UKG Software Engineer Interview Questions, Process, and Tips

The coding test consists of multiple-choice questions and one medium-hard level coding question.

Q1. Given three jugs with different capacities and no measuring tools, how can you measure out a specific amount of water using the jugs you have?
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Q2. What is the angle between the minute and hour hand of a clock at 3:45?
Ans. 
The angle between the minute and hour hand of a clock at 3:45 is 157.5 degrees.
• Calculate the angle formed by the hour hand from 12 o'clock position to 3:45 position (135 degrees)

• Calculate the angle formed by the minute hand from 12 o'clock position to 3:45 position (22.5 degrees)

• Subtract the smaller angle from the larger angle to get the angle between the two hands (157.5 degrees)
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Q3. What is indexing in Database Management Systems (DBMS)?
Ans. 
Indexing in DBMS is a technique used to improve the performance of queries by allowing faster retrieval of data.
• Indexes are data structures that store a small portion of the data set in an easily searchable format.

• They help in speeding up the data retrieval process by reducing the number of disk accesses needed.

• Indexes can be created on one or more columns of a table to improve the performance of SELECT queries.

• Example...read more
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Q4. What is the lifecycle of a React component?
Ans. 
The lifecycle of a React component includes mounting, updating, and unmounting phases.
• Mounting phase: constructor, render, componentDidMount

• Updating phase: shouldComponentUpdate, render, componentDidUpdate

• Unmounting phase: componentWillUnmount
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Q5. How you delete entry in mongodb database
Ans. 
To delete an entry in MongoDB database, you can use the deleteOne() or deleteMany() methods.
• Use deleteOne() method to delete a single document based on a specific condition

• Use deleteMany() method to delete multiple documents based on a specific condition

• Make sure to specify the filter criteria to accurately delete the desired entry
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3 questions were there

Q1. Basic questions
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Q2. Os, dbms, core concept of cs
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Q1. Core concept of cs
Ans. 
Core concept of computer science is the study of algorithms and data structures.
• Algorithms are step-by-step procedures for solving problems.

• Data structures are ways to organize and store data efficiently.

• Examples include sorting algorithms like bubble sort and data structures like arrays and linked lists.
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A dsa question is asked in exam

Q1. What are pillars of Oops?
Ans. 
The pillars of Oops are Inheritance, Encapsulation, Polymorphism, and Abstraction.
• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation restricts access to certain components within a class, protecting the data from outside interference.

• Polymorphism allows objects to be treated as instances of their parent class, enabling flexibility in code.

• Abstraction hides the complex impleme...read more
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Q2. Given an array, print k number of most repeating integers
Ans. 
Print k most repeating integers from an array
• Create a hashmap to store the frequency of each integer in the array

• Sort the hashmap based on frequency in descending order

• Print the first k keys from the sorted hashmap
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Q1. Reverse the individual strings from big string with spaces
Ans. 
Reverse individual strings in a big string with spaces
• Split the big string into an array of strings using spaces as delimiter

• Reverse each individual string in the array

• Join the reversed strings back together with spaces in between
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Q2. Find duplicate from array
Ans. 
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
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