Lentra AI Software Developer Interview Questions and Answers

Q1. Technical question regarding js
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- There were 2 had questions majorly about DP, code link was shared.

Q1. Asked to solve a medium level leetcode question. Basics of Java, Spring Boot
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Q1. A liitle bit on design and more in-depth questions in java and Spring
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The aptitude round consists of approx 20 q's, out of which half the q's were based on LR and aptitude and half based on computer fundamentals.

The coding test consisted of 4 q's. The selection criteria was to complete at least 3 q's.

Q1. Tell me something about yourself
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I am a passionate software engineer with experience in developing web applications using various technologies.
• Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

• Proficient in backend development with Node.js and databases like MongoDB and MySQL

• Familiar with version control systems like Git and project management tools like Jira
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Q2. Questions on React.js, as i had build projects using react.js.
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It was a simple assignment where you needed to implement a Django app from a well laid out documentation.

Q1. Binary Search Tree - Two nodes are swapped in a Binary Search tree and then fix them so that the tree becomes a valid BST
Ans. 
Fix two swapped nodes in a Binary Search Tree to make it valid
• Identify the two nodes that are swapped incorrectly

• Perform an inorder traversal to find the nodes that are not in ascending order

• Swap the values of the incorrectly swapped nodes to fix the BST
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Q1. They concentrate on Core java
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Q2. 1. Polymorphism 2. Strings 3. hashMap implementation
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Q1. An medium level hld question
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Q1. Explain OOPS Concept ?
Ans. 
OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.
• OOPS focuses on creating objects that interact with each other to solve problems.

• It involves concepts like classes, objects, inheritance, polymorphism, and encapsulation.

• For example, a class 'Car' can have objects like 'Toyota', 'Honda', etc., each with their own properties and methods.

• Inheritan...read more
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