homework

lesson1.rb

@@ -1,14 +1,32 @@
 require 'date'
 class Lesson1
   def sum(val = 0)
-    # TODO
+    # TODO\
+     val.to_s.split('').each { |n| sum += n.to_i}
+     sum
   end
 
-  def age(birthday)
+  def age(bday)
     # TODO
+    d, m, y = bday.to_s.split('/')
+   is_valid = Date.valid_date? y.to_i, m.to_i, d.to_i
+   if is_valid
+     days = (Date.parse(bday) - Date.today).to_i.abs
+     years = days / 365
+     hours = days * 24
+     minutes = hours * 60
+     second = minutes * 60
+      "Я живу #{years} года или #{days} дней или #{hours} часов или #{minutes} минут или #{second} секунд"
+   else
+     'Invalid date format'
+   end
   end
 
   def name
     # TODO
+    name = gets.chomp
+    surname = gets.chomp
+    patronymic_name = gets.chomp
+    "Hello #{surname} #{name} #{patronymic_name}"
   end
 end

my_array.rb

@@ -4,60 +4,77 @@ class MyArray
   def initialize(arr = [])
     @array = arr
   end
-
   def size
-    # TODO
-  end
-
-  def reverse
-    # TODO
-  end
-
-  def max
-    # TODO
-  end
-
-  def min
-    # TODO
-  end
-
-  def desc
-    # TODO
-  end
-
-  def asc
-    # TODO
-  end
-
-  def odd
-    # TODO
-  end
-
-  def multiple_to_three
-    # TODO
-  end
-
-  def uniq
-    # TODO
-  end
-
-  def devide_on_ten
-    # TODO
-  end
-
-  def chars
-    # TODO
-  end
-
-  def switch
-    # TODO
-  end
-
-  def before_min
-    # TODO
-  end
-
-  def three_smallest
-    # TODO
-  end
-end
+     # TODO
+     @array.size
+   end
+   def reverse
+     # TODO
+     @array.reverse
+   end
+   def max
+     # TODO
+     @array.max
+   end
+   def min
+     # TODO
+     @array.min
+   end
+   def desc
+     # TODO
+     @array.sort.reverse
+   end
+   def asc
+     # TODO
+     @array.sort
+   end
+   def odd
+     # TODO
+     @array.select {|x| x % 2 !=0}
+     end
+   end
+   def multiple_to_three
+     # TODO
+     @array.select {|x| x % 3 ==0}
+   end
+   def uniq
+     # TODO
+     @array.uniq
+   end
+   def devide_on_ten
+     # TODO
+     @array.collect {|x| x.to_f / 10}
+   end
+   def chars
+     # TODO
+     arr_abc = ("a".."z").to_a
+     @array.collect {|x| x = arr_abc[x-1]}
+   end
+   def switch
+     # TODO
+     min_val = @array.min
+     min_ind = @array.index(@array.min)
+     max_val = @array.max
+     max_ind = @array.index(@array.max)
+     @array[min_ind] = max_val
+     @array[max_ind] = min_val
+   end
+   def before_min
+     # TODO
+     min_value = [4,2,9,1,3,8].min
+     [4,2,9,1,3,8].map do |x|
+       if x!=min_value
+         x = x
+       else
+         break
+       end
+     end
+   end
+   def three_smallest
+     # TODO
+     arr_1 = @array - @array.min
+     arr_2 = arr_1 - @array.min
+     arr_3 = arr_2 - @array.min
+     return arr_3
+   end
+ end