diff --git a/test/exercise/arrays/solution.rb b/test/exercise/arrays/solution.rb
index a7d518fc..a0d34112 100644
--- a/test/exercise/arrays/solution.rb
+++ b/test/exercise/arrays/solution.rb
@@ -2,11 +2,27 @@ module Exercise
   module Arrays
     class << self
       def replace(array)
-        array
+        max = find_max(array)
+        array.map { |el| el.positive? ? max : el }
       end
 
-      def search(_array, _query)
-        0
+      def find_max(array)
+        max = array.first
+        array.each { |el| max = el if el > max }
+        max
+      end
+
+      def search(array, query)
+        binary_search(array, query, 0, array.size)
+      end
+
+      def binary_search(array, query, left, right)
+        mid = (left + right) / 2
+        return mid if array[mid] == query
+        return -1 if left == right
+        return binary_search(array, query, mid + 1, right) if array[mid] < query
+
+        binary_search(array, query, left, mid)
       end
     end
   end
diff --git a/test/exercise/arrays/test.rb b/test/exercise/arrays/test.rb
index 8cd6fb66..4e3e8acf 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 двоичный поиск
   # Функция должна возвращать индекс элемента
   def test_bin_search
-    skip
     assert Exercise::Arrays.search([1], 900) == -1
     assert Exercise::Arrays.search([1], 1).zero?
     assert Exercise::Arrays.search([], 900) == -1