MBM1607

def caesar_cipher(message, shift)
	split_message = message.split("").map do |letter|
		# If letter is not an alphabet do not change it
		if letter.downcase.ord < 97 or letter.downcase.ord > 128
			letter
		else
			code = letter.ord + shift
			if (letter == letter.upcase && code > 90) || (letter == letter.downcase && code > 122)
				code -= 26
			end

MBM1607

# Return a hash listing each substring present in the dictionary found in the string
def substrings(string, dictionary)
	count = Hash.new(0)
	dictionary.each do |word|
		count[word] = string.scan(/#{word}/).length if string.scan(/#{word}/).length != 0
	end
	puts count
end

MBM1607

def stock_picker(stocks)
	profits = {}

	stocks.each_with_index do |price_i, i|
		stocks.each_with_index do |price_j, j|
			profits[[i, j]] = price_j - price_i if j > i
		end
	end

	index, _ = profits.max_by { |k, v| v }

MBM1607

def bubble_sort(array)
	sorted = false
	until sorted do
		sorted = true
		array.each_with_index do |_, i|
			if i + 1 != array.length && array[i] > array[i + 1]
				array[i], array[i + 1] = array[i + 1], array[i]
				sorted = false
			end
		end

MBM1607

{
  "AF": "+93",
  "AX": "+358",
  "AL": "+355",
  "DZ": "+213",
  "AS": "+1684",
  "AD": "+376",
  "AO": "+244",
  "AI": "+1264",
  "AQ": "+672",