58. Length of Last Word

problem

Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string.

If the last word does not exist, return 0.

Note: A word is defined as a character sequence consists of non-space characters only.

For example, 
Given s = "Hello World",
return 5.

用空格分割字符串，返回最后一个单词的长度

solution

• 注意空字符就行了

class Solution(object):
    def lengthOfLastWord(self, s):
        """
        :type s: str
        :rtype: int
        """
        s = s.split()
        return 0 if len(s) == 0  else len(s[-1])