From a5cb7aaedbd091e26610c3e95beeeecfc12e156a Mon Sep 17 00:00:00 2001
From: stuartcooper <stucooper86@gmail.com>
Date: Mon, 5 Sep 2016 15:46:10 +0100
Subject: [PATCH 1/7] Adding Ch09

---
 ch09-writing-your-own-methods/ask.rb          | 30 +++++++++++++-
 .../old_school_roman_numerals.rb              | 16 +++++++-
 .../roman_numerals.rb                         | 39 ++++++++++++++++++-
 3 files changed, 79 insertions(+), 6 deletions(-)

diff --git a/ch09-writing-your-own-methods/ask.rb b/ch09-writing-your-own-methods/ask.rb
index 01716eb35..2e3879d71 100644
--- a/ch09-writing-your-own-methods/ask.rb
+++ b/ch09-writing-your-own-methods/ask.rb
@@ -1,3 +1,29 @@
 def ask question
-  # your code here
-end
\ No newline at end of file
+  while true
+    puts question
+    reply = gets.chomp.downcase
+
+      return true if reply == 'yes'
+      return false if reply == 'no'
+
+      puts 'Please answer "yes" or "no".'
+    end
+
+  answer # This is the return of true or false
+end
+puts 'Hello, and thank you for...'
+puts
+ask 'Do you like eating tacos?'
+ask 'Do you like eating burrittos?'
+wets_bed = ask 'Do you wet the bed?'
+ask 'Do you like eating chimichangas?'
+ask 'Do you like eating sopapillas?'
+puts 'Just a few more questions...'
+ask 'Do you like drinking horchata?'
+ask 'Do you like eating flautas?'
+
+puts
+puts 'DEBREIFING:'
+puts 'Thank you for...'
+puts
+puts wets_bed
diff --git a/ch09-writing-your-own-methods/old_school_roman_numerals.rb b/ch09-writing-your-own-methods/old_school_roman_numerals.rb
index ca6589f2d..a0d16a230 100644
--- a/ch09-writing-your-own-methods/old_school_roman_numerals.rb
+++ b/ch09-writing-your-own-methods/old_school_roman_numerals.rb
@@ -1,3 +1,15 @@
 def old_roman_numeral num
-  # your code here
-end
\ No newline at end of file
+  numeral = ''
+
+  numeral = numeral + 'M' * (num / 1000)
+  numeral = numeral + 'D' * (num % 1000 / 500)
+  numeral = numeral + 'C' * (num % 500 / 100)
+  numeral = numeral + 'L' * (num % 100 / 50)
+  numeral = numeral + 'X' * (num % 50 / 10)
+  numeral = numeral + 'V' * (num % 10 / 5)
+  numeral = numeral + 'I' * (num % 5 / 1)
+
+  numeral
+end
+
+puts old_roman_numeral(2016)
diff --git a/ch09-writing-your-own-methods/roman_numerals.rb b/ch09-writing-your-own-methods/roman_numerals.rb
index 5c93b59ac..9d8be19c7 100644
--- a/ch09-writing-your-own-methods/roman_numerals.rb
+++ b/ch09-writing-your-own-methods/roman_numerals.rb
@@ -1,3 +1,38 @@
 def roman_numeral num
-  # your code here
-end
\ No newline at end of file
+    thousand = (num / 1000)
+    hundred = (num % 1000 / 100)
+    ten = (num % 100 / 10)
+    one = (num % 10)
+
+    numeral = 'M' * thousand
+
+    if hundred == 9
+      numeral = numeral + 'CM'
+    elsif hundred == 4
+      numeral = numeral + 'CD'
+    else
+      numeral = numeral + 'D' * (num % 1000 / 500)
+      numeral = numeral + 'C' * (num % 500 / 100)
+    end
+
+    if ten == 9
+      numeral = numeral + 'XC'
+    elsif ten == 4
+      numeral = numeral + 'XL'
+    else
+      numeral = numeral + 'L' * (num % 100 / 50)
+      numeral = numeral + 'X' * (num % 50 / 10)
+    end
+
+    if one == 9
+      numeral = numeral + 'IX'
+    elsif numeral == 4
+      numeral = numeral = 'IV'
+    else
+      numeral = numeral + 'V' * (num % 10 / 5)
+      numeral = numeral + 'I' * (num % 5 / 1)
+    end
+    numeral
+end
+
+puts roman_numeral(2016)

From f08089e310758a4a258964f5627d231e9ea802cf Mon Sep 17 00:00:00 2001
From: stuartcooper <stucooper86@gmail.com>
Date: Tue, 6 Sep 2016 14:51:10 +0100
Subject: [PATCH 2/7] Adding shuffle challenge

