单词个数统计 （Java代码）

解题思路:





注意事项:
完美运行




参考代码:

import java.util.Scanner;

public class Main {

        public static void num(String str){

                String[] array = str.split("\\s++");

                System.out.println(array.length);

        }

        public static void main(String[] arg){

                @SuppressWarnings("resource")

                Scanner sc = new Scanner(System.in);

                 String str = sc.nextLine();

                 num(str);

        }

}