Array in Data Structure and Algorithms

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 have a fixed size once they are created. Arrays can be one-dimensional (single row or column), two-dimensional (matrix), or multi-dimensional. Every array elements has an index value. Its start from 0.

        Array Length:-

            To find out how many elements an array has, we can use the length keyword.

            

Sample Java Code:-

    How to get user inputs in Java?

            The Scanner class is used to get user input, and it is found in the java.util package. To use the Scanner class, create an object of the class and use any of the available methods found in the Scanner class documentation. 

Sample Java Code with user input:-

Array Operations:-

    There are several operations in arrays.

• Insert    - Adding a new element
• Delete    - Delete an existing element 
• Update  - Modify the element of a array
• Search   - Finding the index or presence of a specific element