Skip to content
Related Articles

Related Articles

Python program to count number of vowels using sets in given string

View Discussion
Improve Article
Save Article
  • Difficulty Level : Medium
  • Last Updated : 18 Dec, 2019

Given a string, count the number of vowels present in given string using Sets.

Prerequisite: Sets in Python


Input : GeeksforGeeks
Output : No. of vowels : 5

Input : Hello World
Output : No. of vowels :  3

1. Create a set of vowels using set() and initialize a count variable to 0.
2. Traverse through the alphabets in the string and check if the letter in the string is present in set vowel.
3. If it is present, the vowel count is incremented.

Below is the implementation of above approach:

# Python3 code to count vowel in 
# a string using set
# Function to count vowel
def vowel_count(str):
    # Initializing count variable to 0
    count = 0
    # Creating a set of vowels
    vowel = set("aeiouAEIOU")
    # Loop to traverse the alphabet
    # in the given string
    for alphabet in str:
        # If alphabet is present
        # in set vowel
        if alphabet in vowel:
            count = count + 1
    print("No. of vowels :", count)
# Driver code 
str = "GeeksforGeeks"
# Function Call


No. of vowels : 5

My Personal Notes arrow_drop_up
Recommended Articles
Page :

Start Your Coding Journey Now!