Question

我有一个单词列表，存储在一个单词列表中。

private String[] words = new String[]{"world", "you"};

然后我有一个字符串helloWorld

private String helloWorld = "Hello world how are you?";

我想创建一个将接受字符串的函数（在本例中为helloWorld），它看起来不区分大小写，以查看words列表中是否存在任何字符串。如果存在，它将在匹配字符串的每个字母之间放置一个*字符。

例如输出将是

Hello w*o*r*l*d how are y*o*u?，因为world和you都在列表中。

传递"Hello"只会返回未修改的字符串"Hello"，因为字符串words中没有任何内容。

我将如何去做？我曾尝试对每个单词的字符串进行.replaceAll（）调用的硬编码，但随后我丢失了字符串的大小写。例如。 "Hello world how are you?"成为"hello w*o*r*l*d how are y*o*u?"

Answer 1

此代码：

private static String[] words = new String[]{"world", "you"};
private static String helloWorld = "Hello world how are you?";

public static String getHello() {
    String s = helloWorld;
    for (String word : words) {
        int index = s.toLowerCase().indexOf(word.toLowerCase());
        if (index >= 0) {
            String w = s.substring(index, index + word.length());
            StringBuilder sb = new StringBuilder();
            sb.append(s.substring(0, index));
            for (int i = 0; i < w.length(); i++) {
                sb.append(w.charAt(i));
                if (i < w.length() - 1)
                    sb.append("*");
            }
            sb.append(s.substring(index + w.length()));
            s = sb.toString();
        }
    }
    return s;
}

public static void main(String[] args) {
    System.out.println(getHello());
}

打印：

Hello w*o*r*l*d how are y*o*u?

Answer 2

      String  helloWorld = "hello world  how are you ";
      String[] words = new String[]{"world", "you"};


         String newWord = "";
         String words1[]= helloWorld.split(" ");
 for (int i = 0;i< words.length;i++){

    for (int j=0;j<words1.length;j++){

           if (words1[j].equals(words[i])){

               for (int k = 0 ; k < words1[j].length(); k++){
                  char character = words1[j].charAt(k);
                  newWord+=character;
                  newWord += "*";
           }
               words1[j] = newWord;
               newWord= "";

        }



   }

}
String str = Arrays.toString(words1);
System.out.println(str);

}

在Java中的字符串子字符串之间插入字符

2 个答案: