// 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.

// For example, 
// Given s = "Hello World",
// return 5.

public class Solution {
    public int lengthOfLastWord(String s) {
    	int len = 0;
		for(int i = s.length() - 1; i > 0; i--){
			if(s.charAt(i) != ' '){
				len = 1;
				for(int j = i - 1; j >= 0; j--){
					if(s.charAt(j) != ' '){
						len++;
					}else{
						break;
					}
				}
				break;
			}
		}
		return len;       
    }
}
add length of last word solution