Remove consecutive vowels from string

Difficulty Level : Medium
Last Updated : 08 Nov, 2020

Given a string s of lowercase letters, we need to remove consecutive vowels from the string

Note : Sentence should not contain two consecutive vowels ( a, e, i, o, u).

Examples :

Input: geeks for geeks
Output: geks for geks

Input : your article is in queue 
Output : yor article is in qu

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

Approach: Iterate string using a loop and check for the repetitiveness of vowels in a given sentence and in case if consecutive vowels are found then delete the vowel till coming next consonant and printing the updated string.

C++

// C++ program for printing sentence 
// without repetitive vowels 
#include <bits/stdc++.h> 
using namespace std; 
  
// function which returns True or False 
// for occurrence of a vowel 
bool is_vow(char c) 
{ 
    // this compares vowel with  
    // character 'c' 
    return (c == 'a') || (c == 'e') ||  
           (c == 'i') || (c == 'o') ||  
           (c == 'u'); 
} 
  
// function to print resultant string 
void removeVowels(string str) 
{ 
    // print 1st character 
    printf("%c", str[0]); 
  
    // loop to check for each character 
    for (int i = 1; str[i]; i++) 
  
        // comparison of consecutive characters 
        if ((!is_vow(str[i - 1])) ||  
            (!is_vow(str[i]))) 
            printf("%c", str[i]); 
} 
  
// Driver Code 
int main() 
{ 
    char str[] = " geeks for geeks"; 
    removeVowels(str); 
} 
  
// This code is contributed by Abhinav96 

Java

// Java program for printing sentence 
// without repetitive vowels 
import java.io.*; 
import java.util.*; 
import java.lang.*; 
  
class GFG 
{  
    // function which returns 
    // True or False for 
    // occurrence of a vowel 
    static boolean is_vow(char c) 
    { 
        // this compares vowel  
        // with character 'c' 
        return (c == 'a') || (c == 'e') ||  
               (c == 'i') || (c == 'o') ||  
               (c == 'u'); 
    } 
      
    // function to print 
    // resultant string 
    static void removeVowels(String str) 
    { 
        // print 1st character 
        System.out.print(str.charAt(0)); 
      
        // loop to check for  
        // each character 
        for (int i = 1;  
                 i < str.length(); i++) 
      
            // comparison of  
            // consecutive characters 
            if ((!is_vow(str.charAt(i - 1))) ||  
                (!is_vow(str.charAt(i)))) 
                System.out.print(str.charAt(i)); 
    } 
      
    // Driver Code 
    public static void main(String[] args) 
    { 
        String str = "geeks for geeks"; 
        removeVowels(str); 
    } 
} 

Python3

# Python3 implementation for printing  
# sentence without repetitive vowels 
  
# function which returns True or False 
# for occurrence of a vowel 
def is_vow(c): 
  
    # this compares vowel with  
    # character 'c' 
    return ((c == 'a') or (c == 'e') or 
            (c == 'i') or (c == 'o') or 
            (c == 'u')); 
  
# function to print resultant string 
def removeVowels(str): 
  
    # print 1st character 
    print(str[0], end = ""); 
  
    # loop to check for each character 
    for i in range(1,len(str)): 
  
        # comparison of consecutive 
        # characters 
        if ((is_vow(str[i - 1]) != True) or 
            (is_vow(str[i]) != True)): 
              
            print(str[i], end = ""); 
  
# Driver code 
str= " geeks for geeks"; 
removeVowels(str); 
  
# This code is contributed by mits  

C#

// C# program for printing sentence 
// without repetitive vowels 
using System; 
  
class GFG 
{  
    // function which returns 
    // True or False for 
    // occurrence of a vowel 
    static bool is_vow(char c) 
    { 
        // this compares vowel  
        // with character 'c' 
        return (c == 'a') || (c == 'e') ||  
               (c == 'i') || (c == 'o') ||  
               (c == 'u'); 
    } 
      
    // function to print 
    // resultant string 
    static void removeVowels(string str) 
    { 
        // print 1st character 
        Console.Write(str[0]); 
      
        // loop to check for  
        // each character 
        for (int i = 1; i < str.Length; i++) 
      
            // comparison of  
            // consecutive characters 
            if ((!is_vow(str[i - 1])) ||  
                (!is_vow(str[i]))) 
                Console.Write(str[i]); 
    } 
      
    // Driver Code 
    static void Main() 
    { 
        string str = "geeks for geeks"; 
        removeVowels(str); 
    } 
} 
  
// This code is contributed  
// by Manish Shaw(manishshaw1) 

PHP

<?php 
// PHP implementation for printing  
// sentence without repetitive vowels 
  
// function which returns True or False 
// for occurrence of a vowel 
function is_vow($c) 
{ 
    // this compares vowel with  
    // character 'c' 
    return ($c == 'a') || ($c == 'e') ||  
           ($c == 'i') || ($c == 'o') ||  
           ($c == 'u'); 
} 
  
// function to print resultant string 
function removeVowels($str) 
{ 
    // print 1st character 
    printf($str[0]); 
  
    // loop to check for each character 
    for ($i = 1; $i < strlen($str); $i++) 
  
        // comparison of consecutive 
        // characters 
        if ((!is_vow($str[$i - 1])) ||  
            (!is_vow($str[$i]))) 
              
            printf($str[$i]); 
} 
  
// Driver code 
$str= " geeks for geeks"; 
removeVowels($str); 
  
// This code is contributed by mits  
?> 

Output :

geks for geks

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Related Articles

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

C++

Java

Python3

C#

PHP