Rkavindu

  Stack:-      Stack is a Java class that extends Vector in the Collection framework. In stack data structure have FILO (First In Last Out), LIFO (Last In First Out) concept.     Its mean, if we add some data   to the stack, inserted first data  we can execute it in last. We can execute last inserted data at first.      Java provides an implementation of a stack through the java.util.Stack class, which extends the Vector class.     If there are any element is not in the stack, we called that stacks as empty stack.       In a stack, you typically have operations like:                Push :-     Adds an element to the top of the stack.                Pop :-Removes and returns the top element from the stack.                Peek : - Returns the top elem...

  Linked List:-      A linked list in Java is a linear data structure where elements are stored in nodes. Unlike arrays, which store elements in contiguous memory locations, linked lists use pointers or references to connect nodes, allowing for dynamic memory allocation and efficient insertion and deletion operations Node:-      Each element in a linked list is stored in a node. Node Has 2 parts as data and pointer. Data means actual value that store in the list. Pointer is the Points to the next/previous node in the list. Operations in linked list:-     There are several operations in java linked list. Insertion - add new node to linked list Deletion  - delete an existing element of the list Search   -  find the specific element      these are some examples for java linked list operations.     In java coding, we want to add  library when we coding(import java.util.LinkedList;). Linked List is...

Data Structure:-      A data structure is a specialized format for organizing, processing, retrieving and storing data. When data is stored in data structures, it is easy to operate on that data. Why we need Data Structure? Data structures provide a way to organize and store data efficiently. Different data structures are optimized for specific operations. Choosing the right data structure can significantly impact the efficiency of algorithms. Data structures help in managing resources effectively. Many algorithms and problem-solving techniques rely on data structures. Linear Data Structure:-      A linear data structure is a type of data structure that stores the data linearly or sequentially. In the linear data structure, data is arranged in such a way that one element is adjacent to its previous and the next element.     Lets talk about types of linear data structure. 1)Array:-     It is a collection of same type data.  Arrays ha...

     An anonymous function, often known as a function without a name, can be succinctly expressed in Java using a lambda expression and can be stored in a variable or passed around as a parameter. Java 8 brought in lambda expressions to better support functional programming paradigms. Why we use lambda expression in java?      Code Reusability and Maintainability: Lambda expressions promote code reusability by encapsulating behavior into functional interfaces and lambda expressions. This leads to more modular and maintainable codebases, as common behaviors can be reused across different parts of an application.       Passing Behavior: Behavior can be easily passed as a parameter to methods using lambda expressions. This is especially helpful in situations when you need to specify distinct actions for processing collections, managing events, and callback methods.      Short and Easy to Read Code: Compared to explicit functiona...