58\. Length of Last Word

Easy

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:**

*   <code>1 <= s.length <= 10<sup>4</sup></code>
*   `s` consists of only English letters and spaces `' '`.
*   There will be at least one word in `s`.