---
 ch10-nothing-new/shuffle.rb | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

diff --git a/ch10-nothing-new/shuffle.rb b/ch10-nothing-new/shuffle.rb
index a486ad94c..e32c02922 100644
--- a/ch10-nothing-new/shuffle.rb
+++ b/ch10-nothing-new/shuffle.rb
@@ -1,3 +1,26 @@
 def shuffle arr
-  # your code here
-end
\ No newline at end of file
+  shuf = []
+#shuffle an array of any size above zero
+  while arr.length > 0
+    rand_index = rand(arr.length)
+#iterate each item placing all bar the random one in the new array which goes into shuf
+    curr_index = 0
+    new_arr = []
+
+    arr.each do |item|
+      if curr_index == rand_index
+        shuf.push item
+      else
+        new_arr.push item
+      end
+
+      curr_index = curr_index + 1
+    end
+      #call back new array instead of original array
+      arr = new_arr
+    end
+
+  shuf
+end
+
+puts(shuffle([1, 9, 2, 8, 3, 7, 4, 6, 5]))

From c802a301959338eccfe039370cf45ad2201d4ac9 Mon Sep 17 00:00:00 2001
From: stuartcooper <stucooper86@gmail.com>
Date: Tue, 6 Sep 2016 17:00:10 +0100
Subject: [PATCH 3/7] Adding Ch10

---
 ch10-nothing-new/dictionary_sort.rb           |  13 ++-
 ch10-nothing-new/english_number.rb            | 104 +++++++++++++++++-
 .../ninety_nine_bottles_of_beer.rb            |  79 ++++++++++++-
 ch10-nothing-new/shuffle.rb                   |   2 +-
 ch10-nothing-new/sort.rb                      |  30 ++++-
 5 files changed, 221 insertions(+), 7 deletions(-)

