LeetCode 0058 - Length of Last Word

Length of Last Word

Desicription

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.

Example:

Input: "Hello World"
Output: 5

Solution

class Solution {
public:
    int lengthOfLastWord(string s) {
        int len = 0;
        for(int i = 0; s[i];){
            if(s[i++] != ' ')
                len++;
            else if(s[i] && s[i] != ' ')
                len = 0;
        }
        return len;
    }
};