length_of_the_shortest_word.rb

def find_short(s)
    s = s.split(" ")
    l = []
    s.each do |word|
        l << word.length
    end 
    l = l.min
    return l # l: length of the shortest word
end

p find_short("bitcoin take over the world maybe who knows perhaps")
# => 3
# link https://www.codewars.com/kata/shortest-word/train/ruby