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UKG Interview Questions and Answers for Experienced
38 Interview questions
To identify a parent node in a tree, traverse the structure and track relationships between nodes.
Use a depth-first search (DFS) or breadth-first search (BFS) to traverse the tree.
Maintain a reference to the parent node while traversing.
In a binary tree, each node has at most two children, making it easier to track parents.
Example: In a tree with nodes A (root), B, and C, if you are at B, A is the parent.
Stacks can be implemented using queues and vice versa through specific enqueue and dequeue operations.
To implement a stack using two queues, use one queue for enqueueing and the other for dequeueing elements.
When pushing an element onto the stack, enqueue it to the first queue, then move all elements from the first queue to the second queue.
Finally, swap the names of the two queues. This ensures the last pushed el...
To determine if a linked list is circular, use Floyd's Cycle Detection algorithm (Tortoise and Hare).
Use two pointers: 'slow' moves one step, 'fast' moves two steps.
If the linked list is circular, 'slow' and 'fast' will meet at some point.
If 'fast' reaches the end (null), the list is not circular.
Example: For a circular list 1 -> 2 -> 3 -> 4 -> 2 (points back to 2), 'slow' and 'fast' will meet at 2.
I have extensive experience working with large datasets in various projects.
Worked with large datasets in previous roles
Utilized tools like SQL, Python, and R for data analysis
Performed data cleaning, transformation, and visualization on large datasets
Built predictive models using big data
What people are saying about UKG
An automation framework is a set of guidelines, rules, and tools used for automated testing of software applications.
Automation frameworks provide a structured way to automate testing processes, making it easier to write and maintain test scripts.
They help in reducing manual intervention, increasing test coverage, and improving the efficiency of the testing process.
Examples of automation frameworks include Seleniu...
Use a stack to check if a string is balanced without push and pop methods.
Create an empty array to act as a stack
Iterate through each character in the string
If the character is an opening bracket, add it to the stack
If the character is a closing bracket, check if the stack is empty or the top element is not the corresponding opening bracket
If the stack is empty or the top element does not match, the string is not ...
Reverse each word in a given string while maintaining the original order of words.
Split the string by spaces to get individual words. Example: 'Hello World' -> ['Hello', 'World']
Reverse each word in the array. Example: ['Hello', 'World'] -> ['olleH', 'dlroW']
Join the reversed words back into a single string with spaces. Example: ['olleH', 'dlroW'] -> 'olleH dlroW'
Find duplicates in an array of strings
Iterate through the array and store each element in a hash set
If an element is already in the hash set, it is a duplicate
Return a list of all duplicates found
psvm in Java stands for public static void main, which is the entry point for a Java program.
psvm is the method signature for the main method in Java programs.
It is used to start the execution of a Java program.
It must be declared as public, static, and void.
It takes an array of strings as an argument, which can be used to pass command line arguments.
A collection is a group of related objects or data items that are stored together.
Collections can be implemented using data structures like arrays, lists, sets, maps, etc.
Collections allow for easy manipulation and organization of data.
Examples of collections include arrays of integers, lists of strings, sets of unique values, and maps of key-value pairs.
UKG Interview Experiences for Experienced
50 interviews found
Anonymous
(1 Question)
- Q1. What is an automation framework, and how is it used in software development?
- Ans.
An automation framework is a set of guidelines, rules, and tools used for automated testing of software applications.
Automation frameworks provide a structured way to automate testing processes, making it easier to write and maintain test scripts.
They help in reducing manual intervention, increasing test coverage, and improving the efficiency of the testing process.
Examples of automation frameworks include Selenium, Ap...
(1 Question)
- Q1. What is the program for checking whether a string is balanced or not, without using push and pop methods?
- Ans.
Use a stack to check if a string is balanced without push and pop methods.
Create an empty array to act as a stack
Iterate through each character in the string
If the character is an opening bracket, add it to the stack
If the character is a closing bracket, check if the stack is empty or the top element is not the corresponding opening bracket
If the stack is empty or the top element does not match, the string is not balan...
(1 Question)
- Q1. General discussion jobs realated.
Selected
Hacker rank exam, 2 DSA coding questions
(2 Questions)
- Q1. Backend questions on spring boot
- Q2. Angular routing and service
(2 Questions)
- Q1. Cultural fit question
- Q2. And prior job experience and mental ability test
Selected
I appeared for an interview in Aug 2024.
(2 Questions)
- Q1. Basics of US Payroll and about taxes in different states with their rates.
