🚀 Top Coding Interview Concepts – Part 4 💻🔥

31. Polymorphism

The ability of the same method or interface to behave differently depending on the object using it.

Example: Different classes can implement the same draw() method in different ways.

32. Abstraction

Hiding unnecessary implementation details and exposing only the essential functionality.

Example: You use a print() function without needing to know how the printer works internally.

33. Constructor

A special method that is automatically called when an object is created and is typically used to initialize its properties.

Example: A Car constructor can set the car's model and color when the object is created.

34. Interface

A contract that defines methods or behaviors a class must provide, without necessarily defining how they are implemented.

Example: A Payment interface may require pay() to be implemented by different payment methods.

35. Method Overloading

Defining multiple methods with the same name but different parameters.

Example: An add() method can accept two numbers or three numbers, depending on the language's support for overloading.

36. Method Overriding

When a child class provides its own implementation of a method already defined in its parent class.

Example: Dog can override an Animal class's sound() method.

37. Pointer

A variable that stores the memory address of another variable or object.

Example: Pointers are commonly used in C and C++ for direct memory manipulation.

38. Reference

A way to refer to an existing object or value without necessarily creating a separate copy of it.

Example: Multiple variables can reference the same object in memory.

39. Memory Management

The process of allocating, using, and releasing memory efficiently during program execution.

Example: Garbage collection automatically removes objects that are no longer needed in languages such as Java and Python.

40. Garbage Collection

An automatic memory-management process that identifies and frees memory occupied by objects that are no longer reachable or needed.

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