Explain Types of Arrays in DSA – 1D, 2D and 3D with free Notes

Introduction

Arrays are versatile Data Structure which are used to store collection of elements. Depending on the number of dimensions, arrays can be classified into Three Types of Arrays: – One-Dimensional (1D), Two-Dimensional (2D), Three-Dimensional (3D) Arrays. Each types serves a different purposes and it is useful in the various applications.

Three Types of Arrays

Here is the Explanation about the Types of Arrays,

1 D Arrays

A One-Dimensional Array is a linear structure which stores element in a single row. Each element is accessed using a single index.

Use Case: – 1D Arrays ideal for storing lists of data like scores, names or temprature.

DSA - Notes

2 D Array

A Two-Dimensional Arrays is like Matrix, storing elements in rows and columns. It requires two indices to access and element: one for the row and one for the column.

Use Case: – 2D Arrays are useful for representing grids, tables, or any data that requires a matrix-like structure, such as pixel data in images.

3 D Array

A Three-Dimensional Array extends the concept to three levels: rows, columns, and depth (layer). It requires three indices to access an element.

Use Case: – 3D Arrays are often used in scientific computing, simulations, and representing volumetric data, like color images (height, width, color channels) or 3D Models.

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