[LeetCode58] Length of Last Word

题目：

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.

分类：String

代码：

class Solution {
public:
    int lengthOfLastWord(string s) {
        string word;
        string res;
        stringstream ss(s);
        while(!ss.eof())
        {
            ss >> word;
            res = word;
        }
        if(res.empty())
            return 0;
        else
            return res.size();
    }
};