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 {
public:
int lengthOfLastWord(string s)
{
if (s.size() == 0)
return 0;
int count = 0;
for (auto iter = s.crbegin(); iter != s.crend(); ++iter)
{
if (*iter == ' ' && count != 0)
break;
if (*iter != ' ')
++count;
}
return count;
}
};
