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.

Note: A word is defined as a character sequence consists of non-space characters only.

For example,
Given s = "Hello World",
return 5. （Easy）

分析：

注意把最后的空格处理掉即可。

代码：

 class Solution {

 public:

     int lengthOfLastWord(string s) {

         int start = s.size() - ;

         int result = ;

         while (s[start] == ' ') {

             start--;

         }

         for (int i = start; i >= ; --i) {

             if (s[i] != ' ') {

                 result++;

             }

             else {

                 return result;

             }

         }

         return result;

     }

 };

巴特西

LeetCode58 Length of Last Word

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