使用正则表达式查找元音

Question

Looking for Maximum length of string which have maximum length with all vowels,

For Example :-

    aeiaaioooaauuaeiou
response :- 
    aeiou
    aeeiou
    aaaaeiou
    aaeiou
    aaeiou
    aeiiou
    ...
    aeiiooouuu
    ...
    aeiiooouuu

But result will be (aeiiooouuu) 10,

I'm unable to get single and repeted charater

My code :- 

    String str ="aeiaaioooaauuaeiou";
    Pattern p = Pattern.compile("([aAeEiIoOuU])\\1{0,}");

    Matcher m =p.matcher(str) ;
    while (m.find()) {
        System.out.println(m.group());
    }

Answer 1

A more accurate pattern could be [aAeEiIoOuU]+ . You might want to look at quantifiers in regular expressions. This pattern is greedy so it will return the largest possible match.