintaining system performance and preventing monopolization of resources.
They ensure fair usage of resources among all users on the platform.
Examples include limits on number of records retrieved in a single query, number of SOQL queries executed, and CPU time consumed.
Governor limits also...
- Q2. What is challenge you faced ?
- Ans.
One challenge I faced was integrating a third-party API with Salesforce.
Had to understand the API documentation thoroughly
Encountered compatibility issues with Salesforce platform
Implemented custom code to bridge the gap between API and Salesforce
Skills evaluated in this interview
Selected
I was interviewed in Jan 2025.
Test will be in hacker rank there would be a difficulty level between easy to medium
(1 Question)
- Q1. Question will be from data structure and easy to medium level of the programming laanguage question
(1 Question)
- Q1. This is just to check your english ability
Selected
I applied via LinkedIn and was interviewed in Dec 2024. There was 1 interview round.
(2 Questions)
- Q1. Context api, js related qstns, simple programming qstn,
- Q2. Remove duplicates without using set.
- Ans.
Remove duplicates from array of strings without using set.
Iterate through the array and compare each element with all other elements to find duplicates.
Create a new array and add elements only if they are not already present in the new array.
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I applied via LinkedIn and was interviewed in Nov 2024. There was 1 interview round.
(3 Questions)
- Q1. What is JWT Authentication
- Q2. Design Patterns
- Q3. Different Types of Routing in MVC
Technology advantage or not
All aptitude topics,logical reasoning
(2 Questions)
- Q1. Oops,2 coding questions
- Q2. Palindrome,even number
(2 Questions)
- Q1. What do you know
- Q2. Do you have any questions
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Software Developer Interview Questions & Answers
Quantiphi Analytics Solutions Private Limited
Anonymous
posted on 4 Nov 2024
I applied via Approached by Company and was interviewed in Jun 2024. There were 3 interview rounds.
(3 Questions)
- Q1. REST API for User CRUD
- Ans.
Design a RESTful API for CRUD operations on user resources.
Use HTTP methods like GET, POST, PUT, DELETE for CRUD operations
Create endpoints like /users for listing all users, /users/{id} for specific user
Use status codes like 200 for success, 404 for not found, 400 for bad request
Implement authentication and authorization mechanisms for security
Include request and response body formats like JSON or XML
- Q2. Two Sum Leetcode problem
- Q3. Basic questions based on the candidate technical skills
(2 Questions)
- Q1. Basics to Intermediate level of questions based on the skills mentioned in the resume
- Q2. Projects related discussions
(1 Question)
- Q1. I was informed to upload the supporting documents. ( They rejected me after this eventhough all my documents are genuine )
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Skills evaluated in this interview
20 aptitude,20 comunication,4 program questions
General topics . topics about online class vs office line class
(1 Question)
- Q1. In this round also they mainly check communication.after that basic questions about the what you put on your resume
(1 Question)
- Q1. General round. In this round they told about the company and bond
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