题解 | #判断各类型字符个数#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int numbers = 0;
        int words = 0;
        int space = 0;
        int other = 0;
        Scanner scanner = new Scanner(System.in);
        String str = scanner.nextLine();
        char arr[] = str.toCharArray();
        for(int i = 0; i < arr.length;i++){
            if((arr[i] >= 'a' && arr[i] <= 'z') || (arr[i] >= 'A' && arr[i] <= 'Z'))    {
                words ++;
            }else if(arr[i]>= '0' && arr[i] <= '9'){
                numbers++;
            }else if(arr[i] ==  ' '){
                space++;
            }else{
                other++;
            }

        }

        //write your code here......
        

        System.out.println("英文字母"+words+"数字"+numbers+"空格"+space+"其他"+other);
    }
}