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+")