java - Java 句子中最短和最长的单词

Question

我是 Java 编程新手!因此试图解决一个问题，找到句子中最短和最长的单词。我的程序如下所示。我希望你们能为我的项目指明正确的方向 -

public class StringProblems {
    void shortAndLongWord(String str) {
        String sw = "", lw = "";
        int s = str.length(), l = 0;
        String words[] = str.split(" ");

        for(String word:words) {
            if(word.length()<s)
                sw = word;
            else if(word.length()>l)
                lw = word;
        }

        System.out.println("LONGEST WORD : "+lw);
        System.out.println("SHORTEST WORD : "+sw);
    }

    public static void main(String[] args) {
        Scanner scr = new Scanner(System.in);

        StringProblems obj = new StringProblems();
        System.out.printf("Enter a line to get shortest and longest word:");
        String str = scr.nextLine();
        str += " ";
        obj.shortAndLongWord(str);
    }
}

该程序的输出是:*输入一行以获得最短和最简单的单词:This is Sentence

最长的单词:最短的单词:句子**

我不知道我的逻辑哪里出了问题!请帮我解决!

Answer 1

你必须不断更新当前最短和最长单词的长度:

public class StringProblems {
    void shortAndLongWord(String str)
    {
        if (str == null)
            return;
        String sw="",lw="";
        int s=str.length(),l=0;
        String words[]=str.split(" ");
        for(String word:words)
        {
                if(word.length()<s)
                {
                        sw=word;
                        s = word.length();
                }
                if(word.length()>l)
                {
                        lw=word;
                        l = word.length();
                }
        }
        System.out.println("LONGEST WORD : "+lw);
        System.out.println("SHORTEST WORD : "+sw);
    }
    public static void main(String[] args) {
        Scanner scr=new Scanner(System.in);
        StringProblems obj=new StringProblems();
        System.out.printf("Enter a line to get shortest and longest word:");
        String str=scr.nextLine();
        str+=" ";
        obj.shortAndLongWord(str);
    }
}