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 sc = new Scanner(System.in);
        String str = sc.nextLine();
	  //split the word
        String[] arr = str.split(" ");
	  //take the last word's length
        String res = arr[arr.length-1];
        System.out.println(res.length());
    }
}