Games24x7 Game Developer Interview Questions and Answers

3 online dsa questions easy to medium

Classes, oops, array, constructor

Q1. Write a code for copy constructor
Ans. 
A copy constructor is a special type of constructor that creates a new object as a copy of an existing object.
• Copy constructor should have a parameter of the same class type

• It is used to create a new object by copying the values of an existing object

• It is called when a new object is created from an existing object
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Q2. Write a code for virtual function
Ans. 
A virtual function is a member function that is declared within a base class and is redefined by a derived class.
• Declare a virtual function in the base class using the 'virtual' keyword.

• Override the virtual function in the derived class using the 'override' keyword.

• Use the base class pointer to call the virtual function, which will be resolved at runtime based on the actual object type.
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Q1. Design patterns
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Q2. Oops concept and implementation
Ans. 
Oops concept refers to Object-Oriented Programming principles and their implementation in software development.
• Oops concepts include inheritance, polymorphism, encapsulation, and abstraction.

• Inheritance allows a class to inherit properties and behaviors from another class.

• Polymorphism allows objects to be treated as instances of their parent class.

• Encapsulation hides the internal state of an object and only exposes nec...read more
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They asked LRU implementation of data structure

Q1. Reflection API in java
Ans. 
Reflection API in Java allows for inspecting and modifying classes, methods, fields at runtime.
• Reflection API provides a way to examine and modify the behavior of classes, methods, and fields at runtime.

• It allows access to class information, such as constructors, methods, fields, annotations, etc.

• Reflection can be used for dynamic loading of classes, invoking methods at runtime, and examining annotations.

• Example: Using...read more
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Q2. Memory management jvm
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Q1. What is linked list?
Ans. 
A linked list is a data structure where each element points to the next element in the sequence.
• Consists of nodes connected by pointers

• Allows for dynamic size and efficient insertion/deletion

• Examples: singly linked list, doubly linked list
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Q2. What design patterns you use in your games?
Ans. 
I use design patterns such as MVC, Observer, and Factory in my games for better organization and scalability.
• MVC (Model-View-Controller) for separating game logic, user interface, and data

• Observer for handling events and notifications between game components

• Factory for creating objects without specifying the exact class
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Q3. Explain about trees?
Ans. 
Trees in Unity are hierarchical data structures used to organize game objects in a parent-child relationship.
• Trees are used to create complex scenes by organizing game objects in a hierarchy.

• Each game object can have one parent and multiple children, forming a tree structure.

• Transform properties like position, rotation, and scale are relative to the parent in the tree.

• Example: A tree structure can be used to represent ...read more
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