ALTRAN SOLUTIONS INDIA Software Engineer Interview Questions and Answers

Q1. Search in a sorted matrix
Ans. 
Search for a target value in a sorted matrix efficiently.
• Start from the top right corner and move left or down based on comparison with target value

• Utilize the sorted nature of the matrix to eliminate certain rows or columns

• Implement binary search for more efficient search in each row or column
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Q2. Rotting orange graph
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Q3. Database Indexing and SQL
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Q1. Design Patterns
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Q2. Medium level Binary tree question
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Q3. Previous work discussion
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Basic MCQs on General aptitude, logical reasoning and programming questions

Q1. What is a constructor in C++?
Ans. 
A constructor in C++ is a special member function that is automatically called when an object is created.
• Constructors have the same name as the class and do not have a return type.

• They can be used to initialize the object's data members.

• Default constructors are automatically generated if no constructor is defined.

• Parameterized constructors can be defined to accept arguments during object creation.
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Q2. What is copy assignment operator?
Ans. 
Copy assignment operator is a special member function in C++ that allows one object to be assigned the values of another object of the same class.
• Copy assignment operator is denoted by the = operator.

• It is used to copy the values of one object into another object of the same class.

• It is automatically generated by the compiler if not explicitly defined.

• Example: MyClass obj1; MyClass obj2; obj2 = obj1; // Copy assignment
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Q3. What is virtualization in C++?
Ans. 
Virtualization in C++ is the process of creating a virtual version of a class or function to allow for polymorphism and dynamic binding.
• Virtualization in C++ is achieved through the use of virtual functions and inheritance.

• Virtual functions are declared in a base class and overridden in derived classes to provide different implementations.

• Virtualization allows for polymorphism, where a pointer to a base class can point...read more
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Q4. Implement String class
Ans. 
Implement a custom String class in a programming language.
• Define a class with necessary properties and methods to manipulate strings.

• Include methods for concatenation, substring, length, etc.

• Handle memory allocation and deallocation properly.

• Example: class MyString { // implementation }
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Q5. What is smart pointers?
Ans. 
Smart pointers are objects that act like pointers but provide automatic memory management.
• Smart pointers help prevent memory leaks by automatically deallocating memory when no longer needed.

• Examples include unique_ptr, shared_ptr, and weak_ptr in C++.

• They provide better memory safety compared to raw pointers.
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Three coding question

Two technical questions based on strings and linked lists.

Q1. Tell me about yourself?
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Q2. Python and java spring cloud
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