58.length-of-last-word

Statement

``````输入：s = "Hello World"

``````

``````输入：s = "   fly me   to   the moon  "

``````

``````输入：s = "luffy is still joyboy"

``````

• `1 <= s.length <= 104`
• `s` 仅有英文字母和空格 `' '` 组成
• `s` 中至少存在一个单词

Given a string `s` consisting of some words separated by some number of 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 <= 104`
• `s` consists of only English letters and spaces `' '`.
• There will be at least one word in `s`.

Solution

``````class Solution:
def lengthOfLastWord(self, s: str) -> int:
s = s.strip(" ")
strs = s.split(" ")
return len(strs[-1])
``````