diff --git a/ch10-nothing-new/dictionary_sort.rb b/ch10-nothing-new/dictionary_sort.rb
index c9893d0fd..0988ba934 100644
--- a/ch10-nothing-new/dictionary_sort.rb
+++ b/ch10-nothing-new/dictionary_sort.rb
@@ -1,3 +1,12 @@
 def dictionary_sort arr
-  # your code here
-end
\ No newline at end of file
+  return arr if arr.length <= 1
+
+  middle = arr.pop
+  less = arr.select{|x| x.downcase < middle.downcase}
+  more = arr.select{|x| x.downcase >= middle.downcase}
+
+dictionary_sort(less) + [middle] + dictionary_sort(more)
+end
+
+words = ['hakuna', 'Matata', 'what', 'a', 'wonderful', 'phrase']
+puts(dictionary_sort(words).join(' '))
diff --git a/ch10-nothing-new/english_number.rb b/ch10-nothing-new/english_number.rb
index c0129bc4e..2a6b0f50c 100644
--- a/ch10-nothing-new/english_number.rb
+++ b/ch10-nothing-new/english_number.rb
@@ -1,3 +1,105 @@
 def english_number number
-  # your code here
+  if number < 0 # No negative numbers.
+    return 'Please enter a number that isn\'t negative.'
+  end
+
+  if number == 0
+    return 'zero'
+  end
+
+# No more special cases! No more returns!
+num_string = '' # This is the string we will return.
+ones_place = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine']
+tens_place = ['ten', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety']
+teenagers = ['eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen']
+
+zillions = [['hundred', 2],
+              ['thousand', 3],
+              ['million', 6],
+              ['billion', 9],
+              ['trillion', 12]]
+# "left" is how much of the number we still have left to write out.
+# "write" is the part we are writing out right now.
+# write and left!!
+
+left = number
+  while zillions.length > 0
+    zil_pair = zillions.pop
+    zil_name = zil_pair[0]
+    zil_base = 10 ** zil_pair[1]
+    write = left/zil_base # How many zillions left?
+    left = left - write*zil_base # Subtract off those zillions.
+
+    if write > 0
+      # Now here's the recursion:
+      prefix = english_number write
+      num_string = num_string + prefix + ' ' + zil_name
+
+      if left > 0
+      # So we don't write 'two billionfifty-one'...
+      num_string = num_string + ' '
+      end
+    end
+  end
+
+write = left/100 # How many hundreds left?
+left = left - write*100 # Subtract off those hundreds.
+  if write > 0
+# Now here's the recursion:
+    hundreds = english_number write
+    num_string = num_string + hundreds + ' hundred'
+
+    if left > 0
+# So we don't write 'two hundredfifty-one'...
+      num_string = num_string + ' '
+    end
+  end
+
+write = left/10 # How many tens left?
+left = left - write*10 # Subtract off those tens.
+
+if write > 0
+if ((write == 1) and (left > 0))
+# Since we can't write "tenty-two" instead of "twelve", we have to make a special exception
+# for these.
+num_string = num_string + teenagers[left-1]
+# The "-1" is because teenagers[3] is 'fourteen', not 'thirteen'.
+
+# Since we took care of the digit in the # ones place already, we have nothing left to write.
+left = 0
+  else
+    num_string = num_string + tens_place[write-1]
+# The "-1" is because tens_place[3] is 'forty', not 'thirty'.
+  end
+
+      if left > 0
+        # So we don't write 'sixtyfour'...
+        num_string = num_string + '-'
+      end
+    end
+
+write = left # How many ones left to write out?
+left = 0 # Subtract off those ones.
+
+if write > 0
+num_string = num_string + ones_place[write-1]
+# The "-1" is because ones_place[3] is 'four', not 'three'.
 end
+# Now we just return "num_string"...
+num_string
+end
+
+puts english_number( 0)
+puts english_number( 9)
+puts english_number( 10)
+puts english_number( 11)
+puts english_number( 17)
+puts english_number( 32)
+puts english_number( 88)
+puts english_number( 99)
+puts english_number(100)
+puts english_number(101)
+puts english_number(234)
+puts english_number(3211)
+puts english_number(999999)
+puts english_number(1000000000000)
