Length of Last Word

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.

public class Solution {
    public int lengthOfLastWord(String s) {
        int len = s.length();
        int count=0;
        for(int i=len-1;i>=0;i--){
            if(s.charAt(i)==' '&&count==0)continue;
            else if(s.charAt(i)==' '){
                break;
            }
            else{
                count++;
            }
        }
        return count;
    }
}