题解 | #统计字符#

import java.util.*;


public class Main {
    public static void main(String[] args) {
        Scanner fzhinput = new Scanner((System.in));
        String zfc = fzhinput.nextLine();
        int zmnum=0,spacenum=0,nnum=0,qtnum=0;
        for(int i=0;i<zfc.length();i++){
            char c = zfc.charAt(i);
            if(Character.isLetter(c)){
                zmnum++;
            }
            else if(c ==' '){
                spacenum++;
            }
            else if(Character.isDigit(c)){
                nnum++;
            }
            else{
                qtnum++;
            }

        }
        System.out.println(zmnum);
        System.out.println(spacenum);
        System.out.println(nnum);
        System.out.println(qtnum);
    }
}