leetcode Length of Last Word java实现

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) {
if(s.trim().equals("")|| s.length() == 0){
return 0;
}

String[] ss = s.trim().split(" ");
int len = ss.length;
return ss[len - 1].length();

}
}

这个题目的答案不难，但是需要注意考虑两种特殊情况，当s=""和s=" " ;这两种情况需要特别考虑，这就是我if语句里面判断的这两种情况。