Program to remove vowels from a String

Difficulty Level : Medium
Last Updated : 18 Feb, 2020

Given a string, remove the vowels from the string and print the string without vowels.

Examples:

Input : welcome to geeksforgeeks
Output : wlcm t gksfrgks

Input : what is your name ?
Output : wht s yr nm ?

Recommended: Please try your approach on {IDE} first, before moving on to the solution.

A loop is designed that goes through a list composed of the characters of that string, removes the vowels and then joins them.

C++

// C++ program to remove vowels from a String
#include <bits/stdc++.h>
using namespace std;
  
string remVowel(string str) 
{
    vector<char> vowels = {'a', 'e', 'i', 'o', 'u',
                           'A', 'E', 'I', 'O', 'U'};
      
    for (int i = 0; i < str.length(); i++) 
    {
        if (find(vowels.begin(), vowels.end(),
                      str[i]) != vowels.end()) 
        {
            str = str.replace(i, 1, "");
            i -= 2;
        }
    }
    return str;
}
  
// Driver Code
int main() 
{
    string str = "GeeeksforGeeks - A Computer"
                 " Science Portal for Geeks";
    cout << remVowel(str) << endl;
  
    return 0;
}
  
// This code is contributed by
// sanjeev2552

Java

// Java program to remove vowels from a String
  
import java.util.Arrays;
import java.util.List;
  
class Test
{    
    static String remVowel(String str)
    {
         Character vowels[] = {'a', 'e', 'i', 'o', 'u','A','E','I','O','U'};
           
         List<Character> al = Arrays.asList(vowels);
           
         StringBuffer sb = new StringBuffer(str);
           
         for (int i = 0; i < sb.length(); i++) {
              
             if(al.contains(sb.charAt(i))){
                sb.replace(i, i+1, "") ;
                i--;
             }
        }
           
          
        return sb.toString();
    }
    // Driver method to test the above function
    public static void main(String[] args) 
    {
        String str = "GeeeksforGeeks - A Computer Science Portal for Geeks";
          
        System.out.println(remVowel(str));
    }
}

Python

# Python program to remove vowels from a string
# Function to remove vowels
def rem_vowel(string):
    vowels = ('a', 'e', 'i', 'o', 'u') 
    for x in string.lower():
        if x in vowels:
            string = string.replace(x, "")
              
    # Print string without vowels
    print(string)
  
# Driver program
string = "GeeksforGeeks - A Computer Science Portal for Geeks"
rem_vowel(string)

C#

// C# program to remove vowels from a String
using System;
using System.Text;
using System.Linq;
using System.Collections.Generic;
public class Test
{    
    static String remVowel(String str)
    {
         char []vowels = {'a', 'e', 'i', 'o', 'u','A','E','I','O','U'};
            
         List<char> al = vowels.OfType<char>().ToList();;
            
         StringBuilder sb = new StringBuilder(str);
            
         for (int i = 0; i < sb.Length; i++) {
               
             if(al.Contains(sb[i])){
                sb.Replace(sb[i].ToString(), "") ;
                i--;
             }
        }
            
           
        return sb.ToString();
    }
    // Driver method to test the above function
    public static void Main() 
    {
        String str = "GeeeksforGeeks - A Computer Science Portal for Geeks";
           
        Console.Write(remVowel(str));
    }
}
//This code is contributed by Rajput-Ji

Output:

GksfrGks - Cmptr Scnc Prtl fr Gks

We can improve the above solution by using Regular Expressions.

C++

// C++ program to remove vowels from a String
#include <bits/stdc++.h>
using namespace std;
  
string remVowel(string str)
{
    regex r("[aeiouAEIOU]"); 
      
    return regex_replace(str, r, "");
}
  
// Driver Code
int main() 
{
    string str = "GeeeksforGeeks - A Computer Science Portal for Geeks";     
    cout << (remVowel(str));
    return 0;
}
  
// This code is contributed by Arnab Kundu

Java

// Java program to remove vowels from a String
import java.util.Arrays;
import java.util.List;
  
class GFG
{    
    static String remVowel(String str)
    {
         return str.replaceAll("[aeiouAEIOU]", "");
    }
      
    // Driver Code
    public static void main(String[] args) 
    {
        String str = "GeeeksforGeeks - A Computer Science Portal for Geeks";        
        System.out.println(remVowel(str));
    }
}

C#

// C# program to remove vowels from a String
using System;
using System.Text.RegularExpressions;
  
class GFG
{ 
    static String remVowel(String str)
    {
        str = Regex.Replace(str, "[aeiouAEIOU]", "");
        return str;
    }
      
    // Driver code
    public static void Main() 
    {
        String str = "GeeeksforGeeks - A Computer Science Portal for Geeks";     
        Console.WriteLine(remVowel(str));
    }
}
  
//This code is contributed by 29AjayKumar

Python

# Python program to remove vowels from a string
# Function to remove vowels
  
# import the module for regular expression (re)
import re
def rem_vowel(string):
    return (re.sub("[aeiouAEIOU]","",string))            
  
# Driver program
string = "GeeksforGeeks - A Computer Science Portal for Geeks"
print rem_vowel(string)

Output:

GksfrGks -  Cmptr Scnc Prtl fr Gks

This article is contributed by Pramod Kumar. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

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Recommended: Please try your approach on {IDE} first, before moving on to the solution.

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