diff --git a/ch10-nothing-new/ninety_nine_bottles_of_beer.rb b/ch10-nothing-new/ninety_nine_bottles_of_beer.rb
index 801de24bd..8278266c7 100644
--- a/ch10-nothing-new/ninety_nine_bottles_of_beer.rb
+++ b/ch10-nothing-new/ninety_nine_bottles_of_beer.rb
@@ -1 +1,78 @@
-# your code here
\ No newline at end of file
+# def english_number number
+  if number < 0 # No negative numbers.
+    return 'Please enter a number that isn\'t negative.'
+  end
+
+  if number == 0
+    return 'zero'
+  end
+
+# No more special cases! No more returns!
+num_string = '' # This is the string we will return.
+ones_place = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine']
+tens_place = ['ten', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety']
+teenagers = ['eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen']
+
+# "left" is how much of the number
+# we still have left to write out.
+# "write" is the part we are
+# writing out right now.
+# write and left...get it? :)
+
+left = number
+write = left/100 # How many hundreds left?
+left = left - write*100 # Subtract off those hundreds.
+  if write > 0
+# Now here's the recursion:
+    hundreds = english_number write
+    num_string = num_string + hundreds + ' hundred'
+
+    if left > 0
+# So we don't write 'two hundredfifty-one'...
+      num_string = num_string + ' '
+    end
+  end
+
+write = left/10 # How many tens left?
+left = left - write*10 # Subtract off those tens.
+
+if write > 0
+if ((write == 1) and (left > 0))
+# Since we can't write "tenty-two" instead of "twelve", we have to make a special exception
+# for these.
+num_string = num_string + teenagers[left-1]
+# The "-1" is because teenagers[3] is 'fourteen', not 'thirteen'.
+
+# Since we took care of the digit in the # ones place already, we have nothing left to write.
+left = 0
+  else
+    num_string = num_string + tens_place[write-1]
+# The "-1" is because tens_place[3] is 'forty', not 'thirty'.
+  end
+
+      if left > 0
+        # So we don't write 'sixtyfour'...
+        num_string = num_string + '-'
+      end
+    end
+
+write = left # How many ones left to write out?
+left = 0 # Subtract off those ones.
+
+if write > 0
+num_string = num_string + ones_place[write-1]
+# The "-1" is because ones_place[3] is 'four', not 'three'.
+end
+# Now we just return "num_string"...
+num_string
+end
+
+num_at_start = 10 # change to 9999 if you want
+num_now = num_at_start
+while num_now > 2
+  puts english_number(num_now).capitalize + ' bottles of beer on the wall, ' +
+    english_number(num_now) + ' bottles of beer!'
+  num_now = num_now - 1
+  puts 'Take one down, pass it around, ' +
+    english_number(num_now) + ' bottles of beer on the wall!'
+end
diff --git a/ch10-nothing-new/shuffle.rb b/ch10-nothing-new/shuffle.rb
index e32c02922..a941b573e 100644
--- a/ch10-nothing-new/shuffle.rb
+++ b/ch10-nothing-new/shuffle.rb
@@ -23,4 +23,4 @@ def shuffle arr
   shuf
 end
 
-puts(shuffle([1, 9, 2, 8, 3, 7, 4, 6, 5]))
+puts(shuffle([1,9,2,8,3,7,4,6,5]))
diff --git a/ch10-nothing-new/sort.rb b/ch10-nothing-new/sort.rb
index 44c6deb58..13e4eb8eb 100644
--- a/ch10-nothing-new/sort.rb
+++ b/ch10-nothing-new/sort.rb
@@ -1,3 +1,29 @@
 def sort arr
-  # your code here
-end
\ No newline at end of file
+    rec_sort arr, []
+  end
+
+  def rec_sort unsorted, sorted
+    if unsorted.length <= 0
+      return sorted
+    end
+    # So if we got here, then it means we still # have work to do.
+    smallest = unsorted.pop
+    still_unsorted = []
+
+    unsorted.each do |tested_object|
+      if tested_object < smallest
+        still_unsorted.push smallest
+        smallest = tested_object
+      else
+        still_unsorted.push tested_object
+      end
+    end
+
+    # Now "smallest" really does point to the
+    # smallest element that "unsorted" contained,
+    # and all the rest of it is in "still_unsorted". l
+    sorted.push smallest
+
+    rec_sort still_unsorted, sorted
+  end
+puts(sort([' can' ,' feel' ,' singing' ,' like' ,' a' ,' can' ]))

