题解 | #在字符串中找出连续最长的数字串#

import java.util.*;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            String str = sc.nextLine();
            int maxLen = 0;
            int len = 0;
            //int index = 0;
            int len2 = 0;
            for(int i = 0; i < str.length(); i++){
                if((str.charAt(i)+"").matches("[0-9]")){
                    len++;
                }else if((str.charAt(i)+"").matches("[^0-9]")){
                    if(maxLen < len){
                        maxLen = len;
                        //index = i;
                    }
                    len = 0;
                }else{}
                if(maxLen < len){
                    maxLen = len;
                    //index = i;
                }
            }
            
            for(int i = 0; i < str.length(); i++){
                if((str.charAt(i)+"").matches("[0-9]")){
                    len2++;
                    if(len2 == maxLen){
                        System.out.print(str.substring(i+1-maxLen, i+1));
                        len2 = 0;
                    }
                }else if((str.charAt(i)+"").matches("[^0-9]")){
                    len2 = 0;
                }else{}
            }
            System.out.println(","+maxLen);
        }
    }
}