Python program to calculate the number of words and characters in the string

Given a String. The task is to find out the Number Of Words And Characters Present In The String.

 Examples:

Input: Geeksforgeeks is best Computer Science Portal
Output:
The number Of Words are : 6
The Number Of Characters are : 45

Input: Hello World!!!
Output:
The original string is : Hello World!!!
The number of words in string are : 2
The number of words in string are :  14

Count The Number Of  Characters present in a string using len() function. You can also use a for loop for counting characters

char=0
for i in string:
    char=char+1

For Counting 

Method 1: Using split()

The split function is quite useful and usually quite a generic method to get words out of the list, but this approach fails once we introduce special characters in the list.

Python3

# Python3 code to demonstrate
# to count words in string
# using split()

# initializing string
test_string = "Geeksforgeeks is best Computer Science Portal"


# printing original string
print("The original string is : " + test_string)

# using split()
# to count words in string
res = len(test_string.split())

# printing result
print("The number of words in string are : " + str(res))
print("The number of words in string are : ", len(test_string))

Output:

The original string is : Geeksforgeeks is best Computer Science Portal 
The number of words in string are : 6 
The number of words in string are :  45

Method 2: Using regex module

Here findall() function is used to count the number of words in the sentence available in a regex module.

Python3

import re
test_string = "GeeksForGeeks is a learning platform"

# original string
print("The original string is : " + test_string)

# using regex (findall()) function
res = len(re.findall(r'\w+', test_string))

# total no of words
print("The number of words in string are : " + str(res))
print("The number of Characters in string are : ", len(test_string))

Output:

The original string is : GeeksForGeeks is a learning platform 
The number of words in string are : 5 
The number of Characters in string are :  36

Time Complexity: O(n)
Auxiliary Space: O(n)

Method 3: Using sum()+ strip()+ split() function

Here we first check all the words in the given sentence and add them using the sum() function.

Python3

import string


test_string = "GeeksForGeeks is a learning platform"

# printing original string
print("The original string is: " + test_string)

# using sum() + strip() + split() function
res = sum([i.strip(string.punctuation).isalpha() for i in
           test_string.split()])

# no of words
print("The number of words in string are : " + str(res))
print("The number of characters in string are : ", len(test_string))

Output:

The original string is: GeeksForGeeks is a learning platform 
The number of words in string are : 5 
The number of characters in string are :  36

Method #4 : Using count() and len() methods

Python3

# Python3 code to demonstrate
# to count words in string
# using split()

# initializing string
test_string = "Geeksforgeeks is best Computer Science Portal"


# printing original string
print("The original string is : " + test_string)

# using split()
# to count words in string
res = test_string.count(" ")+1

# printing result
print("The number of words in string are : " + str(res))
print("The number of words in string are : ", len(test_string))

Output

The original string is : Geeksforgeeks is best Computer Science Portal
The number of words in string are : 6
The number of words in string are :  45

The Time and Space Complexity for all the methods are the same:

Time Complexity: O(n)

Auxiliary Space: O(n)