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Altair Engineering Sde1 Interview Questions, Process, and Tips
Altair Engineering Sde1 Interview Experiences
1 interview found
I applied via Naukri.com and was interviewed in Jan 2023. There were 2 interview rounds.
(10 Questions)
- Q1. Basic OOP's Concepts
- Q2. What's Copy Constructor and how and why it is used
- Ans.
Copy constructor creates a new object by copying the values of an existing object.
Copy constructor is used to create a new object with the same values as an existing object.
It is invoked when a new object is initialized with an existing object.
It is used to avoid shallow copy and ensure deep copy of objects.
Example: MyClass obj1; MyClass obj2 = obj1; //copy constructor called to create obj2
- Q3. What's shallow and deep copy
- Ans.
Shallow copy creates a new object with the same reference as the original, while deep copy creates a new object with a new reference.
Shallow copy only copies the reference to the original object, so changes made to the copy will affect the original object.
Deep copy creates a new object with a new reference, so changes made to the copy will not affect the original object.
In Python, shallow copy can be made using the cop...
- Q4. How vector works internally
- Ans.
Vectors are dynamic arrays that allocate memory dynamically. They work by storing elements in contiguous memory locations.
Vectors allocate memory dynamically and store elements in contiguous memory locations
They can be resized dynamically as needed
Accessing elements is done using an index, similar to arrays
Inserting or deleting elements in the middle of a vector can be expensive as it requires shifting all subsequent e...
- Q5. Different containers in STL
- Ans.
STL provides various containers like vector, list, map, set, etc.
Vector: Dynamic array with contiguous memory allocation
List: Doubly linked list
Map: Associative container with key-value pairs
Set: Associative container with unique keys
Deque: Double-ended queue
Stack: LIFO data structure
Queue: FIFO data structure
- Q6. What's difference between ordered map and unordered map
- Ans.
Ordered map maintains the order of insertion while unordered map does not.
Ordered map is implemented using a balanced binary search tree while unordered map is implemented using a hash table.
Ordered map is useful when we need to maintain the order of insertion while unordered map is useful when we need faster access to elements.
Example of ordered map: std::map in C++, Example of unordered map: std::unordered_map in C++
- Q7. What's' polymorphism and how it works
- Ans.
Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were the same type.
Polymorphism is achieved through method overriding and method overloading.
Method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.
Method overloading is when a class has two or more methods with the same...
- Q8. How compiler differentiate between different function with same signature. Name mangling
- Ans.
Name mangling is used by compilers to differentiate between different functions with the same signature.
Name mangling is a process of encoding/decoding function names to include additional information such as parameter types and namespaces.
This allows the compiler to differentiate between functions with the same name and signature.
For example, in C++, two functions with the same name and signature but in different name...
- Q9. Write C++ program to find absolute difference between sum of diagonal elements
- Ans.
C++ program to find absolute difference between sum of diagonal elements
Create a 2D array
Calculate sum of diagonal elements
Calculate absolute difference
Print the result
- Q10. How does virtual function works. What's Vptr and Vtable. Why virtual function is needed
- Ans.
Virtual functions allow dynamic binding of functions at runtime. Vptr and Vtable are used to implement this feature.
Virtual functions are declared in base class and can be overridden in derived classes.
Vptr is a pointer to Vtable which contains addresses of virtual functions.
Virtual function is needed to achieve polymorphism and to allow derived classes to have their own implementation of a function.
Virtual functions a...
(5 Questions)
- Q1. Brief about background, experience and projects
- Ans.
I am a software engineer with 5 years of experience in developing web applications and mobile apps.
Developed a web application for a healthcare company using React and Node.js
Built a mobile app for a retail company using React Native
Worked on a project for a financial institution using Java and Spring Framework
Experience in Agile methodology and Scrum framework
Strong skills in problem-solving and debugging
- Q2. Few code snippet regarding memory leak how you will resolve them
- Q3. Code snippet regarding how virtual function will work. With and without virtual keyword
- Q4. Given one point and circle how will you find if it's inside circle or outside circle
- Ans.
