Unicommerce Esolutions Senior Software Engineer Interview Questions and Answers

Dsa and algorithms are mostly asked

Q1. Systems designs questions trick
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Design notify me feature of Flipkart

DSA problems and lld question of splitwise

2 dsa questions need to be implemented in 1hr

Q1. Projects you have worked on. 1. vector implementation in C++
Ans. 
Implemented vector data structure in C++
• Used templates to create a generic vector class

• Implemented basic vector operations like push, pop, insert, erase

• Optimized vector resizing by using exponential growth

• Used iterators to traverse the vector elements

• Implemented vector algorithms like sort and binary search
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Q1. Compensation, expected and other document submitting.
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It started with basic introduction, than move ahead with Java, Spring boot question in the end, he asked one leetcode medium question based on DP . Ques : Find a minimum number of jumps required to reach the end of the array, and each index , it can jump arr[index] time at max, you need to calculate minimum number of steps required to reach at the end.

Q1. DS Algo type questions, string manipulation etc was asked and explored with more detailed questions
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Q1. In depth android, kotlin discussions and high level mapping questions
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Q1. General managerial questions and working agreements type discussion
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Q1. Api optimisations, query optimisations, how to keep code more extensible, scalable etc
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Q1. Questions related to designing around redis
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Q1. Core Java Related question Like , what is constructor, Java Collection, opps concept, Spring boot,some question from e-commerce domain.
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Q2. What is the Java code to remove duplicate characters from an array?
Ans. 
Use a HashSet to remove duplicate characters from an array of strings in Java.
• Create a HashSet to store unique characters.

• Iterate through each string in the array and convert it to a char array.

• Add each character to the HashSet, as it will automatically remove duplicates.

• Convert the HashSet back to a string array to get the result.
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