Java实现 洛谷 P1980 计数问题

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 n = sc.nextInt();
		int x = sc.nextInt();
		int g = 0;
		for (int i = 1; i <= n; i++) {
			String s = Integer.toString(i);
			for (int j = 0; j < s.length(); j++) {
				int a=s.charAt(j)-48;
				if (a == x) {
					g++;
				}
			}
		}
		System.out.println(g);
	}
}