Length of Last Word

class Solution {public:    int lengthOfLastWord(const char *s) {        int len=strlen(s);        int start=0;        int end=0;        bool wordStart=false;        bool wordEnd=false;        for(int i=len-1;i>=0;--i)        {            if((wordEnd)&&(s[i]==' '))            {                wordStart=true;                start=i+1;                break;            }            if(s[i]==' ')            {                continue;            }            if(!wordEnd)            {                end=i+1;                wordEnd=true;            }                    }        return end-start;    }};