Ampers: Zheng Cao

random_menu.rb

@@ -0,0 +1,63 @@
+# Create variables for data storage
+method_array = []
+taste_array = []
+food_array = []
+message_array = []
+number_of_item = 0
+
+# Helper method to create arrays based on user's inputs
+def create_arrays(array)
+  item = gets.chomp.downcase
+  until item == "quit"
+    array << item
+    puts "Please enter another item:"
+    item = gets.chomp.downcase
+  end
+end
+
+# Instruction for data inputs
+puts "Welcome to Random Menu! Let's create your own food database now."
+puts "Please enter some cooking methods. Enter 'quit' when you are done."
+create_arrays(method_array)
+puts "Please enter some descriptors for food. Enter 'quit' when you are done."
+create_arrays(taste_array)
+puts "Please enter some of your favorite food. Enter 'quit' when you are done."
+create_arrays(food_array)
+
+# Pick the max number of items that user can choose
+array_sizes = [method_array.size, taste_array.size, food_array.size]
+max_number_of_item = array_sizes.min
+
+# Ask for number of items from user
+puts "How many items do you want to check out? Pick a number between 0 and #{max_number_of_item}."
+number_of_item = gets.chomp.to_i
+while number_of_item > max_number_of_item
+  puts "Please enter a number between 0 and #{max_number_of_item}."
+  number_of_item = gets.chomp.to_i
+end
+
+# Random number generator
+def random_number(max)
+  r = Random.new
+  index = r.rand(0...max)
+end
+
+# Delete chosen item from arrays
+def delete_current_item(array, index)
+  array.delete_at(index)
+end
+
+# Create output message
+number_of_item.times { |i|
+  index_method = random_number(number_of_item - i)
+  index_taste = random_number(number_of_item - i)
+  index_food = random_number (number_of_item - i)
+  message_array[i] = "#{ i + 1 }. " + method_array[index_method] + " " + taste_array[index_taste] + " " + food_array[index_food]
+  delete_current_item(method_array, index_method)
+  delete_current_item(taste_array, index_taste)
+  delete_current_item(food_array, index_food)
+}
+
+# Display output message
+puts "Here is your list:"
+puts message_array