Namshi Senior Software Engineer Interview Questions and Answers

Q1. Design Search Systems
Ans. 
Designing search systems involves creating efficient algorithms and data structures to quickly retrieve relevant information.
• Understand the data structure of the search system (e.g. inverted index, trie)

• Implement efficient search algorithms (e.g. binary search, hash tables)

• Consider scalability and performance optimization techniques (e.g. caching, indexing)

• Include user-friendly features like autocomplete and spell corr...read more
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Basic coding test from hackerearth.

Q1. Insert node in BST
Ans. 
Insert a node in a Binary Search Tree (BST)
• Start at the root node and compare the value of the node to be inserted with the current node

• If the value is less than the current node, move to the left child. If greater, move to the right child

• Repeat the process until reaching a leaf node, then insert the new node as a left or right child
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Q2. Design Lift system
Ans. 
Design a lift system for efficient vertical transportation
• Consider the number of floors in the building

• Include safety features like emergency stop button

• Optimize for speed and energy efficiency

• Implement a user-friendly interface for passengers
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Q1. About mobile testing and logs
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Q1. Fundamentals and Basics of android, projects you are worked on.
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It was sort of pair programming where you will be told to implement some feature. Here they check your coding style, your approach and the architecture you follow.

Q1. Advanced android questions were asked and some scenario based questions.
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Q1. It was managerial round, most discussion were on my projects and past experience.
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Anagram, Pythagorean triplets

Js coding test with modifications

Q1. Rotate matrix by 90 degree
Ans. 
Rotate a matrix by 90 degrees.
• Transpose the matrix

• Reverse each row of the transposed matrix
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Q2. Longest substring with unique characters
Ans. 
The question asks for finding the longest substring in a given string that contains only unique characters.
• Iterate through the string and keep track of the current substring

• Use a set to check for duplicate characters

• Update the longest substring if a longer one is found
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Q1. A trie question
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Ecommerce hight level design