【Leetcode】58. Length of Last Word

原题：

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) {        s = s.trim();        if(s.indexOf(' ')==-1){            return s.length();        }        return s.length() - s.lastIndexOf(' ') - 1;    }}

用Java处理字符串就跟开挂一样。。