题解 | #统计字符#简单题重拳出击

import java.io.*;
import java.util.*;
public class Main{
    public static void main(String[] args) throws Exception{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
        String str = br.readLine();
        char[] ch = str.toCharArray();
        int[] count=new int[4];
        for(char t:ch){
            if(Character.isLetter(t)) count[0]++;
            else if(Character.isSpace(t)) count[1]++;
            else if(Character.isDigit(t)) count[2]++;
            else count[3]++;
        }
        for(int s:count){
            out.println(s);
            out.flush();
        }
    }
}