java - 如何用星号替换文本中的特定单词“*"equal to the word' s 长度？

Question

在第一个输入行上，我有应该替换的单词。第二个输入行用于文本。

这是输入:

Linux, Windows

It is not Linux, it is GNU/Linux. Linux is merely the kernel, while GNU adds the functionality. Therefore we owe it to them by calling the OS GNU/Linux! Sincerely, a Windows client

这应该是输出:

It is not *****, it is GNU/*****. ***** is merely the kernel, while GNU adds the functionality. Therefore we owe it to them by calling the OS GNU/*****! Sincerely, a ******* client

这是我的代码:

String[] words = br.readLine().split(", ");
String text = br.readLine();

for (String word : words) {
    while (text.contains(word)) {    
        text = text.replace(word, "*");// i can replace only the first character in the word with asterisks.
    }
}
System.out.println(text);

Answer 1

你可以做这样的事情。这可以更有效地实现，但它足以满足您的任务。它基本上查找 Windows 和 Linux 的出现，并用给定字长的适当数量的星号替换它们。

String wordLinux = "Linux";
String wordWindows = "Windows";
String s = "It is not Linux, it is GNU/Linux. Linux is merely the kernel, while GNU adds the functionality. Therefore we owe it to them by calling the OS GNU/Linux! Sincerely, a Windows client";

StringBuilder sbLinux = new StringBuilder();
for (int idx = 0; idx != wordLinux.length(); ++idx)
    sbLinux.append("*");
s = s.replaceAll(wordLinux, sbLinux.toString());    

StringBuilder sbWindows = new StringBuilder();
for (int idx = 0; idx != wordWindows.length(); ++idx)
    sbWindows.append("*");
s = s.replaceAll(wordWindows, sbWindows.toString());    

System.out.println(s);

程序的输出结果:

这不是 *****，而是 GNU/*****。 ***** 只是内核，而 GNU 添加了功能。因此，我们将操作系统称为 GNU/***** 来感谢他们!此致，******** 客户