LG Soft India Research Engineer Interview Questions and Answers

Questions are based on c, c++ programmings.

Q1. Questions from DSA like sorting , reverse sentence
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Q2. Sorting- Quick sort, selection sort
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Q3. String - Reverse the string
Ans. 
Reverse a given string
• Create a new string and iterate through the original string in reverse order, appending each character to the new string

• Alternatively, use built-in functions like reverse() or StringBuilder in languages like Python or Java

• Example: Input 'hello' -> Output 'olleh'
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Q4. Constructor and distructor related question
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Q1. Tell me about yourself , Why want to join in lg
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Q1. Explain about C++ concepts
Ans. 
C++ concepts include object-oriented programming, classes, inheritance, polymorphism, templates, and memory management.
• Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• Classes are user-defined data types that contain data members and member functions.

• Inheritance allows a class to inherit properties and ...read more
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Q2. Explain about the smart pointers

Ans. 

Smart pointers are objects that manage the memory of dynamically allocated objects in C++ to prevent memory leaks.

• Smart pointers automatically handle memory deallocation

• Types of smart pointers include unique_ptr, shared_ptr, and weak_ptr

• Example: unique_ptr ptr(new int(5));

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