Array.md

Array

Introduction

• The array is the most commonly used data structure in most of the programming languages.
• The collection of elements of the same data types grouped together called is an array.
• All elements of an array must be of the same datatypes.
• We can create an array in python by importing an array module.
• In Python list treated as an array but the list contains a different type of element inside it where array support only a single type of element to be stored in it.

How to create Array?

First import array module as follows

import array

Create an array using array module

array=array.array('singletypecode',[element of similar data types])

• If you pass different type element to array it will generate an error
• Arrays represent basic values and behave very much like lists

Applications of An Array

1. lookup table
2. hash table
3. heaps

Advantages of an Array

• Very easy to implement and use.
• Fast data structure
• Any item from any position can be accessed because of indexes are present in an array
• arrays can have as many dimensions as we want
• The size of the array can be changed dynamically.

Disadvantages of an Array

• Store only similar data types item in the array

Examples:

#import array module
import array

#Create a integer elements array
arr=array.array('i',[1,2,3,4,5,6,7])

#print array
print("Normal Array")
print(arr)

#print type of an array
print("\n Type of an Array")
print(type(arr))

Output:

Normal Array
array('i', [1, 2, 3, 4, 5, 6, 7])

 Type of an Array
<class 'array.array'>