From d8b1e12699e7365b1962be9367f02e2d31f21d87 Mon Sep 17 00:00:00 2001
From: stuartcooper <stucooper86@gmail.com>
Date: Wed, 7 Sep 2016 15:55:23 +0100
Subject: [PATCH 4/7] Adding Ch11

---
 .../build_a_better_playlist.rb                | 50 +++++++++-
 .../build_your_own_playlist.rb                | 50 +++++++++-
 .../safer_picture_downloading.rb              | 99 ++++++++++++++++++-
 3 files changed, 196 insertions(+), 3 deletions(-)

diff --git a/ch11-reading-and-writing/build_a_better_playlist.rb b/ch11-reading-and-writing/build_a_better_playlist.rb
index 3b31bd241..b3538aef9 100644
--- a/ch11-reading-and-writing/build_a_better_playlist.rb
+++ b/ch11-reading-and-writing/build_a_better_playlist.rb
@@ -1,3 +1,51 @@
 def music_shuffle filenames
-  # your code here
+    # We don't want a perfectly random shuffle, so let's
+    # instead do a shuffle like card-shuffling. Let's
+    # shuffle the "deck" twice, then cut it once. That's
+    # not enough times to make a perfect shuffle, but it
+    # does mix things up a bit.
+    # Before we do anything, let's actually *sort* the
+    # input, since we don't know how shuffled it might
+    # already be, and we don't want it to be *too* random.
+    filenames = filenames.sort
+    len = filenames.length
+
+    # Now we shuffle twice.
+    2.times do
+      l_idx = 0 # index of next card in left pile
+      r_idx = len/2 # index of next card in right pile
+      shuf = []
+      # NOTE: If we have an odd number of "cards",
+      # then the right pile will be larger.
+
+      while shuf.length < len
+        if shuf.length%2 == 0
+          # take card from right pile
+          shuf.push(filenames[r_idx])
+          r_idx = r_idx + 1
+        else
+          # take card from left pile
+          shuf.push(filenames[l_idx])
+          l_idx = l_idx + 1
+        end
+      end
+
+      filenames = shuf
+    end
+    # And cut the deck.
+    arr = []
+    cut = rand(len) # index of card to cut at
+    idx = 0
+
+    while idx < len
+      arr.push(filenames[(idx+cut)%len])
+      idx = idx + 1
+    end
+
+    arr
+  end
+  # songs = ['aa/bbb', 'aa/ccc', 'aa/ddd',
+  #          'AAA/xxxx', 'AAA/yyyy', 'AAA/zzzz', 'foo/bar']
+  # puts(music_shuffle(songs))
+
 end
diff --git a/ch11-reading-and-writing/build_your_own_playlist.rb b/ch11-reading-and-writing/build_your_own_playlist.rb
index 801de24bd..14ec08946 100644
--- a/ch11-reading-and-writing/build_your_own_playlist.rb
+++ b/ch11-reading-and-writing/build_your_own_playlist.rb
@@ -1 +1,49 @@
-# your code here
\ No newline at end of file
+def music_shuffle filenames
+
+    filenames = filenames.sort
+    len = filenames.length
+
+    # Now we shuffle twice.
+    2.times do
+      l_idx = 0 # index of next card in left pile
+      r_idx = len/2 # index of next card in right pile
+      shuf = []
+      # NOTE: If we have an odd number of "cards",
+      # then the right pile will be larger.
+
+      while shuf.length < len
+        if shuf.length%2 == 0
+          # take card from right pile
+          shuf.push(filenames[r_idx])
+          r_idx = r_idx + 1
+        else
+          # take card from left pile
+          shuf.push(filenames[l_idx])
+          l_idx = l_idx + 1
+        end
+      end
+
+      filenames = shuf
+    end
+    # And cut the deck.
+    arr = []
+    cut = rand(len) # index of card to cut at
+    idx = 0
+
+    while idx < len
+      arr.push(filenames[(idx+cut)%len])
+      idx = idx + 1
+    end
+
+    arr
+  end
+
+all_oggs = shuffle(Dir['**/*.ogg'])
+
+File.open 'playlist.m3u', 'w' do |f|
+  all_oggs.each do |ogg|
+    f.write ogg+"\n"
+  end
+end
+
+puts 'Done!'
diff --git a/ch11-reading-and-writing/safer_picture_downloading.rb b/ch11-reading-and-writing/safer_picture_downloading.rb
index 801de24bd..ddebd5379 100644
--- a/ch11-reading-and-writing/safer_picture_downloading.rb
+++ b/ch11-reading-and-writing/safer_picture_downloading.rb
@@ -1 +1,98 @@
-# your code here
\ No newline at end of file
+# For Katy, with love.
+
+### Download pictures from camera card.
+
+require 'win32ole'
+
+STDOUT.sync = true
+Thread.abort_on_exception = true
+
+Dir.chdir 'C:\Documents and Settings\Chris\Desktop\pictureinbox'
+
+# Always look here for pics.
+
+pic_names = Dir['!undated/**/*.{jpg,avi}']
+thm_names = Dir['!undated/**/*.{thm}' ]
+
+# Scan for memory cards in the card reader.
+WIN32OLE.new("Scripting.FileSystemObject").Drives.each() do |x|
+  #driveType 1 is removable disk
+  if x.DriveType == 1 && x.IsReady
+    pic_names += Dir[x.DriveLetter+':/**/*.{jpg,avi}']
+    thm_names += Dir[x.DriveLetter+':/**/*.{thm}' ]
+  end
+end
+
+months = %w(jan feb mar apr may jun jul aug sep oct nov dec)
+
+encountered_error = false
+
+print "Downloading #{pic_names.size} files: "
+
+pic_names.each do |name|
+  print '.'
+  is_movie = (name[-3..-1].downcase == 'avi')
+
+  if is_movie
+    orientation = 0
+    new_name = File.open(name) do |f|
+      f.seek(0x144,IO::SEEK_SET)
+      f.read(20)
+    end
+
+    new_name[0...3] = '%.2d' % (1 + months.index(new_name[0...3].downcase))
+    new_name = new_name[-4..-1] + ' ' + new_name[0...-5]
+  else
+    new_name, orientation = File.open(name) do |f|
+      f.seek(0x36, IO::SEEK_SET)
+      orientation_ = f.read(1)[0]
+      f.seek(0xbc, IO::SEEK_SET)
+      new_name_ = f.read(19)
+      [new_name_, orientation_]
+    end
+  end
+
+  [4,7,10,13,16].each {|n| new_name[n] = '.'}
+  if new_name[0] != '2'[0]
+    encountered_error = true
+    puts "\n"+'ERROR: Could not process "'+name+
+      '" because it\'s not in the proper format!'
+    next
+  end
+
+  save_name = new_name + (is_movie ? '.orig.avi' : '.jpg')
+  # Make sure we don't save over another file!!
+  while FileTest.exist? save_name
+    new_name += 'a'
+    save_name = new_name + (is_movie ? '.orig.avi' : '.jpg')
+  end
+
+
+  case orientation
+  when 6
+    `convert "#{name}" -rotate "90>" "#{save_name}"`
+    File.delete name
+  when 8
+    `convert "#{name}" -rotate "-90>" "#{save_name}"`
+    File.delete name
+  else
+    File.rename name, save_name
+  end
+end
+
+print "\nDeleting #{thm_names.size} THM files: "
+thm_names.each do |name|
+  print '.'
+  File.delete name
+end
+
+# If something bad happened, make sure she
+
+# sees the error message before the window closes.
+
+if encountered_error
+  puts
+  puts "Press [Enter] to finish."
+  puts
+  gets
+end

