[编程入门]字符串分类统计-题解（Java代码）

解题思路:

注意事项:

参考代码:

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner scanner=new Scanner(System.in);
        String n=scanner.nextLine();
        char a[]=n.toCharArray();
        int word=0,digit=0,space=0,other=0;
        for(int i=0;i<a.length;i++)
        {
            if(Character.isLetter(a[i]))
                word++;
            else if(Character.isDigit(a[i]))
                digit++;
            else if(a[i]==' ')
                space++;
            else 
                other++;
        }
        System.out.print(word+" "+digit+" "+space+" "+other);
    }
}