字串統計

水題，一步一個腳印。。

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        sc.nextLine();
        while(num-- > 0)
        {
            int count = 0;
            String line = sc.nextLine();
            for(int i = 0;i < line.length();i++)
            {
                char ch = line.charAt(i);
                if(ch >= '0' && ch <= '9')
                {
                    count++;
                }
            }
            System.out.println(count);
        }
    }

}