- Q2. Garnishments basic and employee's leaves and pto exceptions.
- Ans.
Garnishments are deductions from an employee's wages to satisfy a debt or legal obligation. Leaves and PTO exceptions refer to situations where garnishments may not apply.
Garnishments are court-ordered deductions from an employee's wages to pay off debts such as child support or tax obligations.
Employee leaves and PTO exceptions may impact garnishment calculations, as the employee may not be receiving their full wages ...
(2 Questions)
- Q1. Briefing about self and worked experience
- Q2. Psychological questions, personality test by senior manager.
Interview Preparation Tips
Anshit Kumar
(2 Questions)
- Q1. Explain psvm in java
- Ans.
psvm in Java stands for public static void main, which is the entry point for a Java program.
psvm is the method signature for the main method in Java programs.
It is used to start the execution of a Java program.
It must be declared as public, static, and void.
It takes an array of strings as an argument, which can be used to pass command line arguments.
- Q2. Explain collection
- Ans.
A collection is a group of related objects or data items that are stored together.
Collections can be implemented using data structures like arrays, lists, sets, maps, etc.
Collections allow for easy manipulation and organization of data.
Examples of collections include arrays of integers, lists of strings, sets of unique values, and maps of key-value pairs.
Skills evaluated in this interview
I applied via Approached by Company and was interviewed in Oct 2024.Ā There was 1 interview round.
2 DSA Question, 1 Question on Git
Interview Preparation Tips
apoorva singh
Selected
I appeared for an interview in Feb 2025.
(1 Question)
- Q1. How frequently have you worked with large datasets?
- Ans.
I have extensive experience working with large datasets in various projects.
Worked with large datasets in previous roles
Utilized tools like SQL, Python, and R for data analysis
Performed data cleaning, transformation, and visualization on large datasets
Built predictive models using big data
Selected
I appeared for an interview in Mar 2025, where I was asked the following questions.
- Q1. Are you familiar with U.S. payroll and garnishments?
- Q2. How proficient are you in performing calculations in various situations?
Interview Preparation Tips
I applied via Naukri.com and was interviewed in May 2024.Ā There was 1 interview round.
(5 Questions)
- Q1. Singliton class
- Ans.
A Singleton class ensures a class has only one instance and provides a global point of access to it.
Singleton pattern restricts instantiation of a class to one object.
Commonly used in logging, driver objects, caching, and thread pools.
Example: Database connection pool where only one connection is needed.
Implemented using private constructors and static methods.
Thread-safe implementation can be achieved using synchroniz...
- Q2. Immutable class
- Q3. Most occured letter in string ? Problem to code
- Ans.
Find the most occurred letter in a given string.
Iterate through the string and count the occurrences of each letter
Store the counts in a map or array
Find the letter with the highest count
- Q4. Global exception handler ?
- Ans.
A global exception handler in Java manages exceptions across the application, ensuring consistent error handling and user feedback.
Centralizes exception handling for all controllers in a Spring application.
Uses @ControllerAdvice annotation to define a global exception handler.
Can return custom error responses in a consistent format.
Example: @ExceptionHandler(NullPointerException.class) to handle null pointer exceptions...
- Q5. Design principle?
- Ans.
Design principle is a set of guidelines that help software developers create maintainable and scalable code.
Design principles help in creating code that is easy to understand, modify, and maintain.
Examples of design principles include SOLID principles, DRY (Don't Repeat Yourself), KISS (Keep It Simple, Stupid), and YAGNI (You Aren't Gonna Need It).
Interview Preparation Tips
Skills evaluated in this interview
Selected
I appeared for an interview in Feb 2025, where I was asked the following questions.
- Q1. Dsa was asked
- Q2. Projects and puzzle
Selected
I appeared for an interview in Jan 2025, where I was asked the following questions.
- Q1. Leadership Level strategy style and transformation .
- Ans.
Effective leadership in cyber security requires strategic vision, adaptability, and a focus on transformation to mitigate risks.
Adopt a proactive approach: Implement threat intelligence to anticipate cyber threats before they occur.
Foster a culture of security: Engage all employees in security training to create a security-first mindset across the organization.
Leverage technology: Utilize AI and machine learning for re...
- Q2. More on skills , my current role and future vision
UKG Interview FAQs
Some of the top questions asked at the UKG interview for experienced candidates -
The duration of UKG interview process can vary, but typically it takes about less than 2 weeks to complete.
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