class Solution {
public:
    int lengthOfLastWord(string s) {
        int index = s.length()- 1;
        while (s[index] == ' '){
            index--;
        }

        int wordLength = 0;
        while(index >= 0 && s[index] != ' '){
            wordLength++;
            index--;
        }

        return wordLength;
    }
};