diff --git a/test/exercise/arrays/solution.rb b/test/exercise/arrays/solution.rb
index a7d518fc..a0aebbe8 100644
--- a/test/exercise/arrays/solution.rb
+++ b/test/exercise/arrays/solution.rb
@@ -2,11 +2,30 @@ module Exercise
   module Arrays
     class << self
       def replace(array)
-        array
+        m = max array
+        array.map { |e| e > 0 ? m : e }
       end
 
-      def search(_array, _query)
-        0
+      def search(array, query)
+        bin_search array, query, 0, array.length - 1
+      end
+
+      def max array
+        buf = array[0]
+        array.each { |e| buf = e if e > buf }
+        buf
+      end
+
+      def bin_search(array, query, left, right)
+        return -1 unless left <= right
+        i = (left + right) / 2
+        if array[i] == query
+          i
+        elsif array[i] < query
+          bin_search array, query, i + 1, right
+        elsif array[i] > query
+          bin_search array, query, left, i - 1
+        end
       end
     end
   end
diff --git a/test/exercise/arrays/test.rb b/test/exercise/arrays/test.rb
index 7af337a2..1495fbc1 100644
--- a/test/exercise/arrays/test.rb
+++ b/test/exercise/arrays/test.rb
@@ -4,7 +4,6 @@
 class Exercise::ArraysTest < Minitest::Test
   # Заменить все положительные элементы целочисленного массива на максимальное значение элементов массива.
   def test_replace
-    skip
     array = [3, 2, -8, 4, 100, -6, 7, 8, -99]
     new_array = Exercise::Arrays.replace(array)
 
@@ -14,7 +13,6 @@ def test_replace
   # Реализовать бинарный поиск
   # Функция должна возвращать индекс элемента
   def test_bin_search
-    skip
     assert Exercise::Arrays.search([1], 900) == -1
     assert Exercise::Arrays.search([1], 1) == 0
     assert Exercise::Arrays.search([], 900) == -1
diff --git a/test/exercise/fp/solution.rb b/test/exercise/fp/solution.rb
index 91c40040..29a8005e 100644
--- a/test/exercise/fp/solution.rb
+++ b/test/exercise/fp/solution.rb
@@ -4,12 +4,17 @@ class << self
       # Обратиться к параметрам фильма можно так:
       # film["name"], film["rating_kinopoisk"], film["rating_imdb"],
       # film["genres"], film["year"], film["access_level"], film["country"]
-      def rating(_array)
-        0
+      def rating(array)
+        filtered = array.select do |film|
+          !film['country'].nil? &&
+            film['country'].split(',').length >= 2 &&
+            film['rating_kinopoisk'].to_f > 0
+        end
+        filtered.map { |e| e['rating_kinopoisk'].to_f }.reduce(:+) / filtered.length
       end
 
-      def chars_count(_films, _threshold)
-        0
+      def chars_count(films, threshold)
+        films.map { |e| e['rating_kinopoisk'].to_f >= threshold ? e['name'].count('и') : 0 }.reduce :+
       end
     end
   end
diff --git a/test/exercise/fp/test.rb b/test/exercise/fp/test.rb
index cec0f97d..1d98db57 100644
--- a/test/exercise/fp/test.rb
+++ b/test/exercise/fp/test.rb
@@ -7,7 +7,6 @@ class Exercise::FpTest < Minitest::Test
   # Посчитать средний рейтинг фильмов по версии кинопоиска у которых две или больше стран
   # Фильмы у которых рейтиг не задан или равен 0 не учитывать в расчете среднего.
   def test_rating
-    skip
     array = CSV.readlines('./test/fixtures/films.csv', headers: true)
 
     result = Exercise::Fp.rating(array)
@@ -16,7 +15,6 @@ def test_rating
 
   # Посчитать количесвто букв 'и' в названиях всех фильмов с рейтингом кинопоиска больше или равным заданному значению
   def test_chars_count
-    skip
     array = CSV.readlines('./test/fixtures/films.csv', headers: true)
 
     result = Exercise::Fp.chars_count(array, 5)
diff --git a/test/exercise/fp2/solution.rb b/test/exercise/fp2/solution.rb
index ead5e5e5..9a34e027 100644
--- a/test/exercise/fp2/solution.rb
+++ b/test/exercise/fp2/solution.rb
@@ -6,18 +6,29 @@ class MyArray < Array
 
