LeetCode Length of Last Word

1. 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.

2.解决方案

class Solution {public:int lengthOfLastWord(const char *s) {int len = strlen(s);int result = 0;while(s[len-1]==’ ‘) len–;for(int i = len – 1; i >= 0; –i){if(s[i] != ‘ ‘){++result;}else{break;}}return result;}};思路：还是比较容易的，，就是要先把后面的‘ ’都先干掉。

其实，每个人都是幸福的。只是，你的幸福，常常在别人眼里。