java - 尝试在字符串中的每个元音之前添加一个字符

Question

我想在单词中的每个元音之前插入“ab”

例如，如果用户输入单词:fire它必须更改为:fabirabe但我的代码只在单词之前输入 ab，例如:abfire。我该如何解决这个问题？

这是我到目前为止的代码:

import java.util.Scanner;
public class Foothill
{ 
   // class variables shared by more than one method
    String prompt;
    static String strUserResponse;

    // main method
    public static void main (String[] args)
    {
        giveInstructions();
        getUserInput();  
        convertToTurkeyIrish();
        vowelCounter();
    }
    public static String convertToTurkeyIrish()
    {

        String turkeyIrish = strUserResponse;
        String turkeyIrish2;
        turkeyIrish2 = "ab" + strUserResponse.replaceAll("(aeiouAEIOU)", "$1ab");
        System.out.println("Word In Turkey Irish: " +  turkeyIrish2);
        return turkeyIrish;
    }

    public static void vowelCounter()
    {
        int vowel = 0;
        strUserResponse.length();
        char vowels;
        vowels = ' ';
        for (int j = 0; j <= strUserResponse.length() - 1 ; j++)
        {
            vowels = strUserResponse.charAt(j);
            if  ((vowels == 'a') || (vowels == 'A') || (vowels == 'e') ||   (vowel == 'E') || (vowel == 'i')|| (vowels == 'I') || (vowels == 'o')  (vowels == 'O') || (vowel == 'u') || (vowels == 'u'))
            {
                System.out.println("Vowels in " + strUserResponse + ": " + vowel++);
            }
        }
    }
}

Answer 1

您的正则表达式是错误的，替换字符串也是错误的。试试这个:

strUserResponse.replaceAll("([aeiouAEIOU])", "ab$1");