CODEWITHSUNDEEP
javaarraysstringreplacechar
Aztolz
Aztolz

Reputation: 33

Add text before every vowel

Hello I'm trying to add the String OB before every vowel(A,E,I,O,U) in my text. I can assume that the text is made up of all capital letters, no spaces or punctuation. These are handled by other methods I was able to create.

This is what I have so far: 

public static String obify(String s){

    String text = s;
    String[] capVowels = {"A", "E", "I", "O", "U"};
    for (String vow : capVowels){
        text = text.replace(vow, "OB" + vow);
    }
    return text;
}

but when I pass it a sting it prints two OB before the first vowel. Example input: HELLOWOLD , output: HOBOBELLOBOWOBOLD

Any help would be appreciated with an explanation.

Upvotes: 3

Views: 1310

Answers (1)

Phil
Phil

Reputation: 164913

You can use a regular expression character class to replace all the vowels with "OB{vowel}" via String#replaceAll. For example

final String test = s.replaceAll("[AEIOU]", "OB$0");

The $0 represents the matched string, ie the vowel.

The reason you're getting duplicate "OB" strings in the result is because of your for-loop. The problem is you add more vowels with each iteration, ie the "O" in "OB", so when you get up to your "O" iteration, it's replacing the ones you added.

Upvotes: 4

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