Python - Array Exercises

Example 1

Python program to find the largest number in an array −

import array as arra = arr.array('i', [10,5,15,4,6,20,9])print (a)largest = a[0]for i in range(1, len(a)):   if a[i]>largest:      largest=a[i]print ("Largest number:", largest)

It will produce the followingoutput −

array('i', [10, 5, 15, 4, 6, 20, 9])Largest number: 20

Example 2

Python program to store all even numbers from an array in another array −

import array as arra = arr.array('i', [10,5,15,4,6,20,9])print (a)b = arr.array('i')for i in range(len(a)):   if a[i]%2 == 0:      b.append(a[i])print ("Even numbers:", b)

It will produce the followingoutput −

array('i', [10, 5, 15, 4, 6, 20, 9])Even numbers: array('i', [10, 4, 6, 20])

Example 3

Python program to find the average of all numbers in a Python array −

import array as arra = arr.array('i', [10,5,15,4,6,20,9])print (a)s = 0for i in range(len(a)):   s+=a[i]avg = s/len(a)print ("Average:", avg)# Using sum() functionavg = sum(a)/len(a)print ("Average:", avg)

It will produce the followingoutput −

array('i', [10, 5, 15, 4, 6, 20, 9])Average: 9.857142857142858Average: 9.857142857142858

Exercise Programs

• Python program find difference between each number in the array and the average of all numbers

• Python program to convert a string in an array

• Python program to split an array in two and store even numbers in one array and odd numbers in the other.

• Python program to perform insertion sort on an array.

• Python program to store the Unicode value of each character in the given array.