题解 | #表示数字#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        while (scanner.hasNextLine()) {
            String line = scanner.nextLine();
            pickUpNumber(line);
        }
    }

    public static void pickUpNumber(String line) {
        System.out.println(line.replaceAll("([0-9]+)", "*$1*"));
    }
}