题解HJ40 | #统计字符#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        String s = in.nextLine();

        int count1 = 0;
        int count2 = 0;
        int count3 = 0;
        int count4 = 0;

        for (int i = 0; i < s.length(); i++) {
            if (s.charAt(i) >= 'A' && s.charAt(i) <= 'Z') count1++;
            else if (s.charAt(i) >= 'a' && s.charAt(i) <= 'z') {
                count1++;
            } else if (s.charAt(i) == ' ') {
                count2++;
            } else if (s.charAt(i) >= '0' && s.charAt(i) <= '9') {
                count3++;
            } else count4++;
        }

        System.out.println(count1);
        System.out.println(count2);
        System.out.println(count3);
        System.out.println(count4);
    }
}