题解 | #字符串最后一个单词的长度#

import java.util.Scanner;
import java.util.LinkedList;
import java.util.List;

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

        String zfc = scanner.nextLine(); // 命令字符串

        StringBuilder stack = new StringBuilder(); // 栈

        for (int i=0;i<zfc.length();i++){
            char c = zfc.charAt(i);
            if (c==' '&&stack.length()!=0){
                stack.setLength(0);
            }
            else{
                stack.append(c);
            }
        }
        System.out.println(stack.length());
    }
}