[LeetCode] 58. Length of Last Word

Problem : https://leetcode.com/problems/length-of-last-word/

It looks easy but need to consider the case that there are white spaces on the end of string.

class Solution(object):
    def lengthOfLastWord(self, s):
        """
        :type s: str
        :rtype: int
        """
        
        result = 0
        for i in reversed(range(len(s))):
            if s[i] == ' '  and result > 0:
                break

            if s[i] != ' ':
                result += 1
        
        return result