class Solution:
def lengthOfLastWord(self, s: str) -> int:
s1 = s.split()
return len(s1[-1])
class Solution:
def plusOne(self, digits: List[int]) -> List[int]:
s = ''.join(str(i) for i in digits)
s = int(s) + 1
return list(int(i) for i in str(s))