McTano

def count_letters(string)
  letters = Hash.new {|hash, key| hash[key] = [] }
  string.chars.each_with_index do |c, i|
    letters[c] << i
  end
  letters
end

puts count_letters("Hello World")
puts count_letters("I'm the goddamn batman.")

McTano

list = {'yvr' => 'Vancouver', 'yba' => 'Banff', 'yyz' => 'Toronto', 'yxx' => 'Abbotsford', 'ybw' => 'Calgary'}

# Why is it returning nil instead of first element of the list above
# p list[0] treats 0 as a key, not an integer index.
# we can call the first element like so, assuming we want the value.

#p list.values[0]

# if we want the key, we can do it like so:

McTano

# Sort the array from lowest to highest
def sort(arr)
  arr.sort
end

def swap(arr, x, y)
  temp = arr[x]
  arr[x] = arr[y]
  arr[y] = temp
end

McTano

# checks for all the conditions that make shakil momentarily shut up.
def said_magic_words?(input)
  input.include?("treat") ||
    input.include?("shakil") && input.include?("stop")
end

# fancy prompt a la James
def prompt
  print "> "
  gets.chomp.downcase

McTano

# must be baller and either furnished or rent cheaper than 2100
def rent?(furnished, rent, baller)
  baller && (furnished || rent < 2100)
end

###
# Add your "test" ("driver") code below in order to "test drive" (run) your method above...
# The test code will call the method with different permutations of options and output the result each time.
# This way, you will be able to run the renter.rb file from the CLI and look at the output of your "tests" to validate if the method works.
# Without the test code, it will be hard for you to know if this method is working as it should or not.

McTano

=begin
The normal way:

def fizzbuzz(first, last)
  first.upto(last) do |i|
    if dividesby?(i,3) && dividesby?(i,5)
      puts "FizzBuzz"
    elsif dividesby?(i,3)

McTano

require 'pry'
# Find the maximum 
def maximum(arr)
# arr.max
  big = arr[0]

  arr.each do |x|
    big = x if big < x
  end
  big