Altair Engineering Senior Software Engineer Interview Questions and Answers

4 question asked medium and hard

1 question asked and oops concept

Q1. Normal question
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Q1. String coding question
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Q2. File operations
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Q1. Memory management cpp
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Q2. Solid principles
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Q1. Write a program which will take string and number of occurrences as a input. Find a character with same occurrences count in single interation.(multiples cases around this, not able to recall)
Ans. 
Program to find a character with same occurrences count in a string in a single iteration.
• Iterate through the string and keep track of character occurrences in a hashmap.

• Check for characters with the same occurrence count in the hashmap.

• Return the first character found with the same occurrence count.
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Q2. Graph traversal
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Q1. System design components discussed in detail with different scenarios
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Q1. Prepare standard conflict manager round questions like conflict resolution, team leading experience, best work delivered, standard practices etc
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Q1. What project worked on
Ans. 
I worked on a project to develop a web-based inventory management system for a retail company.
• Implemented user authentication and authorization features

• Designed database schema for storing product information

• Developed frontend using React and backend using Node.js

• Integrated payment gateway for online transactions
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Q2. Explain a scenario
Ans. 
Explaining a scenario in software development
• Scenario: A team is working on developing a new feature for a mobile app

• Discussing the requirements with the product owner and stakeholders

• Breaking down the feature into smaller tasks for the development team

• Assigning tasks to team members based on their expertise

• Regularly reviewing progress and making adjustments as needed
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Q1. AWS architecture in your current project
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Our project utilizes AWS architecture for scalability and reliability.
• We use EC2 instances for hosting our application servers.

• S3 buckets are used for storing and serving static assets.

• We leverage RDS for managing our relational database.

• Lambda functions are used for serverless computing tasks.

• CloudFront is utilized for content delivery network (CDN) to improve performance.

• We use CloudWatch for monitoring and logging.

• A...read more
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Q1. Add two linked list
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To add two linked lists, iterate through both lists simultaneously and add corresponding nodes, considering carry from previous addition.
• Create a dummy node to hold the result.

• Initialize current node to dummy node.

• Iterate through both lists, adding values and carry from previous addition.

• Move to next nodes in both lists.

• Handle cases where one list is longer than the other.

• Handle final carry if present.
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Q2. Find shortest path in graph
Ans. 
Use Dijkstra's algorithm to find the shortest path in a graph
• Implement Dijkstra's algorithm to find the shortest path between two nodes in a graph

• Maintain a priority queue to keep track of the shortest distance to each node

• Update the shortest distance to each node as you traverse the graph

• Track the path by storing the previous node for each node visited
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Q1. Check tree is BST
Ans. 
Check if a binary tree is a Binary Search Tree (BST)
• Perform an in-order traversal of the tree and check if the resulting array is sorted

• Keep track of the previous node value during traversal to compare with the current node value

• Ensure that each node's value is greater than the previous node's value in the in-order traversal
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Q2. Check substring palindrome or not
Ans. 
Check if a substring in an array of strings is a palindrome or not.
• Iterate through each string in the array

• For each string, check if any of its substrings are palindromes

• Return true if a palindrome substring is found, false otherwise
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