UKG SDE Interview Questions and Answers

Online coding test with 2 coding questions

Q1. What is storage differnece for files in ram
Ans. 
Files in RAM are stored temporarily for quick access by the CPU.
• RAM (Random Access Memory) is volatile memory used for temporary storage of data and instructions.

• Files stored in RAM are accessed much faster than files stored on a hard drive.

• RAM is cleared when the computer is turned off, so files stored in RAM are not persistent.

• Examples of files stored in RAM include open applications, running processes, and cached da
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DSA,COMPUTER FUNDAMENTALS

Q1. TELL ABOUT TREE TRAVERSALS
Ans. 
Tree traversals are methods used to visit each node in a tree data structure in a specific order.
• Inorder traversal: Visit left subtree, then root, then right subtree

• Preorder traversal: Visit root, then left subtree, then right subtree

• Postorder traversal: Visit left subtree, then right subtree, then root
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Aptitude is pretty easy

Need to be good in communication skills

Q1. Focused more on Technical skills and behavioral + tech
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Q1. Resume and project based questions
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Q1. Current work and Salary
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Hackerearth problem on reversing the string & one more array question

Q1. Reverse the string
Ans. 
Reverse a given string
• Use built-in functions like reverse() in Python

• Iterate through the string in reverse order and append characters to a new string

• Use stack data structure to reverse the string
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Q2. SQL based windowing function
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Coding round of 2 questions of medium level

Easy to medium (30 mins, offline)

Q1. 1. search algorithm 2. sorting
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Q1. Basic of Oops and Garbage collection
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Q1. Code Review in c# and also with some network regarding questions
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Q1. How to read files in pandas?
Ans. 
Pandas can read various file formats including CSV, Excel, JSON, HTML, and SQL.
• Use pandas.read_csv() to read CSV files

• Use pandas.read_excel() to read Excel files

• Use pandas.read_json() to read JSON files

• Use pandas.read_html() to read HTML tables

• Use pandas.read_sql() to read SQL tables

• Specify the file path or URL as the argument

• Additional parameters can be used to customize the reading process
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Q2. How to use lambda function
Ans. 
Lambda functions are anonymous functions that can be used to perform a single task or operation.
• Lambda functions are defined using the lambda keyword.

• They can take any number of arguments but can only have one expression.

• Lambda functions are often used as arguments for higher-order functions.

• Example: lambda x: x**2 defines a lambda function that squares its input.

• Example: sorted(my_list, key=lambda x: x[1]) sorts a lis...read more
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