itzsaga

def oxford_comma(array)
  if array.length == 1
    return "#{array[0]}"
  elsif array.length == 2
    return array.join(" and ")
  elsif array.length >= 3
    new_last_array_item = "and #{array[-1]}"
    array.pop
    array.push(new_last_array_item)
    return array.join(", ")

itzsaga

def oxford_comma(array)
  if array.length == 1
    return "#{array[0]}"
  elsif array.length == 2
    return array.join(" and ")
  elsif array.length >= 3
    array[-1] = "and #{array[-1]}"
    return array.join(", ")
  end
end

itzsaga

# FIRST METHOD THAT PASSED
def reverse_each_word(array)
  new_array = array.split(" ")
  reversed_array = new_array.each {|x| x.reverse!}
  return reversed_array.join(" ")
end

# FIRST REFACTORED CODE
def reverse_each_word(array)
  new_array = array.split(" ")

itzsaga

def prime?(n)
  if n <= 1
    return false
  elsif n <= 3
    return true
  else (2..n/2).none? do |x|
    n % x == 0
  end
  end
end

itzsaga

def swap_elements_from_to(array, index, new_index)
  array[index], array[new_index] = array[new_index], array[index]
  return array
end

itzsaga

# Question 4 Bonus
describe 'swap_elements_from_to' do
  it 'swaps elements and allows you to specify the index of the element you would like to move to a new index' do
    expect(swap_elements_from_to(["one", "two", "three"], 2, 1)).to eq(["one", "three", "two"])
  end
end

itzsaga

NoMethodError:
undefined method `starts_with?' for "apple":String
Did you mean?  start_with?

itzsaga

# given that holiday_hash looks like this:
# {
#   :winter => {
#     :christmas => ["Lights", "Wreath"],
#     :new_years => ["Party Hats"]
#   },
#   :summer => {
#     :fourth_of_july => ["Fireworks", "BBQ"]
#   },
#   :fall => {

itzsaga

def all_holidays_with_bbq(holiday_hash)
  holiday_hash.map do |season, holidays|
    holidays.map do |holiday_name, supplies
      supplies.include?("BBQ") ? holiday_name : nil
    end
  end.flatten.compact
end

itzsaga

module Players
  class Computer < Player
    def move(board)
      possible_moves = ["1", "2", "3", "4", "5", "6", "7", "8", "9"]
      valid_moves = []
      possible_moves.each do |move|
        valid_moves << move if board.cells[move.to_i-1] = " "
      end
      valid_moves.sample
    end