Flow & Array

acron.rb

def acronomize(sentence)
  return "" if sentence == ""

  #retrieve each word from sentence (from string to array)
  sentence_array = sentence.split(" ")
  
  #take just first letter from each word and capitalize
  acronym = []
  sentence_array.each do |word|
    #store in new array
    acronym.push(word[0].upcase)
  end
  
  #join array and return (as string!)
  return acronym.join
end

puts acronomize("be right back")
puts acronomize("laugh out loud")
puts acronomize("be right back") == "BRB"
puts acronomize("laugh out loud") == "LOL"
puts acronomize("") == ""

paper_rock_scissor.rb

# Define our OPTIONS
OPTIONS = ["rock", "paper", "scissors"] # OPTIONS is a Constant

# Computer input
computer = OPTIONS.sample

# User input
puts "Choose an option: #{OPTIONS.join(" - ")}"
choice = gets.chomp

# Compare the choices + display the outcome
if choice == computer
  puts "Draw"
elsif (choice == "rock") && (computer == "scissors") ||
  (choice == "paper") && (computer == "rock") ||
  (choice == "scissors") && (computer == "paper")
  puts "You win!"
else
  puts "You lose!"
end