题解 | #字符串最后一个单词的长度#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = "";
        while (in.hasNext()) { 
            s = in.next();//in.next()自动读取到下一个空格，循环只留下最后一个；
        }
        System.out.println(s.length());
    }
}