58. Length of Last Word

    public static int lengthOfLastWord(String s) {        if(s == null || s.length() == 0) {            return 0;        }        String[] str= s.split(" ");        int i = 0;        int len = 0;        for(i = str.length - 1; i >=0; i--) {            if(str[i].length() > 0) {                len = str[i].length();                break;            }        }        return len;    }