Array In DSA | Basics Of Array | Array Fundamental | DSA - Cyber Thieve

ARRAY IN DSA

Arrays is a basic data structure in computer science and data structure algorithms (DSA). They are used to store a collection of elements of the same data type. An array in DSA is an ordered sequence of elements with a fixed size that can be accessed using an index  which represents its position in the array. The index starts from 0 and goes up to n-1, where n is the size of the array. Arrays are widely used in programming because of their efficiency, simplicity, and versatility.

Array example in python :

python
int myArray[5] = {1, 2, 3, 4, 5};

ARRAY : Advantage of Array

• Random Access : Random access means that any element in an array can be accessed directly using its index. Random access is very useful in algorithms that require quick access to specifiec elements.
• Easy to Use : Arrays are easy to use and implement. They are a simple and intuitive way of storing and accessing data. Once an array is created, it can be used easily in various algorithms.
• Memory Efficiency : Arrays are memory-efficient, and they can store a large number of elements in a contiguous block of memory. This means that it is easy to access and manipulate the elements of an array quickly.
• Simple Operations : Arrays support simple operations such as insertion, deletion, and searching. These operations can be performed efficiently using arrays, and many data structure algorithms rely on arrays to perform these operations.
• Multiple Dimensions : Arrays can be of multiple dimensions, which makes them useful for storing and accessing data in a structured manner. Two-dimensional arrays are commonly used in computer graphics and image processing algorithms.
• Sorting and Searching : Arrays are used extensively in sorting and searching algorithms. Sorting algorithms such as quicksort and mergesort require arrays to sort the elements. Similarly, searching algorithms such as linear search and binary search require arrays to search for specific elements.
• Space Complexity : Arrays have a space complexity of O(n), where n is the number of elements in the array. This means that arrays require less memory than other data structures such as linked lists or trees.