题解 | 在字符串中找出连续最长的数字串 | Python3 O(n)

s = input()

# Algo
endIs, maxLen = [], 0
curLen = 0
for i, ch in enumerate(s):
    if ch.isdigit():
        curLen += 1
        if curLen > maxLen:
            maxLen = curLen
            endIs = [i]
        elif curLen == maxLen:
            endIs.append(i)
    else:
        curLen = 0

print(''.join(s[i-maxLen+1:i+1] for i in endIs), maxLen, sep=',')