Leetcode：Length of Last Word

考虑没周全

class Solution {
public:
    int lengthOfLastWord(const char *s) {
        // Start typing your C/C++ solution below
        // DO NOT write int main() function
        int len = strlen(s);
        int result=0;
        if(len==0) return 0;
        int begin =len;
        for(int i =0;i<len;i++)
        {
            if(s[i]!=' ')
            {
                begin = i;
                int j ;
                for(j=i+1;j<len;j++)
                   if(s[j]==' ')
                      break;
                result = j-begin; 
                i=j-1;
            }
        }
        return result;
    }
};