第40题 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.

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  String

Code in Java：

public class Solution {
    public int lengthOfLastWord(String s) {
        if(s.length()==0) return 0;
        String[] words=s.split("\\s+");
        if(words.length>0)  return words[words.length-1].length();
        else return 0;
    }
}

Note：

按一个或多个字符分割字符串：str.split("\\s+")