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class ORM
    def save
        table_name = self.class

        instance_variable_names = self.instance_variables.map do |i|
            i.slice(1, i.length)
        end

        instance_variable_values = self.instance_variables.map do |i|
            self.instance_variable_get("#{i}")

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require 'active_record'
require 'pg'

ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Base.establish_connection(
    :adapter => "postgresql",
    :host     => 'ec2-54-204-41-178.compute-1.amazonaws.com',
    :username => 'bmdjwluxchptuq',
    :password => 'aEH-cKdr2zoXYUAjI8Xjma5eXK',

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require 'sinatra'
require 'nokogiri'
require 'open-uri'
require 'sinatra/json'
require 'json'

# sets the view directory correctly (to make it work with gists)
set :views, Proc.new { File.dirname(__FILE__) } 

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class ORM

    def save
        if defined? @id
            sql_update
        else
            sql_insert
        end
    end

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# An edit distance (e.d.) is defined as how many times you need to replace, add, or remove characters to match two strings.
# E.G. "train" and "brain" have e.d.=1
# "train" and "rain" have e.d.=1
# "train" and "trains" have e.d.=1
# Write a method that returns TRUE if edit distance is exactly 1, FALSE if not.

def edit_distance_is_one(word1, word2)

    i1 = 0
    i2 = 0

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# pat, tap, apt


def find_longest_anagram()
    words = File.open('/usr/share/dict/words').read
    anagrams = Hash.new { [] }

    most_so_far = 0
    most_signature = nil

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# runtime O(N^2)
# memory O(1)

def find_pair(numbers, sum)
    numbers.each_with_index do |n, i|
        numbers.each_with_index do |m, j|
            if n + m == sum
                return [n, m]
            end
        end

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# N is number of elements
# N

# O(N)

def find_index(number, numbers)
  numbers.each_with_index do |n, i|
    if n == number
        return i

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require 'sinatra'
require 'open-uri'
require 'sinatra/json'
require 'json'

# sets the view directory correctly (to make it work with gists)
set :views, Proc.new { File.dirname(__FILE__) } 

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# This example demonstrates how to generate SQL statements
# to fetch and save objects to a database.

# Warning: It does not do the actual database calls. just returns the statements.

class Book
    attr_accessor :id, :title, :author_id, :subject_id

    def initialize(id, title, author_id, subject_id)
        @id = id