题解 | 在字符串中找出连续最长的数字串

s= input()
len=0
max=0
ls=[]
for index,i in enumerate(s):
    if not i.isdecimal():
        len=0
    else:
        len+=1
        if len>max:
            max=len
            ls.clear()
            ls.append(s[index-len+1:index+1])
        elif len==max:
            ls.append(s[index-len+1:index+1])
for i in ls:
    print(''.join(i),end='')
print(f",{max}")