From b303cac412cc4d321dca24ae97abf3903ee83898 Mon Sep 17 00:00:00 2001
From: stuartcooper <stucooper86@gmail.com>
Date: Wed, 7 Sep 2016 17:31:18 +0100
Subject: [PATCH 5/7] Adding Ch12

---
 .../birthday_helper.rb                        | 28 +++++++++++++++-
 ch12-new-classes-of-objects/happy_birthday.rb | 24 +++++++++++++-
 .../one_billion_seconds.rb                    |  2 +-
 ...party_like_its_roman_to_integer_mcmxcix.rb | 33 +++++++++++++++++--
 4 files changed, 82 insertions(+), 5 deletions(-)

diff --git a/ch12-new-classes-of-objects/birthday_helper.rb b/ch12-new-classes-of-objects/birthday_helper.rb
index 801de24bd..90b852e66 100644
--- a/ch12-new-classes-of-objects/birthday_helper.rb
+++ b/ch12-new-classes-of-objects/birthday_helper.rb
@@ -1 +1,27 @@
-# your code here
\ No newline at end of file
+# First, load in the birthdates.
+birth_dates = {}
+File.read('birthdates.txt').each_line do |line|
+  line = line.chomp
+  # Find the index of first comma,
+  # so we know where the name ends.
+  first_comma = 0
+  while line[first_comma] != ',' &&
+      first_comma < line.length
+    first_comma = first_comma + 1
+  end
+
+  name = line[0..(first_comma - 1)]
+  date = line[-12..-1]
+  birth_dates[name] = date
+end
+
+# Now ask the user which one they want to know.
+puts 'Whose birthday would you like to know?'
+name = gets.chomp
+date = birth_dates[name]
+
+if date == nil
+  puts "Oooh, I don't know that one..."
+else
+  puts date[0..5]
+end
diff --git a/ch12-new-classes-of-objects/happy_birthday.rb b/ch12-new-classes-of-objects/happy_birthday.rb
index 801de24bd..a1bfe557e 100644
--- a/ch12-new-classes-of-objects/happy_birthday.rb
+++ b/ch12-new-classes-of-objects/happy_birthday.rb
@@ -1 +1,23 @@
-# your code here
\ No newline at end of file
+#Ask what year the person was born in
+puts "What year were you born in?"
+year = gets.chomp.to_i
+#Ask what month
+puts "What month were you born in?"
+month = gets.chomp.to_i
+#Ask what date
+puts "What date of month were you born on?"
+date = gets.chomp.to_i
+
+born = Time.local(year, month, date)
+today = Time.new
+
+puts "So you were born on the #{born}?"
+
+age = 1
+
+puts "Have a SPANK for each year you've been alive!"
+
+while Time.local(year + age, month, date) <= today
+puts 'SPANK!'
+age = age + 1
+end
diff --git a/ch12-new-classes-of-objects/one_billion_seconds.rb b/ch12-new-classes-of-objects/one_billion_seconds.rb
index 801de24bd..1116f3722 100644
--- a/ch12-new-classes-of-objects/one_billion_seconds.rb
+++ b/ch12-new-classes-of-objects/one_billion_seconds.rb
@@ -1 +1 @@
-# your code here
\ No newline at end of file
+puts(Time.gm(1986, 3, 1, 11, 00) + 10**9)
diff --git a/ch12-new-classes-of-objects/party_like_its_roman_to_integer_mcmxcix.rb b/ch12-new-classes-of-objects/party_like_its_roman_to_integer_mcmxcix.rb
index 037b6cb09..314c6c478 100644
--- a/ch12-new-classes-of-objects/party_like_its_roman_to_integer_mcmxcix.rb
+++ b/ch12-new-classes-of-objects/party_like_its_roman_to_integer_mcmxcix.rb
@@ -1,3 +1,32 @@
 def roman_to_integer roman
-  # your code here
-end
\ No newline at end of file
+    digit_vals = {'i' => 1,
+                  'v' => 5,
+                  'x' => 10,
+                  'l' => 50,
+                  'c' => 100,
+                  'd' => 500,
+                  'm' => 1000}
+    total = 0
+    prev = 0
+    index = roman.length - 1
+    while index >= 0
+      c = roman[index].downcase
+      index = index - 1
+      val = digit_vals[c]
+      if !val
+        puts 'This is not a valid roman numeral!'
+        return
+      end
+
+      if val < prev
+        val = val * -1
+      else
+        prev = val
+      end
+      total = total + val
+    end
+
+    total
+end
+
+puts(roman_to_integer('mcmxcix'))

From 9b6d8a18de5a5e307bc4c908a0d0811140fa3c77 Mon Sep 17 00:00:00 2001
From: stuartcooper <stucooper86@gmail.com>
Date: Thu, 8 Sep 2016 17:30:37 +0100
Subject: [PATCH 6/7] Adding Ch13

---
 .../extend_built_in_classes.rb                |  58 +++++++-
 .../interactive_baby_dragon.rb                | 127 +++++++++++++++++-
 ch13-creating-new-classes/orange_tree.rb      |  73 +++++++++-
 3 files changed, 254 insertions(+), 4 deletions(-)

