Length of Last Word Problem Solution

Length of Last Word Problem: Given a string s consisting of words and spaces, return the length of the last word in the string.

A word is a maximal substring consisting of non-space characters only.

Example :

Input: s = "Hello World"
Output: 5
Explanation: The last word is "World" with length 5.

Length of Last Word Problem Solution

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;
    }