Leetcode: Length of last word

Length of Last Word | LeetCode OJ

Only trick here is to select the most efficient way of finding the last word

The below example solves the problem for sentences with space as delimiter. For any other delimiter replace the None with delimiter

Contant space and constant time complexity

class Solution(object):
    def lengthOfLastWord(self, s):
        """
        :type s: str
        :rtype: int
        """
        words = s.rsplit(None, 1)
        return len(words[-1]) if words else 0