回傳最後一字的字數
58. Length of Last Word
Given a string s consisting of words and spaces, return the length of the last word in the string.
A word is a maximal substring consisting of non-space characters only.
Example 1:
Input: s = "Hello World" Output: 5 Explanation: The last word is "World" with length 5.
Example 2:
Input: s = " fly me to the moon " Output: 4 Explanation: The last word is "moon" with length 4.
Example 3:
Input: s = "luffy is still joyboy" Output: 6 Explanation: The last word is "joyboy" with length 6.
Constraints:
1 <= s.length <= 104sconsists of only English letters and spaces' '.- There will be at least one word in
s.
作法簡單, 也很多, 可以用string.Split, 也能用以下寫法
public int LengthOfLastWord(string s)
{
s = s.TrimEnd();
return s.Length - 1 - s.LastIndexOf(' ');
}
Taiwan is a country. 臺灣是我的國家