length-of-last-word

Length of Last Word

https://leetcode.com/problems/top-k-frequent-elements/description/

Problem Description

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.