Week 2: learn_to_program repo

ch09-writing-your-own-methods/ask.rb

@@ -1,3 +1,32 @@
 def ask question
-  # your code here
-end
+  while true
+    puts question
+    reply = gets.chomp.downcase
+    if (reply == 'yes' || reply == 'no')
+      if reply == 'yes'
+        return true
+      else
+        return false
+      end
+      break
+    else
+      puts 'Please answer "yes" or "no".'
+    end
+  end
+end
+
+puts 'Hello and thank you blah blah'
+ask 'Do you like eating tacos?'
+ask 'Do you like eating burritos?'
+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 'DEBRIEFING:'
+puts 'Thank you for...'
+puts
+puts wets_bed

ch09-writing-your-own-methods/old_school_roman_numerals.rb

@@ -1,3 +1,17 @@
 def old_roman_numeral num
-  # your code here
-end
+roman = ""
+roman = roman + "M" * (num / 1000)
+roman = roman + "D" * (num % 1000 / 500)
+roman = roman + "C" * (num % 500/ 100)
+roman = roman + "L" * (num % 100 / 50)
+roman = roman + "X" * (num % 50 / 10)
+roman = roman + "V" * (num % 10 / 5)
+roman = roman + "I" * (num % 5 )
+roman
+end
+
+puts old_roman_numeral 17
+puts old_roman_numeral 1567
+puts old_roman_numeral 222
+puts old_roman_numeral 865
+puts old_roman_numeral 4000

ch09-writing-your-own-methods/roman_numerals.rb

@@ -1,3 +1,52 @@
 def roman_numeral num
-  # your code here
-end
+  thousands_to_convert = (num / 1000)
+  hundreds_to_convert = (num % 1000 / 100)
+  tens_to_convert = (num % 100 / 10)
+  units_to_convert = num % 10
+
+if thousands_to_convert <= 3
+  converted_thous = "M" * thousands_to_convert
+end
+
+if hundreds_to_convert <= 3
+  converted_huns = "C" * hundreds_to_convert
+elsif hundreds_to_convert == 4
+  converted_huns = 'C' + 'D'
+elsif hundreds_to_convert == 5
+  converted_huns = 'D'
+elsif hundreds_to_convert > 5 && hundreds_to_convert < 9
+  converted_huns = 'D' + "C" * (hundreds_to_convert - 5)
+elsif hundreds_to_convert == 9
+  converted_huns = 'C' + "M"
+end
+
+if tens_to_convert <= 3
+  converted_tens = "X" * tens_to_convert
+elsif tens_to_convert == 4
+  converted_tens = 'X' + 'L'
+elsif tens_to_convert == 5
+  converted_tens = 'L'
+elsif tens_to_convert > 5 && tens_to_convert < 9
+  converted_tens = 'L' + "X" * (tens_to_convert - 5)
+elsif tens_to_convert == 9
+  converted_tens = 'X' + "C"
+end
+
+if units_to_convert <= 3
+  converted_units = "I" * units_to_convert
+elsif units_to_convert == 4
+  converted_units = 'I' + 'V'
+elsif units_to_convert == 5
+  converted_units = 'V'
+elsif units_to_convert > 5 && units_to_convert < 9
+  converted_units = 'V' + "I" * (units_to_convert - 5)
+elsif units_to_convert == 9
+  converted_units = 'I' + "X"
+end
+
+converted_num = converted_thous + converted_huns + converted_tens + converted_units
+puts converted_num
+converted_num
+end
+roman_numeral 119
+roman_numeral 101

ch10-nothing-new/dictionary_sort.rb

@@ -1,3 +1,34 @@
-def dictionary_sort arr
-  # your code here
-end
+def dictionary_sort some_array
+recursive_sort some_array, []
+end
+
+def recursive_sort unsorted_array, sorted_array
+final_array = []
+sorting_hash = Hash.new 0
+lookup_value = 0
+sorting_array = []
+unsorted_array.each do |x|
+  sorting_hash[x.downcase] = x
+end
+unsorted_array.each do |x|
+  sorting_array.push(x.downcase)
+end
+while sorting_array.length > 0
+  smallest_word = sorting_array.pop
+  sorting_array.each do |x|
+    if x == smallest_word
+      sorted_array.push(x)
+    elsif x < smallest_word
+      sorting_array.push(smallest_word)
+      smallest_word = x
+    end
+  end
+    sorting_array.delete(smallest_word)
+    sorted_array.push(smallest_word)
+  end
+sorted_array.each do |x|
+  final_array.push(sorting_hash[x])
+end
+puts final_array
+return final_array
+end

