Lesson1

lesson1.rb

@@ -1,14 +1,37 @@
 require 'date'
 class Lesson1
   def sum(val = 0)
-    # TODO
+    s = 0
+  	val.to_s.split('').each { |a| s += a.to_i }
+  	s
   end
 
   def age(birthday)
-    # TODO
+    def age(birthday)
+    	unless birthday
+      	'Invalid Date Format'
+    	else
+      date = Date.parse(birthday)
+      today = DateTime.now
+      year = today - date
+      days = years * 365
+      hours = days * 24
+      minutes = hours * 60
+      seconds = minuts * 60
+      "Я живу #{years} года или #{years} дней или #{hours}\n 
+      часов или #{minutes} минут или #{seconds} секунд"
+    	end
+  	end
   end
 
   def name
-    # TODO
+    p "First name?"
+    first = gets.chomp
+    p "Second name?"
+    second = gets.chomp
+    p "Third name?"
+    third = gets.chomp
+
+    p "Hello #{first} #{second} #{third}"
   end
-end
+end

my_array.rb

@@ -6,58 +6,90 @@ def initialize(arr = [])
   end
 
   def size
-    # TODO
+    count = 0
+    @array.each { |val| count += 1  }
+    count
   end
 
   def reverse
-    # TODO
+    array_reversed = []
+    @array.each { |val| array_reversed.unshift(val) }
+    array_reversed
   end
 
   def max
-    # TODO
+    @array.sort.last
   end
 
   def min
-    # TODO
+    @array.sort.first
   end
 
-  def desc
-    # TODO
+  def asc
+    @array.sort
   end
 
-  def asc
-    # TODO
+  def desc
+    @array.sort.reverse
   end
 
   def odd
-    # TODO
+    arr = []
+    @array.each do |val|
+      if val % 2 == 1
+        arr.push(val)
+      end
+    end
+    arr
   end
 
   def multiple_to_three
-    # TODO
+    arr = []
+    @array.each do |val|
+      if val % 3 == 0
+        arr.push(val)
+      end
+    end
+    arr 
   end
 
   def uniq
-    # TODO
+    arr = []
+    @array.each { |val| arr << val unless arr.include?(val)}
+    arr
   end
 
-  def devide_on_ten
-    # TODO
+  def devive_on_ten
+    arr = @array.collect { |val| val.to_f / 10 }
+    arr
   end
 
-  def chars
-    # TODO
+  def charsS
+    abc = [*?a..?z]
+    arr = @array.map { |val| abc[val - 1].to_sym }
   end
 
   def switch
-    # TODO
-  end
+    switch_arr = @array
 
-  def before_min
-    # TODO
+    min = switch_arr.min  
+    max = switch_arr.max
+
+    switch_arr[switch_arr.index(max)] = min
+    switch_arr[switch_arr.index(min)] = max
+    switch_arr  
   end
 
   def three_smallest
-    # TODO
+    arr = []
+    min_i = @array.min
+    (0...min_i).each do |val|
+      arr.push(val)
+    end
+    arr 
+  end
+
+  def before_min
+    @array.min(3)
   end
 end