[LeetCode 58]Length of Last Word

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.

python 代码：

def length(x):    val=''.join(x.split())    if val == '':        return 0    else:        return len(x.split()[-1])