Leetcode Length of Last Word problem solution

In this Leetcode Length of Last Word problem solution we have given a string s consists of some words separated by some number of spaces, return the length of the last word in the string. A word is a maximal substring consisting of non-space characters only.

Problem solution in Python.

class Solution:
    def lengthOfLastWord(self, s):
        """
        :type s: str
        :rtype: int
        """
        return len(s.rstrip().split(' ')[-1])

Problem solution in Java.

class Solution {
    public int lengthOfLastWord(String s) {
        s = s.trim();
        return s.length() - s.lastIndexOf(" ") - 1; 
    }
}

Problem solution in C++.

class Solution {
public:
    int lengthOfLastWord(string s) {
      stringstream ss(s);
      string word;
      while(ss >> word) {
      }
      return word.size();
    }
};

Problem solution in C.

int lengthOfLastWord(string s)
    {
        string k;
        int count  = 0;
        int len = 0 ;
        for (int i = 0; i < s.length(); i++)
        {
            if (s[i] != ' ')
            {
                count++;
                len = count;
            }
            else
            {
                count = 0;
                if (len < count)
                {
                    len = count;
                }
            }
        }
        return len;
    }