Leetcode刷题C#版之 Length of Last Word
Leetcode刷题C#版之 Length of Last Word
题目:
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.
Example:
Input: "Hello World" Output: 5
C#版本的代码如下(关键步骤已经注释):
public static int LengthOfLastWord(string s) { //将字符串分隔开 string[] midtest = s.Split(' '); int result=0; //从最末尾一个开始向前搜索第一个非空值 for (int i = midtest.Length - 1; i >= 0; i--) { string test = midtest[i]; //找到第一个不为空的情况 if (!string.IsNullOrEmpty(test)) { result = test.Length; break; } } return result; }
再次运行时间为最少的,小嘚瑟,哈哈