蓝桥杯算法提高VIP-不同单词个数统计 （Java代码）

解题思路:

注意事项:

参考代码:

import java.util.*;

public class Main {

    public static void main(String[] args) {

            Scanner sc = new Scanner(System.in);

            String s = sc.nextLine();

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

            HashSet<String> set = new HashSet<String>();

            for (int i = 0; i < arr.length; i++) {

                    set.add(arr[i]);

                }

            System.out.println(set.size());

        }

}