题目-1002-字符串分类统计

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        
        while(in.hasNext()) {
            String s = in.nextLine();
            item(s);
        }
        in.close();
    
    }
    
    
    private static void item(String s) {
        int alphanumeric = 0; // 字母
        int number = 0;
        int space  = 0;
        int other = 0;
        
        for(int i = 0;i<s.length();i++) {
            if(s.charAt(i)>='a'&&s.charAt(i)<='z'||s.charAt(i)>='A'&&s.charAt(i)<='Z') {
                alphanumeric++; 
            }else if(s.charAt(i)>='0'&&s.charAt(i)<='9') {
                number++;
            }else if(s.charAt(i)==' ') {
                space++;
            }else {
                other++;
            }
        }
        System.out.println(alphanumeric+" "+number+" "+space+" "+other);
    }
}