# 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.


class Solution:
    # @param s, a string
    # @return an integer
    def lengthOfLastWord(self, s):
		if " " not in s:
			return len(s)
		sList = s.split(" ")
		lastIndex = len(sList) - 1
		lastWord = " "
		while lastWord == " " or lastWord == "":
			lastWord = sList[lastIndex]
			lastIndex = lastIndex - 1
			if lastIndex < 0:
			       break
		return len(lastWord)