Name: Length of Last Word
Difficulty: Easy
Description: Find the length of the last word

Example:

Input: s = "   fly me   to   the moon  "
Output: 4
Explanation: The last word is "moon" with length 4.

int lengthOfLastWord(string s) {
    auto i = s.end() - 1;
    while(*i == ' ') --i;

    auto j = i - 1;
    while (j >= s.begin() && *j != ' ') --j;

    return i - j;
}