Check if a point is inside or outside a circle
Calculate the distance between the center of the circle and the given point using the distance formula
If the distance is less than the radius of the circle, the point is inside the circle
If the distance is equal to the radius of the circle, the point is on the circle
If the distance is greater than the radius of the circle, the point is outside the circle
- Q5. What's smart pointers Which IDE you use Have you used GDB?
- Ans.
Smart pointers are objects that manage the memory of dynamically allocated objects, preventing memory leaks and dangling pointers.
Smart pointers are a type of RAII (Resource Acquisition Is Initialization) technique.
They automatically delete the object they point to when it is no longer needed.
Examples of smart pointers include unique_ptr, shared_ptr, and weak_ptr in C++.
They are used to prevent memory leaks and danglin...
Interview Preparation Tips
- C++
- Aptitude
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I was interviewed in Nov 2016.
Interview Questionnaire
8 Questions
- Q1. A random number will be given as input to system,write a program to detect its data type(int or float ) without using size of function
- Q2. General hr questions
- Q3. Once again general hr interview questions
- Q4. 1.given a large rectangle
- Ans.
Need more context. What needs to be done with the large rectangle?
What are the dimensions of the rectangle?
Is it a 2D or 3D object?
What is the context of the problem?
Are there any constraints or limitations?
What tools or programming languages can be used?
- Q5. You will be given dimensions of a bigger rectangle and smaller rectangle,derive a formula to get how many smaller rectangles fit into the bigger rectangle
- Ans.
Derive a formula to determine how many smaller rectangles fit into a bigger rectangle given their dimensions.
Calculate the number of times the smaller rectangle can fit into the bigger rectangle horizontally and vertically
Divide the width of the bigger rectangle by the width of the smaller rectangle to get the horizontal count
Divide the height of the bigger rectangle by the height of the smaller rectangle to get the ve...
- Q6. How many points are required to draw a rectangle
- Ans.
At least 4 points are required to draw a rectangle.
A rectangle has 4 sides and 4 corners, so at least 4 points are needed to define those corners.
The points must be arranged in a specific order to form a closed shape with 4 sides.
Additional points can be used to add details or modify the shape of the rectangle.
The number of points required may vary depending on the software or tool used to draw the rectangle.
- Q7. What will be the new coordinates of a rectangle points if rectangle length and breadth is scaled and write a program to calculate the coordinates of corner points of scaled rectangle
- Ans.
Answering how to calculate new coordinates of a scaled rectangle and providing a program for it.
To calculate new coordinates, multiply the original coordinates by the scaling factor
Scaling factor can be calculated by dividing the new length/breadth by the original length/breadth
Program can take input of original coordinates, scaling factor, and output new coordinates
Example: Original coordinates: (0,0), (0,5), (5,5), (...
- Q8. Lastly a puzzle: i dont remember the question
Interview Preparation Tips
Experience: The test had three sections:
1.aptitude:It was like any other aptitude test,all it takes is a bit of practice to crack all the questions
2.C programming:Basics of c were asked,outputs of some programs,u have to be thorough with concepts of c
3.Electronics:The company hired for both profiles: 1. PDK:software
and 2.Logic library:hardware,so this electronics section was also there,questions are mostly Network analysis,cmos logic,digital logic,vlsi etc
u should have good basics to get the electronics questions of course they are not very hard,but not too easy
Tips: practice aptitude,basics of c programming and also basics of electronics
Duration: 1 hour 30 minutes
Total Questions: 60
Round: Test
Experience: after 1st round i was shortlisted to this technical round,i was asked this question, i suggested that i will convert that number into a string and check whether string has a dot or not to check if it is float or int,the interviewer was not very impressed but was ok and asked few small questions and promoted me to next round
Tips: If u crack test with top marks,the technical rounds will be very easy,because the interviewers do not ask tough questions for people who cracked written test with high marks
Round: Technical Interview
Experience: tell me about yourself,strengths,weakness,three principles u follow in life,etc
Tips: This round depends on you,dont try to bluff something,they will know if u are bluffing,take a breath and speak up ur mind,be confident u can do it
Round: HR Interview
Experience: same questions,but this time less duration,not involving lengthy discussions, i think this round was just for double check
Round: HR Interview
Experience: After the hr round,only seven were shortlist,this interview round was very much easy and they checked my approach to the given problem,they were checking how well i am thinking adding complexities to the given problem
Tips: they did not check my programming ability,but just problem solving skills,so be good at aptitude,by practicing as much as you can
Round: Group Discussion
Experience: after technical interview,4 were shortlisted,so they went for gd round,it was general topic,which checks your general knowledge
Tips: Dont be nervous,just speak what ever you know,never mind language issues
Duration: 20 minutes
Skills: for pdk profile :programming
College Name: NIT Warangal
Software Engineer Interview Questions & Answers
Cadence Design Systems
Anonymous
posted on 7 May 2017
I was interviewed in Feb 2017.