diff --git a/ch13-creating-new-classes/extend_built_in_classes.rb b/ch13-creating-new-classes/extend_built_in_classes.rb
index c3e793933..415e971af 100644
--- a/ch13-creating-new-classes/extend_built_in_classes.rb
+++ b/ch13-creating-new-classes/extend_built_in_classes.rb
@@ -1,3 +1,57 @@
+=begin
+class Array
+  def shuffle
+    arr = self
+
+    shuf = []
+  #shuffle an array of any size above zero
+    while arr.length > 0
+      rand_index = rand(arr.length)
+  #iterate each item placing all bar the random one in the new array which goes into shuf
+      curr_index = 0
+      new_arr = []
+
+      arr.each do |item|
+        if curr_index == rand_index
+          shuf.push item
+        else
+          new_arr.push item
+        end
+
+        curr_index = curr_index + 1
+      end
+        #call back new array instead of original array
+        arr = new_arr
+      end
+
+    shuf
+  end
+=end
+
 class Integer
-  # your code here
-end
\ No newline at end of file
+  def factorial
+    if self <=1
+      1
+    else
+      self * (self-1).factorial
+    end
+  end
+
+  def to_roman
+    roman = ''
+
+    roman = roman + 'M' * (self / 1000)
+    roman = roman + 'D' * (self % 1000/ 500)
+    roman = roman + 'C' * (self % 500 / 100)
+    roman = roman + 'L' * (self % 100 / 50)
+    roman = roman + 'X' * (self % 50 / 10)
+    roman = roman + 'V' * (self % 10 / 5)
+    roman = roman + 'I' * (self % 5 / 1)
+
+    roman
+  end
+end
+
+puts [1, 2, 3, 4, 5].shuffle
+puts 7.factorial
+puts 112.to_roman
diff --git a/ch13-creating-new-classes/interactive_baby_dragon.rb b/ch13-creating-new-classes/interactive_baby_dragon.rb
index 801de24bd..a3114ab15 100644
--- a/ch13-creating-new-classes/interactive_baby_dragon.rb
+++ b/ch13-creating-new-classes/interactive_baby_dragon.rb
@@ -1 +1,126 @@
-# your code here
\ No newline at end of file
+class Dragon
+  def initialize name
+    @name = name
+    @asleep = false
+    @stuff_in_belly = 10 # 10 = full
+    @stuff_in_intestine = 0 # No need to go
+
+    puts "#{@name} is born"
+  end
+
+  def feed
+    puts "You feed #{@name}."
+    @stuff_in_belly = 10
+    passage_of_time
+  end
+
+  def walk
+    puts "You walk #{@name}"
+    @stuff_in_intestine = 0
+    passage_of_time
+  end
+
+  def put_to_bed
+    puts "You put #{@name} to bed."
+    @asleep = true
+    3.times do
+      if @asleep
+        passage_of_time
+      end
+      if @asleep
+        puts "#{@name} snores, filling the room with smoke."
+      end
+    end
+    if @asleep = false
+      puts "#{@name} wakes up slowly."
+    end
+  end
+
+  def toss
+    puts "You toss #{@name} up into the air."
+    puts 'They giggle and singe your eyebrows.'
+    passage_of_time
+  end
+  def rock
+    puts "You rock #{@name} gently."
+    @asleep = true
+    puts 'They briefly doze off...'
+    passage_of_time
+    if @asleep = false
+      puts '...but wakes when you stop'
+    end
+  end
+
+  private
+  #Private means that the methods defined here are methods
+  #internal to the object. (You can feed the dragon but
+  #cannot ask if they are hungry.)
+  def hungry?
+    #Method names can end with ?, but this usually only for true/false returns
+    @stuff_in_belly <= 2
+  end
+
+  def poopy?
+    @stuff_in_intestine >= 8
+  end
+
+  def passage_of_time
+    if @stuff_in_belly > 0
+      @stuff_in_belly = @stuff_in_belly - 1
+      @stuff_in_intestine = @stuff_in_intestine + 1
+    else
+      if @asleep
+        @asleep = false
+        puts 'They wake up suddenly'
+      end
+      puts "#{@name} is starving! In desperation they ate YOU!"
+  exit
+  end
+
+  if @stuff_in_intestine >= 10
+    @stuff_in_intestine = 0
+    puts "Whoops #{@name} had an accident..."
+  end
+
+  if hungry?
+    if @asleep = false
+      puts 'They wake up suddenly!'
+    end
+    puts "#{@name}'s stomach grumbles..."
+  end
+
+  if poopy?
+    if @asleep
+      @asleep = false
+      puts "They wake up suddenly!"
+    end
+    puts "#{@name} does the potty dance..."
+  end
+end
+end
+
+puts "What is the name of your dragon?"
+name = gets.chomp
+dragon = Dragon.new name
+
+while true
+  puts
+  puts 'Please choose a command for your dragon: feed, toss, walk, rock, put to bed, exit'
+    command = gets.chomp
+
+    if command == 'exit'
+      exit
+    elsif command == 'feed'
+      dragon.feed
+    elsif command == 'toss'
+      dragon.toss
+    elsif command == 'walk'
+      dragon.walk
+    elsif command == 'rock'
+      dragon.rock
+    elsif command == 'put to bed'
+      dragon.put_to_bed
+    else
+      puts 'Command your dragon!'
+    end
+  end
diff --git a/ch13-creating-new-classes/orange_tree.rb b/ch13-creating-new-classes/orange_tree.rb
index 025d08907..9c0024ab3 100644
--- a/ch13-creating-new-classes/orange_tree.rb
+++ b/ch13-creating-new-classes/orange_tree.rb
@@ -7,5 +7,76 @@
 
 
 class OrangeTree
-  # your code here
+  def initialize
+    @height = 0
+    @count_the_oranges = 0
+    @alive = true
+  end
+
+  def height
+    if @alive
+      @height.round(1)
+    else
+      'A dead tree is not very tall. :('
+    end
+  end
+
+  def count_the_oranges
+    if @alive
+      @count_the_oranges
+    else
+      'A dead tree has no oranges :('
+    end
+  end
+
+  def one_year_passes
+    if @alive
+      @height = @height + 0.4
+      @count_the_oranges = 0
+      if @height > 10 && rand(2) > 0
+        @alive = false
+        'Oh no! The tree is too old, and has died. :('
+      elsif @height > 2
+        @count_the_oranges = (@height * 15 - 25).to_i
+        "This year your tree grew to #{@height.round(1)}m tall," +
+        " and produced #{@count_the_oranges} oranges"
+      else
+        "This year your tree grew to #{@height.round(1)}m tall," +
+        " but is still too young to bear fruit."
+      end
+    else
+      "A year later, the tree is still dead :("
+    end
+  end
+
+  def pick_an_orange
+    if @alive
+      if @count_the_oranges > 0
+        'You pick a juicy, delicious orange!'
+      else
+        'You search every branch, but find no oranges.'
+      end
+    else
+      'A dead tree has nothing to pick. :('
+    end
+  end
 end
+
+ot = OrangeTree.new
+23.times do
+  ot.one_year_passes
+end
+
+
+
+puts(ot.one_year_passes)
+puts(ot.count_the_oranges)
+puts(ot.height)
+puts(ot.one_year_passes)
+puts(ot.one_year_passes)
+puts(ot.one_year_passes)
+puts(ot.one_year_passes)
+puts(ot.one_year_passes)
+puts(ot.height)
+puts(ot.count_the_oranges)
+puts(ot.pick_an_orange)

