java - 如何找到字符串中最长的单词？

Question

我想找到给定字符串中最长的单词。

以下代码检查最长的单词，但我希望所有其他单词也具有相同的长度。

try (BufferedReader fileInputReader = new BufferedReader(new FileReader(filePath))){
    String line = fileInputReader.readLine();

    line = line.replaceAll("[^äÄöÖüÜßa-zA-Z ]", "");
    String[] sentence = line.split(" ");
    String longestWord = "";

    for (int i = 0; i < sentence.length; i++) {
        if (sentence[i].length() > longestWord.length()) {
            longestWord = sentence[i];
        }
    }

    System.out.println(longestWord);
}

Answer 1

然后您必须使用这些最长单词的集合，例如

  ArrayList<String> longestWords = new ArrayList<String>();
  int longestWordLength = 0;

  for (int i = 0; i < sentence.length; i++) {
      if (sentence[i].length() > longestWordLength) { // longer
          longestWordLength = sentence[i].length();
          longestWords.clear();
          longestWords.add(sentence[i]);       
      } 
      else if (sentence[i].length() == longestWordLength) { // same length
          longestWords.add(sentence[i]);       
      }
  }

  for (int i = 0; i < longestWords.size(); ++i) 
      System.out.println(longestWords.get(i));