haritak

#!/usr/bin/env ruby

# https://www.theodinproject.com/lessons/ruby-linked-lists

class Node
  attr_accessor :value
  attr_accessor :next_node
  def initialize( *options )
    case options
    in [Object=>value, Node=>next_node]

haritak

def factorial( n )
  return 1 if n <= 1

  return n*factorial( n-1 )
end

puts factorial(2)
puts factorial(3)
puts factorial(4)

haritak

module Enumerable
  # Your code goes here
  def my_each_with_index
    counter = 0
    self.each do |element|
      yield element, counter
      counter += 1
    end
  end

haritak

require 'json'
class Hangman
  def Hangman.restore_game
    hg = Hangman.new
    saved_games = Dir.glob "*.hangman"
    if saved_games.length>0
      puts "Would you like to restore a game ?"
      if gets.strip.downcase.include? "y"
        puts saved_games
        puts "Enter filename to restore: "

haritak

# https://www.theodinproject.com/lessons/ruby-event-manager

require 'csv'
require 'google/apis/civicinfo_v2'
require 'erb'

civic_info = Google::Apis::CivicinfoV2::CivicInfoService.new
civic_info.key = 'AIzaSyClRzDqDh5MsXwnCWi0kOiiBivP6JsSyBw'
template_letter = File.read 'form_letter.html.erb'
template = ERB.new template_letter

haritak

#!/usr/bin/env ruby

# https://www.theodinproject.com/lessons/ruby-mastermind

module Human
  def get_name
    puts "Hello #{self.class}. How should I call you ?"
    gets.strip
  end

haritak

#!/usr/bin/env ruby

# https://www.theodinproject.com/lessons/ruby-tic-tac-toe

class Board
  def initialize
    @cells = [
      "...",
      "...",
      "...",

haritak

#!/usr/bin/env ruby

# https://www.theodinproject.com/lessons/ruby-bubble-sort

def bubble_sort!( data )
  not_sorted_part = data.length-1
  not_sorted_part.downto( 1 ) do | last_index |
    last_index.times do | index |
      data[ index ], data[ index+1] = data[index+1], data[index] if data[ index ] > data[ index+1]
    end

haritak

#!/usr/bin/env ruby

# https://www.theodinproject.com/lessons/ruby-stock-picker

def stock_picker( prices )
  profits_all = []
  prices.each_with_index do | buy_price, buy_index |
    profits_when_bying_at_index = prices[buy_index..].each_with_index.map do | sell_price, sell_index |
      {buy: buy_index, sell: buy_index + sell_index, profit: sell_price - buy_price}
    end

haritak

#!/usr/bin/env ruby

# https://www.theodinproject.com/lessons/ruby-sub-strings

def substrings( sentence, dictionary )
  result = Hash.new(0)
  sentence.downcase.split(" ").each do |word|
    dictionary.each do |d|
      if word.include? d
        result[ d ] += 1