题解 | #表示数字#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextLine()) {
            String input = in.nextLine();
            int flag = 0;
            for (int i = 0; i < input.length(); i++) {
                if (flag == 0 && input.charAt(i) >= '0' && input.charAt(i) <= '9') {
                    System.out.print("*");
                    flag = 1;
                }
                if (flag == 1 && (input.charAt(i) < '0' || input.charAt(i) > '9')) {
                    System.out.print("*");
                    flag = 0;
                }
                System.out.print(input.charAt(i));
                if (i==input.length()-1&&flag==1){
                    System.out.print("*");
                }
            }
        }
    }
}