345.反转字符串中的元音字母

class Solution {
    public String reverseVowels(String s) {
        int len = s.length();
        if(len < 2){
            return s;
        }
        char[] charArray = s.toCharArray();
        int left = 0,right = len - 1;
        while(true){
            while(left < len && checkVowels(charArray[left])){
                left++;
            }
            while(right >= 0 && checkVowels(charArray[right])){
                right--;
            }
            if(left < right){
                swap(charArray,left,right);
                left++;
                right--;
            }else{
                break;
            }
        }
        return new String(charArray);
    }
    private void swap(char[] chars,int n ,int m){
        char tmp = chars[n];
        chars[n] = chars[m];
        chars[m] = tmp;
    }
    private boolean checkVowels(char c){
        return c!='a' && c!='e' && c!='i' && c!='o' && c!='u' && c!='A' && c!='E'&&c!='O'&&c!='I'&&c!='U';
    }
}