QUESTION:

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.

EXPLANATION:

说真的，真的没有什么可以解释的，只是要多注意下length是0的情况。

SOLUTION:

public class Solution {
    public int lengthOfLastWord(String s) {
        String[] split = s.split(" ");
        return split.length==0?0:split[split.length-1].length();
    }
}