Leetcode-length-of-last-word

题目描述

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",

return5.
 

找一串字符串最后一个单词的的长度。

 

我的方法是：以“ ”为分隔符，得出字符串数组，计算出最后一个元素长度即可。

 

public class Solution {
public int lengthOfLastWord(String s) {
if(s.equals(" ") || s == null)
return 0;
String[] strArr = s.split(" ");
if(strArr.length == 0)
return 0;
return strArr[strArr.length-1].length();
}
}