LeetCode： Length of Last Word

Question

Given a string s consists of some words separated by spaces, return the length of the last word in the string. If the last word does not exist, return 0.

A word is a maximal substring consisting of non-space characters only.

Example 1:

Input: s = "Hello World"

Output: 5

Solution#1

def length_of_last_word(s)
  last_word = s.split(" ")
  last_word.empty? ? 0 : last_word.last.length
end

Solution#2

def length_of_last_word(s)
  if s.split(' ').length == 0
    return 0
  else
    s.split(' ').last.length
  end
end