题解 | #滑动窗口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 in = new Scanner(System.in);
        while(in.hasNext()){
            String line = in.nextLine();
       int left=0,right =0;
       int len=0;
       String ans="";
       while(right<line.length())
       {
                if(!Character.isDigit(line.charAt(right)))
                {
                 
                    right++;
                    left=right;
                }
                while(right<line.length()&& Character.isDigit(line.charAt(right)))
                {
                    right++;
                }

                    if(right-left>len){
                        len=right-left;

                            ans=line.substring(left,right);
                    }
                    else   if(right-left==len){
                        ans+=line.substring(left,left+len);
                    }

       }
        System.out.println(ans+","+len);
    }
    }
}