题解 | #统计字符#

import java.util.Scanner;

public class Main { public static void main(String[] args) {

    Scanner scanner = new Scanner(System.in);
    String str = scanner.nextLine();        
    //英文
    String aStr = str.replaceAll("([A-Za-z])", "");
    int aCount = str.length() - aStr.length();
    System.out.println(aCount);

    //空格
    String kongStr = str.replaceAll(" ", "");
    int kongCount = str.length() - kongStr.length();
    System.out.println(kongCount);

    //数字
    String numStr = str.replaceAll("([0-9])", "");
    int numCount = str.length() - numStr.length();
    System.out.println(numCount);

    //其他
    System.out.println(str.length() - aCount - kongCount - numCount);
}

}