Description
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.
A word is defined as a character sequence consists of non-space characters only.
Example
Given s = "Hello World", return 5.
解题：返回最后一个单词，注意是要用一个变量缓冲一下，否则一个字符串的最后几个字符为空时，可能会丢失数据。代码如下：
public class Solution {
/**
* @param s: A string
* @return: the length of last word
*/
public int lengthOfLastWord(String s) {
// write your code here
int count = 0;
int res = 0;
for(int i = 0; i < s.length(); i++){
if( Character.isLetter(s.charAt(i)) ){
count++;
}else {
res = count;
count = 0;
}
}
if(count != 0)
return count;
else
return res;
}
}