ch10-nothing-new/english_number.rb

@@ -1,3 +1,73 @@
 def english_number number
-  # your code here
+  if number < 0
+    return 'Please enter a numer that isnt negative'
+  end
+  if number == 0
+    return 'zero'
+  end
+  num_string = ''
+  ones_place = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten']
+  tens_place = ['ten', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety']
+  teenagers = ['eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen']
+  left = number
+
+  write = left / 1000000000
+  left = left - write*1000000000
+  if write > 0
+    billions = english_number write
+    num_string = num_string + billions + ' billion'
+    if left > 0
+      num_string = num_string + ' '
+    end
+  end
+
+  write = left / 1000000
+  left = left - write*1000000
+  if write > 0
+    millions = english_number write
+    num_string = num_string + millions + ' million'
+    if left > 0
+      num_string = num_string + ' '
+    end
+  end
+
+  write = left / 1000
+  left = left - write*1000
+  if write > 0
+    thousands = english_number write
+    num_string = num_string + thousands + ' thousand'
+    if left > 0
+      num_string = num_string + ' '
+    end
+  end
+  write = left / 100
+  left = left - write*100
+  if write > 0
+    hundreds = english_number write
+  num_string = num_string + hundreds + ' hundred'
+  if left > 0
+    num_string = num_string + ' '
+  end
 end
+write = left / 10
+left = left - write*10
+if write > 0
+  if ((write == 1) and (left >0))
+    num_string = num_string + teenagers[left-1]
+    left = 0
+  else
+    num_string = num_string + tens_place[write-1]
+  end
+  if left > 0
+  num_string = num_string + '-'
+end
+end
+write = left
+left = 0
+if write > 0
+  num_string = num_string + ones_place[write-1]
+end
+num_string
+end
+
+puts english_number 5436000000

ch10-nothing-new/ninety_nine_bottles_of_beer.rb

@@ -1 +1,98 @@
-# your code here
+def english_number number
+  if number < 0
+    return 'Please enter a numer that isnt negative'
+  end
+  if number == 0
+    return 'zero'
+  end
+  num_string = ''
+  ones_place = ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten']
+  tens_place = ['ten', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety']
+  teenagers = ['eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen']
+  left = number
+
+  write = left / 1000000000
+  left = left - write*1000000000
+  if write > 0
+    billions = english_number write
+    num_string = num_string + billions + ' billion'
+    if left > 0
+      num_string = num_string + ' '
+    end
+  end
+
+  write = left / 1000000
+  left = left - write*1000000
+  if write > 0
+    millions = english_number write
+    num_string = num_string + millions + ' million'
+    if left > 0
+      num_string = num_string + ' '
+    end
+  end
+
+  write = left / 1000
+  left = left - write*1000
+  if write > 0
+    thousands = english_number write
+    num_string = num_string + thousands + ' thousand'
+    if left > 0
+      num_string = num_string + ' '
+    end
+  end
+  write = left / 100
+  left = left - write*100
+  if write > 0
+    hundreds = english_number write
+  num_string = num_string + hundreds + ' hundred'
+  if left > 0
+    num_string = num_string + ' and '
+  end
+end
+write = left / 10
+left = left - write*10
+if write > 0
+  if ((write == 1) and (left >0))
+    num_string = num_string + teenagers[left-1]
+    left = 0
+  else
+    num_string = num_string + tens_place[write-1]
+  end
+  if left > 0
+  num_string = num_string + '-'
+end
+end
+write = left
+left = 0
+if write > 0
+  num_string = num_string + ones_place[write-1]
+end
+num_string
+end
+
+def ninety_nine_bottles start_num
+
+
+  while  start_num > 0
+    start_num_english = english_number start_num
+    start_num_caps = start_num_english.capitalize
+    next_num = start_num - 1
+    next_num_english = english_number next_num
+
+    if start_num == 1
+      puts "#{start_num_caps} bottle of beer on the wall, #{start_num_english}"
+      puts "bottle of beer. Take one down, pass it around, #{next_num_english}"
+      puts "bottles of beer on the wall."
+      puts
+    else
+      puts "#{start_num_caps} bottles of beer on the wall, #{start_num_english}"
+      puts "bottles of beer. Take it down, pass it around, #{next_num_english}"
+      puts "bottles of beer on the wall."
+      puts
+    end
+start_num = start_num - 1
+next_num = next_num - 1
+end
+end
+
+ninety_nine_bottles 10

ch10-nothing-new/shuffle.rb

@@ -1,3 +1,12 @@
 def shuffle arr
-  # your code here
-end
+  shuffled_arr = []
+  while arr.length > 0
+  shuffle_entry = rand(arr.length)
+  entry_to_push = arr[shuffle_entry]
+  shuffled_arr.push(entry_to_push)
+  arr.delete_at(shuffle_entry)
+end
+arr = shuffled_arr
+puts arr
+arr
+end

ch10-nothing-new/sort.rb

@@ -1,3 +1,25 @@
-def sort arr
-  # your code here
-end
+def sort some_array
+recursive_sort some_array, []
+end
+
+def recursive_sort unsorted_array, sorted_array
+
+if unsorted_array.length <= 0
+  return sorted_array
+  puts sorted_array
+end
+smallest_word = unsorted_array.pop
+still_unsorted = []
+unsorted_array.each do |x|
+  if x < smallest_word
+    still_unsorted.push(smallest_word)
+    smallest_word = x
+  else
+    still_unsorted.push(x)
+  end
+end
+sorted_array.push(smallest_word)
+recursive_sort still_unsorted, sorted_array
+end
+
+puts (sort(["fucking", "hell", "bollocks"]))