kmandreza

Exercise 1 Deaf Grandma

We're going to model something a little silly: an interaction between you and your imaginary deaf grandma. She exhibits the following inexplicable behavior:

1.She can only hear you if you shout at her.
2.If you say something but don't shout, she'll shout right back: "HUH?! SPEAK UP, SONNY!"
3.If you do shout you're also out of luck, because she'll misunderstand you and shout back "NO, NOT SINCE 1983!"
4.She won't let you leave the room unless you say, politely, "I love ya, Grandma, but I've got to go." She may be deaf, but she can smell rude a mile away.
How should these behaviors map to code?

kmandreza

PART 1

By the end of the next two challenges you'll have a fully-functioning Sudoku solver that you can run from the command line.

Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 sub-grids that compose the grid (also called "boxes") contains all of the digits from 1 to 9.

The person who created the puzzle provides a partial solution so that some squares already have numbers. Typically, there are enough initial numbers to guarantee a unique solution.

Unsolved   Solved Sudoku

kmandreza

# Exercise 1
Define three local variables: home_address, home_city, and home_state. Define and assign them the values of your own personal home address, city, and state, respectively.

# Exercise 2
Explain the difference between the following lines of code in plain English. "Plain English" means use language Edward, your non-programming second cousin from Ames, IA, would understand.

If any of the lines are invalid, explain why.

first_name = "Khara"

kmandreza

class Flashcard #data structure
  attr_accessor :term, :definition
 
  def initialize(term,definition)
    @term=term 
    @definition=definition
  end
 
end
 

kmandreza

require_relative 'view'
require_relative 'FileReadWrite'

class Parser
  TODO_FILE = 'Todolist.txt'

  def initialize(user_input)
    @filerw = FileReadWrite.new(TODO_FILE)
    @list = get_list
    @viewer = Viewer.new

kmandreza

class FileReadWrite
  
  def initialize(filename)
    @filename = filename
  end

  def read_file
    File.open(@filename).readlines
  end

kmandreza

class Flashcard #data structure
  attr_accessor :term, :definition
 
  def initialize(term,definition)
    @term=term 
    @definition=definition
  end

end

kmandreza

require 'csv'
require 'date'
require 'yaml'
require 'json'

FILENAME = "people.csv"
NEW_FILE = "new_people.csv"
YAML_FILE = "people.yaml"
JSON_FILE = "people.json"

kmandreza

require 'csv'
require 'date'

FILENAME = "people.csv"
NEW_FILE = "new_people.csv"

class Person
  attr_reader :id, :first_name, :last_name, :email, :phone, :created_at
  # id,first_name,last_name,email,phone,created_at

kmandreza

class InputError < StandardError
end
 
class RPNCalculator
  DIGITS = /\A-?\d+\Z/
  ACCEPTABLE_INPUT = /\d+|[+*-\/]/
  def evaluate(list)
    list_array = list.split
    stack = []
    list_array.each do |element|