58. Length of Last Word

问题描述：
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.

java代码：

public class Solution {    public int lengthOfLastWord(String s) {        String s1 = s.trim();        String[] ss = s1.split(" ");        int length = ss.length;        return ss[length-1].length();    }}