leetcode-----58. 最后一个单词的长度

• 链接：https://leetcode-cn.com/problems/length-of-last-word/

代码

class Solution {
public:
    int lengthOfLastWord(string s) {
        int ans = 0, last = 0;
        for (int i = 0; i < s.size(); ++i) {
            if (s[i] == ' ') {
                if (last) ans = last;
                last = 0;
            } else {
                last++;
            }
        }
        if (last) ans = last;
        return ans;
    }
};