题解 | #字符串最后一个单词的长度#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        System.out.println(Str());

    }
    public static int Str() {
        Scanner scanner = new Scanner(System.in);
        String s = scanner.nextLine();
        //System.out.println(s);//得到字符串

        int slow = 0;
        int faster = 0;
        for (; faster < s.length(); faster++) {
            if (s.charAt(faster) == ' ') {
                slow = faster;
            }
        }
        if(s.charAt(slow)!=' '){
            slow--;
        }
        return faster - slow - 1;
    }
}