java - JAVA在字符串中找到最大和最小的单词

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    public class maxWord {
    public static void main(String[] args) {
        String str = "“@2434 rfdfd4f fff“";
        System.out.println(maxWord(str));
        System.out.println(minWord(str));
    }

    public static String maxWord(String input){
        String[] str = input.split(" ");
        if (str.length==0) return null;
        String longest=" ";
        for (String word:str){

            if (word.length()>longest.length()) {
                longest=word;

            }
        }
        return longest;
    }

    public static String minWord(String input){
        String[] str = input.split(" ");
        String shortest=" ";
        for (String word:str){
            if (word.length()<shortest.length()) {
                shortest=word;

            }
        }
        return shortest;
    }
}

我在这里有2种方法，它们几乎相似，但是minWord没有显示最小的单词，哪里出了错误？

其实不要不明白哪里出了问题，希望您能帮我

最佳答案

您可以使用流来在一行中进行操作：

public static void main(String[] args) {
    String string = "This is a long sentence";
    List<String> wordList = Arrays.asList(string.split("\\s+"));

    String shortest = wordList
            .stream()
            .min(Comparator.comparingInt(String::length))
            .orElse(null);
    System.out.println(shortest); //prints "a"

    String longest = wordList
            .stream()
            .max(Comparator.comparingInt(String::length))
            .orElse(null);
    System.out.println(longest); //prints "sentence"
}