UKG Sde1 Interview Questions and Answers

Q1. Internal working of hashmap
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Q2. What are collections
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Q3. What are design Patterns explain singleton design pattern
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Q4. What annotations did you use in spring boot. how @transaction annotation works
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Q1. Asked 2 puzzles
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Q2. What is vertical scaling and horizontal scaling
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Q1. Salary Discussion
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Q1. Coding question based on stacks
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Q2. Java and Spring Boot questions..too much grilling
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Q1. Large scale system design interview
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Two DSA questions related to Arrays & strings

Q1. Design URL shortener
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Design a URL shortener service with features like shortening, redirecting, tracking, handling collisions, and providing analytics.
• Use a hashing algorithm to generate unique short URLs from long URLs

• Store mappings of short URLs to original URLs in a database

• Implement a redirect mechanism to direct users to the original URL when accessing the short URL

• Track the number of times each short URL is accessed and store this da...read more
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HashMaps and String-based questions

Q1. The interview asked 2 coding questions: 1. 2-Sum 2. Largest Palindrome in a string Apart from this there were questions on real life OOPS principles
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Q1. This was a resume drill-down on projects/skills. It had CS fundamental questions along with OOPs questions
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Q1. It was a manager round having standard team based/ situation based leadership questions
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Q1. Standard HR questions- strength/weakness
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Q1. SOLID Principles
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Q1. Rate Limiter with possible test cases
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Rate limiter is a mechanism to control the rate of requests sent to a server
• Implement a sliding window algorithm to track the number of requests within a specific time frame

• Set a limit on the number of requests allowed per unit of time

• Return an error response when the limit is exceeded

• Test cases: 1. Send requests below the limit - should be successful. 2. Send requests above the limit - should receive an error response
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Q1. Rank teams based on some criteria
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Q1. Job scheduler system design round
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Q1. Project details question
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2 coding questions with difficulty level easy to medium and duration was 1hr in HackerEarth.

Q1. This round went very well, panelist asked basic coding questions and one logic question.
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Q2. 1. reverse a string 2. find the 2nd max value in a array 3. write a code for BST
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This JSON response provides answers to three interview questions for a Software Engineer position.
• To reverse a string, you can use built-in string manipulation functions or iterate through the string and swap characters from both ends.

• To find the 2nd max value in an array, you can sort the array in descending order and return the element at index 1.

• To write a code for a Binary Search Tree (BST), you need to define a No...read more
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Q1. This round is mostly based on my resume based question
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Q2. What projects have you done and asked about internship where I have worked recently.
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