58. 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.

Note: A word is defined as a character sequence consists of non-space characters only.

For example, 
Given s = "Hello World",

return 5.

My code:

    public int lengthOfLastWord(String s) {
        String[]  array = s.split(" ");
        if (array.length==0) return 0;
        return array[array.length-1].length();
    }

总结：你太机智了

Reference:

return s.trim().length()-s.trim().lastIndexOf(" ")-1;

总结：太聪明了。。。trim去掉字符串首尾的空格。太机智！！！