Java Buzz Forum - Java program to reverse vowels of a string

Program : Java example program to Reverse Vowels in a String

package inheritanceInterviewPrograms;
/*
* @www.instanceofjava.com
*/
public class ReverseVowels {
public static String reverseVowels(String string) {
String vowelsStr = "aeiouAEIOU";
int lo = 0;
int hi = string.length() - 1;
char[] ch = string.toCharArray();
while (lo < hi) {
if (!vowelsStr.contains(String.valueOf(string.charAt(lo)))) {
lo++;
continue;
}
if (!vowelsStr.contains(String.valueOf(string.charAt(hi)))) {
hi--;
continue;
}
// swaping variables
swap(ch, lo, hi);
lo++;
hi--;
}
return String.valueOf(ch);
}
private static void swap(char[] ch, int lo, int hi) {
char temparray = ch[lo];
ch[lo] = ch[hi];
ch[hi] = temparray;
}
public static void main (String args[]) {
System.out.println("After reversing vowels in a string="reverseVowels("InstanceOfjava"));
}
}

Output:


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