Interview Questionnaire
7 Questions
- Q1. What is a malloc function and where is it used and how is it different from new?
- Ans.
malloc is a function in C that dynamically allocates memory on the heap. It is used to allocate memory for variables or data structures.
malloc is used in C programming language.
It is used to allocate memory on the heap.
malloc is different from 'new' in C++ as it does not call constructors for objects.
- Q2. What is the difference between C++ and Objective C and where will you use it?
- Ans.
C++ is a general-purpose programming language while Objective C is a superset of C used for iOS and macOS development.
C++ is widely used for developing applications, games, and system software.
Objective C is mainly used for iOS and macOS development.
C++ supports both procedural and object-oriented programming paradigms.
Objective C is an object-oriented language with dynamic runtime features.
C++ has a larger community a...
- Q3. What is the difference between class container and class composition?
- Ans.
Class container is a class that holds objects of other classes, while class composition is a way to combine multiple classes to create a new class.
Class container holds objects of other classes, acting as a collection or container.
Class composition combines multiple classes to create a new class with its own behavior and attributes.
In class container, the objects are typically stored in a data structure like an array o...
- Q4. There are fifteen horses and a racing track that can run five horses at a time. You have to figure out the top 3 horses out of those and you don't have any timer machine to measure. How will you find the t...
- Ans.
Divide the horses into groups of 5 and race them. Take the top 2 from each race and race them again. Finally, race the top 2 horses to determine the top 3.
Divide the horses into 3 groups of 5 and race them.
Take the top 2 horses from each race and race them again.
Finally, race the top 2 horses to determine the top 3.
- Q5. What is the most difficult problem that you have solved (during work) till now and why you think you could do so?
- Ans.
Developing a real-time data processing system for a high-traffic e-commerce website
Implemented a distributed system architecture to handle large volumes of data
Optimized algorithms for efficient data processing and storage
Utilized caching mechanisms to improve system performance
Worked closely with cross-functional teams to troubleshoot and resolve issues
Example: Successfully reduced data processing time by 50% by imple
- Q6. Why you want to change your current job?
- Ans.
Seeking new challenges and opportunities for growth.
Looking for a more challenging role to further develop my skills
Interested in exploring new technologies and industries
Seeking better career advancement opportunities
Want to work in a more collaborative team environment
- Q7. What is the width of a tree? How will you calculate the width of the tree?
- Ans.
The width of a tree is the maximum number of nodes at any level in the tree.
To calculate the width of a tree, we can perform a level order traversal and keep track of the maximum number of nodes at any level.
We can use a queue data structure to perform the level order traversal.
At each level, we count the number of nodes in the queue and update the maximum width if necessary.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Recruitment Consultant and was interviewed in Dec 2020. There were 4 interview rounds.
Interview Questionnaire
1 Question
- Q1. First round was coding round : 1. One string rotaion of other 2. Nearest largest and smallest prime value of given input. interview questions:What is difference between reference variable and pointer ?
Interview Preparation Tips
I applied via Company Website and was interviewed before Aug 2022. There were 3 interview rounds.
