LeetCode -- Length of last word

LeetCode -- Length of last word

題目描述：


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,
return 5.


在一個字符串中，統計最後一個單詞的長度。


1. 需要清空末尾字符串的空白字符
2. 直接統計


實現代碼：

public class Solution {
    public int LengthOfLastWord(string s) {
        s = s.TrimEnd();
        var len = 0;
    	for(var i = s.Length - 1;i >=0; i--){
    		if(s[i] == ' '){
    			return len;
    		}
    		len++;
    	}
    	
    	return len;
    }
}