题解 | #在字符串中找出连续最长的数字串#

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 sc = new Scanner(System.in);
        while (sc.hasNext()) {
            String text = sc.next();
            String[] arr = text.split("[a-zA-Z]");
            int ans = 0;
            StringBuilder res = new StringBuilder();
            for (String s : arr) {
                if (s.length() > ans) {
                    ans = s.length();
                    res = new StringBuilder(s);
                } else if (s.length() == ans) {
                    res.append(s);
                }
            }
            System.out.printf("%s,%d\n", res, ans);
        }
    }
}