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 <= 104
• s consists of only English letters and spaces ‘ ‘.
• There will be at least one word in s.