       # Написать свою функцию my_each
       def my_each
+        for e in self
+          yield e
+        end
       end
 
       # Написать свою функцию my_map
       def my_map
+        res = MyArray.new
+        self.my_each { |e| res.push yield(e) }
+        res
       end
 
       # Написать свою функцию my_compact
       def my_compact
+        res = MyArray.new
+        self.my_each { |e| res.push e unless e.nil? }
+        res
       end
 
       # Написать свою функцию my_reduce
-      def my_reduce
+      def my_reduce(acc = nil)
+        self.my_each { |e| acc = acc ? yield(acc, e) : e }
+        acc
       end
     end
   end
diff --git a/test/exercise/fp2/test.rb b/test/exercise/fp2/test.rb
index 1af56b35..645de57d 100644
--- a/test/exercise/fp2/test.rb
+++ b/test/exercise/fp2/test.rb
@@ -11,7 +11,6 @@ def setup
   end
 
   def test_my_each
-    skip
     result = []
     my_result = []
 
@@ -23,14 +22,12 @@ def test_my_each
   end
 
   def test_my_map
-    skip
     func = -> (element) { element * @int }
     assert @array.map(&func) == @my_array.my_map(&func)
     assert @array.map(&func).map(&func) == @my_array.my_map(&func).my_map(&func)
   end
 
   def test_my_compact
-    skip
     func = -> (element) { element if element.even? }
     func_another = -> (element) { element * @int }
     func_yet_another = -> (element) { element.even? }
@@ -40,7 +37,6 @@ def test_my_compact
   end
 
   def test_my_reduce
-    skip
     func = -> (acc, element) { acc * element }
 
     assert @array.reduce(&func) == @my_array.my_reduce(&func)
diff --git a/test/exercise/rackup/inatra.rb b/test/exercise/rackup/inatra.rb
index a04045d9..8c1bd1f4 100644
--- a/test/exercise/rackup/inatra.rb
+++ b/test/exercise/rackup/inatra.rb
@@ -1,9 +1,21 @@
 module Inatra
   class << self
-    def routes
+    def method_missing(method_name, *args, &block)
+      path = args.first.to_s
+      method = method_name.upcase.to_s
+      @routes[path] ||= {}
+      @routes[path][method] = block
+    end
+
+    def routes(&block)
+      @routes ||= {}
+      instance_eval(&block)
     end
 
     def call(env)
+      path = env['PATH_INFO']
+      method = env['REQUEST_METHOD'].upcase.to_s
+      @routes[path][method].call(env)
     end
   end
 end
diff --git a/test/exercise/rackup/test.rb b/test/exercise/rackup/test.rb
index abc99cb4..b36f9b22 100644
--- a/test/exercise/rackup/test.rb
+++ b/test/exercise/rackup/test.rb
@@ -6,11 +6,9 @@
 
 class RackTest < Test::Unit::TestCase
   def test_it_says_hello_world
-    omit do
-      browser = Rack::Test::Session.new(Rack::MockSession.new(Inatra))
-      browser.get '/hello'
-      assert browser.last_response.ok?
-      assert_equal 'Hello World', browser.last_response.body
-    end
+    browser = Rack::Test::Session.new(Rack::MockSession.new(Inatra))
+    browser.get '/hello'
+    assert browser.last_response.ok?
+    assert_equal 'Hello World', browser.last_response.body
   end
 end