United Overseas Bank Technical Architect Interview Questions and Answers

There was basic GD topic

Q1. Google form was shared in which 15 questions were there and 3 were apti questions (work ,time ,speed) and others were from java programming and the time given was 2 hours.
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Q1. In this only you will be asked theoretical questions like DBMS, JAVA, Programming, Your Project for programming he will ask only logic and will not ask you to code.
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Q1. Count the number of words and their frequency
Ans. 
Count the number of words and their frequency
• Split the given text into words using whitespace as delimiter

• Create a dictionary to store the word frequency

• Iterate through each word and update the frequency in the dictionary

• Return the dictionary with word frequency
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Q2. Count frequency of characters.
Ans. 
Count the frequency of characters in a given string.
• Iterate through the string and use a hash map to store the count of each character.

• Initialize the count of each character to 0 and increment it as you encounter the character.

• Finally, iterate through the hash map to get the frequency of each character.
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Q3. Reversing the array
Ans. 
Reverses an array of strings
• Use a loop to iterate through half of the array

• Swap the elements at the current index with the corresponding element from the end of the array
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Q4. Implementing the comparator function for sorting
Ans. 
Implementing the comparator function for sorting an array of strings.
• Use the built-in sort() function in most programming languages.

• Define a custom comparator function that compares two strings.

• Return a negative value if the first string should come before the second, a positive value if it should come after, and 0 if they are equal.

• Example: ['apple', 'banana', 'cherry'] can be sorted in alphabetical order using the co
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Topic: Online vs Offline Education.

They gave us 8 coding problems and instructed us to solve 5 within a time limit of 1 hour and 30 minutes; all problems were from the easy and medium on LeetCode.

Q1. Data Structures and Algorithms (DSA), time complexity, and the explanation of code written during the coding round.
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Q2. Question from the Core java.
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Q1. In-depth question from DSA like implement linked-list and stack, questions from Tree and linear and binary search.
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Q2. Explanation of college projects and questions from resume.
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Q1. Simple HR questions.
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Asked about the SQL and python.

Q1. Told about the Offered role responsibilities.
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Q2. Ask about the previous work experience.
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Mostly Excel based, and they see if your answers are logical or not!

If you have visualization like PowerBi or Tableau Project then they will ask to explain and share details!

Q1. What you know about mensa and all!
Ans. 
Mensa is an international high IQ society that provides a forum for intellectual exchange among its members.
• Mensa was founded in 1946 in the UK by Roland Berrill and Dr. Lance Ware.

• To join Mensa, individuals must score in the top 2% of the general population on a standardized intelligence test.

• Mensa has members in more than 100 countries around the world.

• The organization hosts various events, gatherings, and activities...read more
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Aptitude test was the mixture of common aptitude questions along with sql, basic javascript and java language basic questions and couple of simple coding questions like febinachi series, palindrom pattern etc .

Q1. They started from basic of java and some frameworks like springboot and then moved to advance of these topics.
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Q2. Springboot annotations Opps concept run-time and compile time polimorphisam SQL quesries for Select and Joins
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Q1. Level 2 interview from the same topics along with abstraction and interface Constructor overriding is possible or not? dependency injection
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Q2. Ways to create object in java.
Ans. 
Objects in Java can be created using the 'new' keyword, constructors, and factory methods.
• Use the 'new' keyword followed by the class name to create an object

• Objects can also be created using constructors to initialize the object's state

• Factory methods can be used to create objects without exposing the instantiation logic
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3 coding questions

Q1. Design a Time Series Database
Ans. 
A time series database stores data points with timestamps for efficient retrieval and analysis.
• Choose a suitable data model for the database

• Use a time-based partitioning scheme for efficient data retrieval

• Implement compression techniques to reduce storage requirements

• Support for querying and analyzing time-based data

• Ensure data consistency and durability

• Consider scalability and high availability

• Examples: InfluxDB, Time
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2 coding questions based on DSA.

Q1. Easy coding problem.
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Q2. Medium coding problem.
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