PYTHON - Array Exercises

Python - Array Exercises

Example 1

Python program to find the largest number in an array −

PYTHON CODE

import array as arr
a = 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]&gt;largest:
      largest=a[i]
print ("Largest number:", largest)

It will produce the followingoutput−

PYTHON CODE

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 −

PYTHON CODE

import array as arr
a = 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−

PYTHON CODE

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 −

PYTHON CODE

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

# Using sum() function
avg = sum(a)/len(a)
print ("Average:", avg)

It will produce the followingoutput−

PYTHON CODE

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

PYTHON - Array Methods PYTHON - File Handling