idimitrov07

class Item 
	def initialize(item_name)
		@item_name = item_name
	end

	# def show
	# 	puts "Instance method show for '#{self}'"
	# end

	# def to_s

idimitrov07

class Animal
  def move
    "I can move"
  end
end

class Bird < Animal
  def move
    super + " by flying"
  end

idimitrov07

class Rectangle
  def initialize(length, breadth)
    @length = length
    @breadth = breadth
  end

  def perimeter
    2 * (@length + @breadth)
  end
end

idimitrov07

require "benchmark"

def calculation_with_explicit_block(a, b, operation)
	operation.call(a, b)
end

def calculation_with_implicit_block(a, b)
	yield(a, b)
end

idimitrov07

def number_shuffle(number)
  no_of_combinations = number.to_s.size == 3 ? 6 : 24
  digits = number.to_s.split(//)
  combinations = []
  combinations << digits.shuffle.join.to_i while combinations.uniq.size!=no_of_combinations
  combinations.uniq.sort
end

# Given: 123 
# Return: [123, 132, 213, 231, 312, 321]

idimitrov07

class MyArray
  attr_reader :array

  def initialize(array)
    @array = array
  end

  def sum(initial_value = 0)
    return array.inject(0) {|sum, el| sum + el } + initial_value unless block_given?
    sum = initial_value

idimitrov07

class Restaurant
  def initialize(menu)
    @menu = menu
  end

  def cost(*orders)
    # your code here
    orders.inject(0) do |total_cost, order|
      total_cost + order.keys.inject(0) {|cost, key| cost + @menu[key]*order[key] }
    end

idimitrov07

module Perimeter
  # Your code here
  def perimeter
    sides.inject(0) {|sum, side| sum + side}
  end
end

class Rectangle
  # Your code here
  include Perimeter

idimitrov07

def calculate(*numbers)
  #p numbers
  if numbers[-1].is_a?(Hash)  
    return subtract(*(numbers[0...-1])) if numbers[-1][:subtract]
    return add(*(numbers[0...-1])) if numbers[-1][:add]
  else
    add(*numbers)
  end
end

idimitrov07

function replaceWord(word){
    var asterics = "";
    for(var i = 0; i < word.length; i++){
        asterics += "*";
    }
    return asterics;
}

function maskOutWords(words, text){
    var maskedWord;