Cema Automations Interview Questions and Answers

Basic aptitude with code and logical reasoning

Q1. Resume based questions
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Q2. Basic fundamentals of programming
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Q3. Questions on basis of web technologies
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Q4. Told to Implement a basic web app to display the prime numbers within a given range
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Q1. They asked about all the basics of OOPS concepts
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Q2. Asked about previous job roles and responsibilities
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Q1. 1. Basic OOP Concepts 2. Difference between structure and class in terms of constructor 3. Can members of structure be defined as private 4. What's lambda function and it's real life use case 5. Difference...read more
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Q2. 6. What's O(n) in time and space complexity
Ans. 
O(n) refers to linear time and space complexity.
• O(n) means that the time or space required by an algorithm grows linearly with the size of the input.

• It implies that the algorithm's performance is directly proportional to the input size.

• For example, if an algorithm takes 10 seconds to process 100 elements, it would take 20 seconds to process 200 elements.

• O(n) complexity is considered efficient and desirable in most case
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It was simple mostly asked basic coding questions

Q1. Interviewed with ceo
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Q2. What is your background and things?
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Q1. Mostly technical questions were asked
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Q1. What is the concept of virtual inheritance in relation to vtables and vptrs in object-oriented programming?
Ans. 
Virtual inheritance allows a derived class to inherit from a base class without creating duplicate base class subobjects.
• Virtual inheritance is used to resolve the Diamond Problem in C++ where a class inherits from two classes that have a common base class.

• It ensures that only one copy of the base class is inherited by the derived class.

• Virtual inheritance introduces a virtual base class subobject to the derived class,...read more
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Q2. Explained about vtptr and vtable initialisation and structure
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Q1. What is the implementation of a class for string operations?
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A class for string operations can include methods for concatenation, substring extraction, length calculation, etc.
• Create a class with methods like concatenateStrings, extractSubstring, calculateLength, etc.

• Use string manipulation functions like substring, concat, length, etc. within the class methods.

• Ensure error handling for edge cases like empty strings or out-of-bounds indices.

• Example: class StringOperations { conc...read more
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