(2 Questions)
- Q1. Describe a time when y ou had to learn a new kill to complete a project
- Q2. Tell me about your resume
Reverse a given string using for loop
Interview Preparation Tips
- Data Structures
- Algorithms
- Coding
Software Engineer Interview Questions & Answers
Siemens PLM Software
Anonymous
posted on 20 Mar 2023
Selected
I applied via Campus Placement and was interviewed before Mar 2022. There were 4 interview rounds.
Basic Coding Problems, 3 questions
(3 Questions)
- Q1. Explain B.E. project and tech stack used
- Ans.
Developed a web-based project management system using PHP and MySQL
Designed and developed a database schema for the project
Implemented user authentication and authorization using PHP sessions
Used HTML, CSS, and JavaScript for the front-end
Used AJAX for dynamic content loading
Deployed the application on Apache web server
Used Git for version control
- Q2. Numeric System based questions
- Q3. Puzzles solving approach
(2 Questions)
- Q1. Basic OOPS concept and their real life examples
- Q2. Puzzle solving approach
Interview Preparation Tips
I applied via Campus Placement
Coding Round is conducted in HackerRank Test
(2 Questions)
- Q1. What is the difference between MySQL and Postgresql.
- Ans.
MySQL is known for its speed and ease of use, while PostgreSQL is known for its advanced features and extensibility.
MySQL is more commonly used in web applications due to its speed and simplicity.
PostgreSQL is preferred for complex applications that require advanced features like JSON support, full-text search, and custom data types.
MySQL has a larger market share and is owned by Oracle, while PostgreSQL is open-source...
- Q2. What is the principle of OOPS
- Ans.
OOPS stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.
OOPS focuses on the use of classes and objects to organize code
Encapsulation: bundling data and methods that operate on the data into a single unit (class)
Inheritance: allows a class to inherit properties and behavior from another class
Polymorphism: the ability for objects of differ...
(2 Questions)
- Q1. What is the OOPS
- Ans.
OOPS stands for Object-Oriented Programming. It 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
Example: In a banking system, you can have classes like Account, Customer, and Transaction, each with their own pro
- Q2. How Will You Include CSS in HTML
- Ans.
CSS can be included in HTML using inline, internal, or external methods.
Use inline CSS by adding the style attribute to HTML elements
Use internal CSS by placing CSS code within <style> tags in the <head> section of the HTML document
Use external CSS by linking an external CSS file to the HTML document using the <link> tag in the <head> section
Skills evaluated in this interview
Selected
I applied via Cocubes and was interviewed before Mar 2023. There were 3 interview rounds.
MCQ Questions on programming languages like C#, Java
(1 Question)
- Q1. Questions asked on Java , OOPs concept and SQL database.
(1 Question)
- Q1. Salary discussion and behavioural questions were asked.
Interview Preparation Tips
Selected
I applied via Campus Placement and was interviewed in Feb 2024. There were 2 interview rounds.
Digital electronics, circuits , verilog , asic design flow
(2 Questions)
- Q1. Explain the complete asic design flow process
- Ans.
ASIC design flow process involves steps like specification, design, verification, synthesis, and testing.
Specification: Define requirements and constraints for the ASIC design.
Design: Create a high-level design based on the specifications.
Verification: Verify the design using simulations and tests.
Synthesis: Convert the design into a netlist of gates and connections.
Testing: Test the fabricated ASIC to ensure functiona...
- Q2. Power reduction techniques in CMOS
- Ans.
Power reduction techniques in CMOS involve various methods to minimize power consumption in CMOS circuits.
Use of power gating to selectively turn off power to unused circuit blocks
Implementing clock gating to disable clock signals to unused circuitry
Utilizing voltage scaling to reduce power consumption at lower voltages
Applying dynamic voltage and frequency scaling to adjust voltage and frequency based on workload
Using...
(2 Questions)
- 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.
- Q2. Graph traversal
(1 Question)
- Q1. System design components discussed in detail with different scenarios
(1 Question)
- Q1. Prepare standard conflict manager round questions like conflict resolution, team leading experience, best work delivered, standard practices etc
Interview Preparation Tips
2. Medium level questions of problem solving
3. Overall understanding of system design components
4. Standard managerial round
Altair Engineering Interview FAQs
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