From 1fc8033df2669d0af3d985652fe8ec161c10919c Mon Sep 17 00:00:00 2001
From: stuartcooper <stucooper86@gmail.com>
Date: Fri, 9 Sep 2016 12:24:06 +0100
Subject: [PATCH 7/7] Adding Ch14

---
 .../better_program_logger.rb                  | 31 +++++++++++++++++--
 .../even_better_profiling.rb                  | 22 +++++++++++--
 ch14-blocks-and-procs/grandfather_clock.rb    | 20 ++++++++++--
 ch14-blocks-and-procs/program_logger.rb       | 18 +++++++++--
 4 files changed, 83 insertions(+), 8 deletions(-)

diff --git a/ch14-blocks-and-procs/better_program_logger.rb b/ch14-blocks-and-procs/better_program_logger.rb
index 0e2e18d57..010bf474d 100644
--- a/ch14-blocks-and-procs/better_program_logger.rb
+++ b/ch14-blocks-and-procs/better_program_logger.rb
@@ -1,3 +1,30 @@
+$logger_depth = 0
+
 def log desc, &block
-  # your code here
-end
\ No newline at end of file
+  prefix = ' '*$logger_depth
+
+  puts prefix + 'Beginning "' + desc + '"...'
+
+  $logger_depth = $logger_depth + 1
+
+  result = block.call
+
+  $logger_depth = $logger_depth - 1
+  puts prefix + '..."' + desc + '" finished, returning: ' + result.to_s
+end
+
+log 'outer block' do
+  log 'some little block' do
+    log 'teeny-tiny block' do
+    'lOtS oF lOvE'.downcase
+end
+
+  7 * 3 * 2
+end
+
+log 'yet another block' do
+  '!doof naidnI ekil I'.reverse
+end
+
+'0' == 0
+end
diff --git a/ch14-blocks-and-procs/even_better_profiling.rb b/ch14-blocks-and-procs/even_better_profiling.rb
index b01b78fd8..b56d9df82 100644
--- a/ch14-blocks-and-procs/even_better_profiling.rb
+++ b/ch14-blocks-and-procs/even_better_profiling.rb
@@ -1,3 +1,21 @@
 def profile block_description, &block
-  # your code here
-end
\ No newline at end of file
+  profile_on = false
+  if profile_on
+  start_time = Time.new
+  block.call
+  duration = Time.new - start_time
+  puts "#{block_description}: #{duration} seconds"
+else
+  block.call
+end
+end
+
+profile '10000 multiplications' do
+  number = 1
+
+  10000.times do
+    number = number * 22
+  end
+
+  puts "#{number.to_s.length} digits"
+end
diff --git a/ch14-blocks-and-procs/grandfather_clock.rb b/ch14-blocks-and-procs/grandfather_clock.rb
index 916f6d354..37c219a2c 100644
--- a/ch14-blocks-and-procs/grandfather_clock.rb
+++ b/ch14-blocks-and-procs/grandfather_clock.rb
@@ -1,3 +1,19 @@
 def grandfather_clock &block
-  # your code here
-end
\ No newline at end of file
+  hour = Time.new.hour
+
+  if hour >= 13
+    hour = hour - 12
+  end
+
+  if hour == 0
+    hour = 12
+  end
+
+  hour.times do
+    block.call
+  end
+end
+
+grandfather_clock do
+  puts "DONG"
+end
diff --git a/ch14-blocks-and-procs/program_logger.rb b/ch14-blocks-and-procs/program_logger.rb
index 0e2e18d57..7f32beddc 100644
--- a/ch14-blocks-and-procs/program_logger.rb
+++ b/ch14-blocks-and-procs/program_logger.rb
@@ -1,3 +1,17 @@
 def log desc, &block
-  # your code here
-end
\ No newline at end of file
+  puts 'Beginning "' + desc + '"...'
+  result = block.call
+  puts '..."' + desc + '" finished, returning: ' + result.to_s
+end
+
+log 'outer block' do
+  log 'some little block' do
+    1**1 + 2**2
+end
+
+log 'yet another block' do
+  '!doof iahT ekil I'.reverse
+end
+
+'0' == 0
+end