» » » Java program to reverse vowels of a string


Program : Java example program to Reverse Vowels  in a String



  1. package inheritanceInterviewPrograms;
  2. /*
  3.  * @www.instanceofjava.com
  4.  */
  5. public class ReverseVowels {
  6.     public static String reverseVowels(String string) {
  7.  
  8.         String vowelsStr = "aeiouAEIOU";
  9.  
  10.         int lo = 0;
  11.         int hi = string.length() - 1;
  12.         char[] ch = string.toCharArray();
  13.  
  14.  while (lo < hi) {
  15.  
  16.      if (!vowelsStr.contains(String.valueOf(string.charAt(lo)))) {
  17.                 lo++;
  18.                 continue;
  19.        }
  20.  
  21.     if (!vowelsStr.contains(String.valueOf(string.charAt(hi)))) {
  22.                 hi--;
  23.                 continue;
  24.        }
  25.  
  26.     // swaping variables
  27.      swap(ch, lo, hi);
  28.             lo++;
  29.             hi--;
  30.       }
  31.  
  32.         return String.valueOf(ch);
  33.     }
  34.  
  35. private static void swap(char[] ch, int lo, int hi) {
  36.  
  37.         char temparray = ch[lo];
  38.         ch[lo] = ch[hi];
  39.         ch[hi] = temparray;
  40.  
  41.  }
  42.     
  43. public static void main (String args[]) {
  44.         
  45.          
  46.  System.out.println("After reversing vowels in a string="reverseVowels("InstanceOfjava"));
  47.         
  48.          
  49. }
  50.  
  51. }
Output:


  1. After reversing vowels in a string=anstancOefjavI


Instance Of Java

We will help you in learning.Please leave your comments and suggestions in comment section. if you any doubts please use search box provided right side. Search there for answers thank you.
«
Next
Newer Post
»
Previous
Older Post

No comments

Leave a Reply

Select Menu